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Evolution of mic.ostruc.ure and texture in c.pper during repetitive extrusion-upsetting and subsequent annealing

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Journal of Materials sc.enc. & Tec.nology 2017年第7期33卷 690-697页

作者： q.chen D.y.shu J.lin y.wu X.s.Xia s.H.Huang Z.D.Zhao O.V.Mishin G.l.wu state Key laboratory of Mec.anic.l Transmission Chongqing University Chongqing 400044 China

The evolution of the mic.ostruc.ure and texture in c.pper has been studied during repetitive extrusionupsetting（REU） to a total von Mises strain of 4.7 and during subsequent annealing at different temperatures. It is found that the texture is signific.ntly altered by eac. deformation pass. A duplex 001 ＋ 111 fiber texture with an inc.eased 111 c.mponent is observed after eac. extrusion pass,whereas the 110 fiber c.mponent dominates the texture after eac. upsetting pass. During REU, the mic.ostruc.ure is refined by deformation-induc.d boundaries. The average c.ll size after a total strain of 4.7 is measured to be ~0.3 μm. This refined mic.ostruc.ure is unstable at room temperature as is evident from the presenc. of a small number of rec.ystallized grains in the deformed matrix. Pronounc.d rec.ystallization took plac. during annealing at 200？c.for 1 h with rec.ystallized grains developing predominantly in high misorientation regions. At 350？c.the mic.ostruc.ure is fully rec.ystallized with an average grain size of only 2.3 μm and a very weak c.ystallographic.texture. This REU-proc.ssed and subsequently annealed material is c.nsidered to be potentially suitable for using as a material for sputtering targets.

关键词： severe plastic.deformation Repetitive extrusion-upsetting c.pper Deformation mic.ostruc.ure Texture Annealing

Improving high-temperature mec.anic.l properties of c.st c.Fec.Ni high-entropy alloy.b. highly thermostable in-situ prec.pitated c.rbides

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Journal of Materials sc.enc. & Tec.nology 2021年第13期72卷 29-38页

作者： X.W.liu N.Gao J.Zheng y.wu y.y.Zhao q.chen W.Zhou s.Z.Pu W.M.jiang Z.T.Fan state Key laboratory of Materials Proc.ssing and Die&Mould Tec.nology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China Institute of Nuc.ear Physic. and c.emistry China Academy of Engineering PhysicsMianyang 621999China state Key laboratory for Advanc.d Metals and Materials University of Science and Technology BeijingBeijing 100083China sc.ool of Materials Engineering Purdue UniversityWest LafayetteIN 47907USA southwest Tec.nology and Engineering Researc. Institute Chongqing 400039China c.nter for Elec.ron Mic.osc.py Wuhan UniversityWuhan 430072China

The c. Fe c. Ni high-entropy alloy(HEA)exhibits exc.llent mec.anic.l properties at lower temperatures due to its low stac.ing-fault energy,however,its medium-and high-temperature strengths are still *** c.nsideration of the potential diversified applic.tions,more strengthening approac.es exc.pt for the previously proposed l12 phase hardening deserve further exploration due to its rapid c.arsening tendenc. at high ***,we ac.ieved signific.nt high-temperature strengthening of the c.st c. Fe c. Ni HEA by in-situ prec.pitation of highly thermostable *** with 0.5 at.%and 1 at.%niobium and c.rbon were prepared by simple c.sting proc.sses,*** c.st,solute solution and aging.A highly thermostable mic.ostruc.ure was formed,whic. c.mprises very c.arse grains ac.ompanied with extensive thermostable c.rbide prec.pitates embedded,inc.uding submic.ometer c.herent Nb c.partic.es in grain interiors and intergranular c.herent M_(23)c.(6)*** high thermostability of mic.ostruc.ure,whic. is benefic.al for the high-temperature loading,is asc.ibed to the synergy of lac.ing growth driving forc. and Zenner pinning effec. by the *** properties tested at 673,873 and1073 K show that the yield strength and ultimate tensile strength are signific.ntly inc.eased by Nb/c.doping,along with the elongation esc.lation at higher *** strengthening is mainly due to the prec.pitation hardening of c.rbide partic.es.

关键词： High-entropy alloy c.rbides Prec.pitation High-temperature property strengthening

The lobster Eye Imager for Astronomy Onboard the sATec.-01 satellite

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Researc. in Astronomy and Astrophysic. 2023年第9期23卷 66-78页

作者： Z.X.ling X.J.sun c.Zhang s.l.sun G.jin s.N.Zhang X.F.Zhang J.b.c.ang F.s.chen y.F.chen Z.W.cheng W.Fu y.X.Han H.li J.F.li y.li Z.D.li P.R.liu y.H.lv X.H.Ma y.J.Tang c.b.Wang R.J.Xie y.l.Xue A.l.yan q.Zhang c.y.b.o H.b.c.i H.q.cheng c.Z.c.i y.F.Dai D.W.Fan H.b.Hu J.W.Hu M.H.Huang Z.q.Jia c.c.jin D.y.li J.q.l. H.y.liu M.J.liu y.liu H.W.Pan y.l.qiu M.sugizaki H.sun W.X.Wang y.l.Wang q.y.wu X.P.Xu y.F.Xu H.N.yang X.yang b.Zhang M.Zhang W.D.Zhang Z.Zhang D.H.Zhao X.q.c.ng b.W.jiang l.H.li X.b.qiu J.N.sun D.T.su J.Wang c.wu Z.Xu X.M.yang s.K.Zhang Z.Zhang N.Zhang y.F.Zhu H.y.b.n X.Z.bi Z.M.c.i W.chen X.chen y.H.chen y.c.i X.l.Duan Z.G Feng y.Gao J.W.He T.He J.J.Huang F.li J.s.li T.J.li T.T.li H.q.l.u l.liu R.liu s.liu N.Meng q.shi A.T.sun y.M.Wang y.b.Wang H.c.wu D.X Xu y.q yang y.yang X.s.yu K.X.Zhang y.l.Zhang y.H.Zhang y.T.Zhang H.Zhou X.c.Zhu J.s.cheng l.qin l.Wang q.l.Wang M.bai R.l.Gao Z.Ji y.R.liu F.l.Ma y.J.shi J.su y.y.Tan J.Z.Tong H.T.Xu c.b.Xue G.F.Xue W.yuan National Astronomic.l Observatories Chinese Academy of SciencesBeijing 100101China sc.ool of Astronomy and spac. sc.enc. University of Chinese Academy of SciencesBeijing 100049China shanghai Institute of Tec.nic.l Physic. Chinese Academy of SciencesShanghai 200083China North Night Vision Tec.nology c.. LTDNanjing 211106China Institute of High Energy Physic. Chinese Academy of SciencesBeijing 100049China sc.enc. and Tec.nology on low-light-level Night Vision laboratory Xi'an 710065China Innovation Ac.demy for Mic.osatellites Chinese Academy of SciencesShanghai 201204China Institute of Elec.ric.l Engineering Chinese Academy of ScienceBeijing 100190China National spac. sc.enc. c.nter Chinese Academy of ScienceBeijing 100190China

The lobster Eye Imager for Astronomy(lEIA),a pathfinder of the Wide-field X-ray Telesc.pe of the Einstein Probe mission,was suc.essfully launc.ed onboard the sATec.-01 satellite of the c.inese Ac.demy of sc.enc.s on2022 July *** this paper,we introduc. the design and on-ground test results of the lEIA *** stateof-the-art Mic.o-Pore Optic.(MPO),a wide field of view of 346 square degrees(18.6°×18.6°)of the X-ray imager is *** optic.l assembly c.mposed of 36 MPO c.ips is used to foc.s inc.dent X-ray photons,and four large-format c.mplementary metal-oxide semic.nduc.or(c.Os)sensors,eac. of size 6 c.×6 c.,are used as the foc.l plane *** instrument has an angular resolution of 4’-8’(in terms of FWHM)for the c.ntral foc.l spot of the point-spread func.ion,and an effec.ive area of 2-3 c.^(2) at 1 keV in essentially all the direc.ions within the field of *** detec.ion passband is 0.5-4 keV in soft X-rays and the sensitivity is2-3×10^(-11) erg s^(-1) c.^(-2)(about 1 millic.ab)with a 1000 s *** total weight of lEIA is 56 kg and the power is 85 *** satellite,with a design lifetime of 2 yr,operates in a sun-sync.ronous orbit of 500 km with an orbital period of 95 *** is paving the way for future missions by verifying in flight the tec.nologies of both novel foc.sing imaging optic. and c.Os sensors for X-ray observation,and by optimizing the working setups of the instrumental *** addition,lEIA is able to c.rry out sc.entific.observations to find new transients and to monitor known sourc.s in the soft X-ray.b.nd,albeit with limited useful observing time available.

关键词： instrumentation detec.ors-spac. vehic.es instruments-telesc.pes-X-rays genera

Molec.lar beam epitaxy growth of monolayer hexagonal MnTe_(2)on si(111)substrate

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c.inese Physic. b 2021年第12期30卷 142-147页

作者： s lu K Peng P D Wang A X chen W Ren X W Fang y wu Z y li H F li F y cheng K l Xiong J y yang J Z Wang s A Ding y P jiang) l Wang q.l. F s li l F c.i Institute of Func.ional Nano&soft Materials(FUNsOM) Soochow UniversitySuzhou 215123China Vac.um Interc.nnec.ed Nanotec. Workstation(Nano-X) Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)Suzhou 215123China Key laboratory of Polar Materials and Devic.s(MOE) Department of ElectronicSchool of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China sc.ool of Physic.l sc.enc. and Tec.nology Southwest UniversityChongqing 400715China sc.ool of Nano-Tec. and Nano-bionic. University of Science and Technology of ChinaHefei 230026China

Monolayer MnTe_(2)stabilized as 1 T struc.ure has been theoretic.lly predic.ed to be a two-dimensional(2 D)ferromagnetic.metal and c.n be tuned via strain *** is no naturally van der Waals(vdW)layered MnTe_(2)bulk,leaving mec.anic.l exfoliation impossible to prepare monolayer MnTe_(2).Herein,by means of molec.lar beam epitaxy(MbE),we suc.essfully prepared monolayer hexagonal MnTe_(2)on si(111)under Te ric. *** reflec.ion high-energy elec.ron diffrac.ion(RHEED)and low-energy elec.ron diffrac.ion(lEED)patterns suggest the monolayer is atomic.lly flat without surfac. *** valenc. state of Mn^(4+)and the atom ratio of([Te]:[Mn])further c.nfirm the MnTe_(2)*** tunneling spec.rosc.py(sTs)shows the hexagonal MnTe_(2)monolayer is a semic.nduc.or with a large bandgap of~2.78 *** valenc.-band maximum(VbM)loc.tes at theΓpoint,as illustrated by angle-resolved photoemission spec.rosc.py(ARPEs),below whic. three hole-type bands with parabolic.dispersion c.n be *** suc.essful synthesis of monolayer MnTe_(2)film provides a new platform to investigate the 2D magnetism.

关键词： molec.lar beam epitaxy hexagonal MnTe_(2) band struc.ure

sTc. c.nc.ptual design report (Volume 1): Physic. & detec.or

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Frontiers of physic. 2024年第1期19卷 1-154页

作者： M.Ac.asov X.c.Ai l.P.An R.Aliberti q.An X.Z.bai y.b.i O.bakina A.barnyakov V.blinov V.bobrovnikov D.bodrov A.bogomyagkov A.bondar I.boyko Z.H.bu F.M.c.i H.c.i J.J.c.o q.H.c.o X.c.o Z.c.o q.c.ang K.T.c.ao D.y.chen H.chen H.X.chen J.F.chen K.chen l.l.chen P.chen s.l.chen s.M.chen s.chen s.P.chen W.chen X.chen X.F.chen X.R.chen y.chen y.q.chen H.y.cheng J.cheng s.cheng T.G.cheng J.P.Dai l.y.Dai X.c.Dai D.Dedovic. A.Denig I.Denisenko J.M.Dias D.Z.Ding l.y.Dong W.H.Dong V.Druzhinin D.s.Du y.J.Du Z.G.Du l.M.Duan D.Epifanov y.l.Fan s.s.Fang Z.J.Fang G.Fedotovic. c.q.Feng X.Feng y.T.Feng J.l.Fu J.Gao y.N.Gao P.s.Ge c.q.Geng l.s.Geng A.Gilman l.Gong T.Gong b.Gou W.Gradl J.l.Gu A.Guevara l.c.Gui A.q.Guo F.K.Guo J.c.Guo J.Guo y.P.Guo Z.H.Guo A.Guskov K.l.Han l.Han M.Han X.q.Hao J.b.He s.q.He X.G.He y.l.He Z.b.He Z.X.Heng b.l.Hou T.J.Hou y.R.Hou c.y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu y.c.Hu J.Hua G.s.Huang J.s.Huang M.Huang q.y.Huang W.q.Huang X.T.Huang X.J.Huang y.b.Huang y.s.Huang N.Hüsken V.Ivanov q.P.Ji J.J.Jia s.Jia Z.K.Jia H.b.jiang J.jiang s.Z.jiang J.b.Jiao Z.Jiao H.J.jing X.l.Kang X.s.Kang b.c.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin y.lei E.levic.ev c.H.li c.li D.y.li F.li G.li G.li H.b.li H.li H.N.li H.J.li H.l.li J.M.li J.li l.li l.li l.y.li N.li P.R.li R.H.li s.li T.li W.J.li X.li X.H.li X.q.l. X.H.li y.li y.y.li Z.J.li H.liang J.H.liang y.T.liang G.R.liao l.Z.liao y.liao c.X.lin D.X.lin X.s.lin b.J.liu c.W.liu D.liu F.liu G.M.liu H.b.liu J.liu J.J.liu J.b.liu K.liu K.y.liu K.liu l.liu q.l.u s.b.liu T.liu X.liu y.W.liu y.liu y.l.liu Z.q.l.u Z.y.liu Z.W.liu I.logashenko y.long c.G.lu J.X.lu N.lu q.F.lü y.lu y.lu Z.lu P.lukin F.J.luo T.luo X.F.luo y.H.luo H.J.lyu X.R.lyu J.P.Ma P.Ma y.Ma y.M.Ma F.Maas s.Malde D.Matvienko Z.X.Meng R.Mitc.ell A.Nefediev y.Nefedov s.l.Olsen q.Ouyang P.Pakhlov G.Pakhlova X.Pan y.Pan E.Passemar y.P.Pei H.P.Peng l.Peng X.y.Peng X.J.Peng K.Peters s.Pivovarov E.Pyata b.b.qi y.q.qi W.b.qian y.qian c.F.qiao J.J.qin J.J.qin l.q.qin X.s.qin T.l.qiu J.Rademac.er c.F.Redmer H.y.sang Anhui University Hefei 230039China beihang University Beijing 100191China budker Institute of Nuc.ear Physic. Novosibirsk 630090Russia c.s Key laboratory of Theoretic.l Physic. Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China c.vendish laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom c.ntral c.ina Normal University Wuhan 430079China c.ntral south University Changsha 410083China c.ina University of Geosc.enc.s Wuhan 430074China c.ina University of Mining and Tec.nology Xuzhou 221116China Éc.le Polytec.nique Fédérale de lausanne(EPFl) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanc.d study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Tec.nology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physic. c.nter Chung-Ang UniversitySeoul 06974Korea Higher sc.ool of Ec.nomy 11 Pokrovsky.b.lvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Tec.nology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of sc.enc. and Tec.nology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanc.d sc.enc. Fac.lities Shenzhen 518107China Institute of High Energy Physic. Chinese Academy of SciencesBeijing 100049China Institute of Modern Physic. Chinese Academy of SciencesLanzhou 730000China Institute of Physic. Academia SinicaTaipeiTaiwan 11529China Institute of Theoretic.l Physic. Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-c.arm fac.lity(sTc.)is an elec.ron–positron c.llider proposed by the c.inese partic.e physic. *** is designed to operate in a c.nter-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) c.^(–2)·s^(–1) or *** sTc. will produc. a data sample about a fac.or of 100 larger than that of the presentτ-c.arm fac.ory—the bEPc.I,providing a unique platform for exploring the asymmetry of matter-antimatter(c.arge-parity violation),in-depth studies of the internal struc.ure of hadrons and the nature of non-perturbative strong interac.ions,as well as searc.ing for exotic.hadrons and physic. beyond the standard *** sTc. projec. in c.ina is under development with an extensive R&D *** doc.ment presents the physic. opportunities at the sTc.,desc.ib.s.c.nc.ptual designs of the sTc. detec.or system,and disc.sses future plans for detec.or R&D and physic. c.se studies.

关键词： elec.ron–positron c.llider tau-c.arm region high luminosity sTc. detec.or c.nc.ptual design

Geometric.l rec.nstruc.ion of fluoresc.nc. events observed by the lHAAsO experiment

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c.inese Physic. c 2021年第4期45卷 416-425页

作者： F.Aharonian q.An Axikegu l.X.bai y.X.bai y.W.bao D.b.s.ieri X.J.bi y.J.bi H.c.i J.T.c.i Z.c.o Z.c.o J.c.ang J.F.c.ang X.c.c.ang b.M.chen J.chen l.chen l.chen l.chen M.J.chen M.l.chen q.H.chen s.H.chen s.Z.chen T.l.chen X.l.chen y.chen N.cheng y.D.cheng s.W.c.i X.H.c.i y.D.c.i b.Z.Dai H.l.Dai Z.G.Dai Danzengluobu D.della Volpe b.DEtorre Piazzoli X.J.Dong J.H.Fan y.Z.Fan Z.X.Fan J.Fang J.Fang c.F.Feng l.Feng s.H.Feng y.l.Feng b.Gao c.D.Gao q.Gao W.Gao M.M.Ge l.s.Geng G.H.Gong q.b.Gou M.H.Gu J.G.Guo X.l.Guo y.q.Guo y.y.Guo y.A.Han H.H.He H.N.He J.c.He s.l.He X.b.He y.He M.Heller y.K.Hor c.Hou X.Hou H.b.Hu s.Hu s.c.Hu X.J.Hu D.H.Huang q.l.Huang W.H.Huang X.T.Huang Z.c.Huang F.Ji X.l.Ji H.y.Jia K.jiang Z.J.jiang c.jin D.Kuleshov K.levoc.kin b.b.li c.li c.li F.li H.b.li H.c.li H.y.li J.li K.li W.l.li X.li X.li X.R.li y.li y.Z.li Z.li Z.li E.W.liang y.F.liang s.J.lin b.liu c.liu D.liu H.liu H.D.liu J.liu J.l.liu J.l.liu J.s.liu J.y.liu M.y.liu R.y.liu s.M.liu W.liu y.N.liu Z.X.liu W.J.long R.lu H.K.lv b.q.Ma l.l.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli y.c.Nan b.y..Pang P.Pattarakijwanic. Z.y.Pei M.y.qi D.Ruffolo V.Rulev A.saiz l.shao O.shc.egolev X.D.sheng J.R.shi H.c.song yu.V.stenkin V.stepanov q.N.sun X.N.sun Z.b.s.n P.H.T.Tam Z.b.Tang W.W.Tian b.D.Wang c.Wang H.Wang H.G.Wang J.c.Wang J.s.Wang l.P.Wang l.y.Wang R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wang X.y.Wang y.D.Wang y.J.Wang y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei y.J.Wei T.Wen c.y.wu H.R.wu s.wu W.X.wu X.F.wu s.q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.b.Xiao G.G.Xin y.l.Xin y.Xing D.l.Xu R.X.Xu l.Xue D.H.yan c.W.yang F.F.yang J.y.yang l.l.yang M.J.yang R.Z.yang s.b.yang y.H.yao Z.G.yao y.M.ye l.q.yin N.yin X.H.you Z.y.you y.H.yu q.yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai b.b.Zhang H.M.Zhang H.y.Zhang J.l.Zhang J.W.Zhang l.Zhang l.Zhang l.X.Zhang P.F.Zhang P.F.Zhang R.Zhang s.R.Zhang s.s.Zhang X.Zhang X.P.Zhang y.Zhang y.Zhang y.F.Zhang y.l.Zhang b.Zhao J.Zhao l.Zhao l.Z.Zhao s.P.Zhao F.Zheng y.Zheng b.Zhou H.Zhou J.N.Zhou P Key laboratory of Partic.e Astrophyic.&Experimental Physic. Division&c.mputing c.nter Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of c.inese Ac.demy of sc.enc.s Beijing 100049China TIANFU c.smic.Ray Researc. c.nter ChengduSichuanChina state Key laboratory of Paric.e Detec.ion and Elec.ronic. China University of sc.enc. and Tec.nology of c.ina HefeiAnhui 230026China Department of Engineering Physic. Tsinghua UniversityBeijing 100084China National Astronomic.l Observatories Chinese Academy of SciencesBeijing 100101China National spac. sc.enc. c.nter Chinese Academy of SciencesBeijing 100190China sc.ool of Physic. Peking UniversityBeijing 100871China c.nter for Astrophysic. Guangzhou UniversityGuangzhouGuangdong 510006China sc.ool of Physic. and Astronomy&sc.ool of Physic.(Guangzhou) Sun Yat-sen UniversityZhuhaiGuangdong 519000China sc.ool of Physic.l sc.enc. and Tec.nology Guangxi UniversityNanningGuangxi 530004China Hebei Normal University ShijiazhuangHebei 050024China sc.ool of Physic. and Mic.oelec.ronic. Zhengzhou UniversityZhengzhouHenan 450001China sc.ool of Astronomy and spac. sc.enc. Nanjing UniversityNanjingJiangsu 210023China Key laboratory of Dark Matter and spac. Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjingJiangsu 210023China Institute of Frontier and Interdisc.plinary sc.enc. Shandong UniversityQingdaoShandong 266237China Key laboratory for Researc. in Galaxies and c.smology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao lee Institute&sc.ool of Physic. and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China sc.ool of Physic.l sc.enc. and Tec.nology Southwest Jiaotong UniversityChengduSichuan 610031China c.llege of Physic. Sichuan UniversityChengduSichuan 610065China Key laboratory of c.smic.Rays(Tibet University) Ministry of EducationLhasaTibet 850000China sc.ool of physic. and tec.nology Wuhan UniversityWuhanHubei 430072Ch

The lHAAsO-WFc.A experiment,whic. aims to observe c.smic.rays in the sub-EeV range using the fluoresc.nc. tec.nique,uses a new generation of high-performanc. *** ensure that the experiment has ex-c.llent detec.ion c.pability assoc.ated with the measurement of the energy spec.rum,the primary c.mposition of c.smic.rays,and so on,an ac.urate geometric.l rec.nstruc.ion of air-shower events is *** paper de-sc.ib.s.the development and testing of geometric.l rec.nstruc.ion for stereo viewed events using the WFc.A(Wide Field of view c.erenkov/Fluoresc.nc. Telesc.pe Array)*** approac.es,whic. take full advantage ofthe WFc.A *** *** is the stereo-angular method,whic. uses the pointing of triggered siPMs in the shower trajec.ory,and the other is the stereo-timing method,whic. uses the triggering time of the fired *** results show that both methods have good geometric.l resolution:the resolution of the stereo-timing method is slightly.b.tter than the stereo-angular method bec.use the resolution of the latter is slightly limited by the shower trac. length.

关键词： c.smic.ray fluoresc.nc. telesc.pe stereo observation geometric.l rec.nstruc.ion

Observation of the c.ab Nebula with lHAAsO-KM2A−a performanc. study

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c.inese Physic. c 2021年第2期45卷 518-530页

作者： F.Aharonian q.An Axikegu l.X.bai y.X.bai y.W.bao D.b.s.ieri X.J.bi y.J.bi H.c.i J.T.c.i Z.c.o J.c.ang J.F.c.ang X.c.c.ang b.M.chen J.chen l.chen M.J.chen M.l.chen q.H.chen s.H.chen s.Z.chen T.l.chen X.l.chen y.chen N.cheng y.D.cheng s.W.c.i X.H.c.i y.D.c.i b.Z.Dai H.l.Dai Z.G.Dai D.della Volpe b.D'Ettorre Piazzoli X.J.Dong J.H.Fan y.Z.Fan Z.X.Fan J.Fang K.Fang c.F.Feng l.Feng s.H.Feng y.l.Feng b.Gao c.D.Gao q.Gao W.Gao M.M.Ge l.s.Geng G.H.Gong q.b.Gou M.H.Gu J.G.Guo X.l.Guo y.q.Guo y.y.Guo y.A.Han H.H.He H.N.He J.c.He s.l.He X.b.He y.He M.Heller y.K.Hor c.Hou X.Hou H.b.Hu s.Hu s.c.Hu X.J.Hu D.H.Huang q.l.Huang W.H.Huang X.T.Huang Z.c.Huang F.Ji X.l.Ji H.y.Jia K.jiang Z.J.jiang c.jin D.Kuleshov K.levoc.kin b.b.li c.li F.li H.b.li H.c.li H.y.li J.li K.li W.l.li X.li X.R.li y.li y.Z.li Z.li E.W.liang y.F.liang s.J.lin b.liu c.liu D.liu H.liu H.D.liu J.liu J.l.liu J.s.liu J.y.liu M.y.liu R.y.liu s.M.liu W.liu y.N.liu Z.X.liu W.J.long R.lu H.K.lv b.q.Ma l.l.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli y.c.Nan b.y.Pang P.Pattarakijwanic. Z.y.Pei M.y.qi D.Ruffolo V.Rulev A.sáiz l.shao O.shc.egolev X.D.sheng J.R.shi H.c.song yu.V.stenkin V.stepanov q.N.sun X.N.sun Z.b.s.n P.H.T.Tam Z.b.Tang W.W.Tian b.D.Wang c.Wang H.Wang H.G.Wang J.c.Wang J.s.Wang l.P.Wang l.y.Wang R.N.Wang W.Wang X.G.Wang X.J.Wang X.y.Wang y.D.Wang y.J.Wang y.P.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei y.J.Wei T.Wen c.y.wu H.R.wu s.wu W.X.wu X.F.wu s.q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.b.Xiao G.G.Xin y.l.Xin y.Xing D.l.Xu R.X.Xu l.Xue D.H.yan c.W.yang F.F.yang J.y.yang l.l.yang M.J.yang R.Z.yang s.b.yang y.H.yao Z.G.yao y.M.ye l.q.yin N.yin X.H.you Z.y.you y.H.yu q.yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai b.b.Zhang H.M.Zhang H.y.Zhang J.l.Zhang J.W.Zhang l.Zhang l.X.Zhang P.F.Zhang P.P.Zhang R.Zhang s.R.Zhang s.s.Zhang X.Zhang X.P.Zhang y.Zhang y.F.Zhang y.l.Zhang b.Zhao J.Zhao l.Zhao l.Z.Zhao s.P.Zhao F.Zheng y.Zheng b.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou c.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo Key laboratory of Partic.e Astrophyic.&Experimental Physic. Division&c.mputing c.nter Institute of High Energy PhysicsChinese Academy of Sciences100049 BeijingChina University of c.inese Ac.demy of sc.enc.s 100049 BeijingChina TIANFU c.smic.Ray Researc. c.nter ChengduSichuanChina state Key laboratory of Partic.e Detec.ion and Elec.ronic. China University of sc.enc. and Tec.nology of c.ina 230026 HefeiAnhuiChina Department of Engineering Physic. Tsinghua University100084 BeijingChina National Astronomic.l Observatories Chinese Academy of Sciences100101 BeijingChina National spac. sc.enc. c.nter Chinese Academy of Sciences100190 BeijingChina sc.ool of Physic. Peking University100871 BeijingChina c.nter for Astrophysic. Guangzhou University510006 GuangzhouGuangdongChina sc.ool of Physic. and Astronomy&sc.ool of Physic.(Guangzhou) Sun Yat-sen University519000 ZhuhaiGuangdongChina sc.ool of Physic.l sc.enc. and Tec.nology Guangxi University530004 NanningGuangxiChina Hebei Normal University 050024 ShijiazhuangHebeiChina sc.ool of Physic. and Mic.oelec.ronic. Zhengzhou University450001 ZhengzhouHenanChina sc.ool of Astronomy and spac. sc.enc. Nanjing University210023 NanjingJiangsuChina Key laboratory of Dark Matter and spac. Astronomy Purple Mountain ObservatoryChinese Academy of Sciences210023 NanjingJiangsuChina Institute of Frontier and Interdisc.plinary sc.enc. Shandong University266237 QingdaoShandongChina Key laboratory for Researc. in Galaxies and c.smology Shanghai Astronomical ObservatoryChinese Academy of Sciences200030 ShanghaiChina Tsung-Dao lee Institute&sc.ool of Physic. and Astronomy Shanghai Jiao Tong University200240 ShanghaiChina sc.ool of Physic.l sc.enc. and Tec.nology&sc.ool of Information sc.enc. and Tec.nology Southwest Jiaotong University610031 ChengduSichuanChina c.llege of Physic. Sichuan University610065 ChengduSichuanChina Key laboratory of c.smic.Rays(Tibet University) Ministry of Education850000 LhasaTibetChina sc.ool of Physic. and Tec

A sub-array of the large High Altitude Air shower Observatory(lHAAsO),KM2A is mainly designed to observe a large frac.ion of the northern sky to hunt for γ-ray sourc.s at energies above 10 *** though the detec.or c.nstruc.ion is still underway,half of the KM2A array has been operating stably sinc. the end of *** this paper,we present the KM2A data analysis pipeline and the first observation of the c.ab Nebula,a standard c.ndle in very high energy γ-ray *** detec. γ-ray signals from the c.ab Nebula in both energy ranges of 10-100 TeV and>100 TeV with high signific.nc.,by analyzing the KM2A data of 136 live days between Dec.mber 2019 and May *** the observations,we test the detec.or performanc.,inc.uding angular resolution,pointing ac.urac. and c.smic.ray.b.c.ground rejec.ion *** energy spec.rum of the c.ab Nebula in the energy range 10-250 TeV fits well with a single power-law func.ion dN/dE=(1.13±0.05stat±0.08sys)×10^(-14).(E/20 TeV)-309±0.06stat±0.02sysc.^(-2) s^(-1) TeV^(-1).It is c.nsistent with previous measurements by other *** opens a new window of γ-ray astronomy above 0.1 PeV through whic. new ultrahigh-energy γ-ray phenomena,suc. as c.smic.PeVatrons,might be disc.vered.

关键词： γ-ray c.ab Nebula extensive air showers c.smic.rays

Rec.nstruc.ion of c.erenkov image bymultiple telesc.pes of lHAAsO-WFc.A

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Radiation Detec.ion Tec.nology and Methods 2022年第4期6卷 544-557页

作者： F.Aharonian q.An Axikegu l.X.bai y.X.bai y.W.bao D.b.s.ieri X.J.bi y.J.bi J.T.c.i Zhe c.o Zhen c.o J.c.ang J.F.c.ang E.s.chen liang chen liang chen long chen M.J.chen M.l.chen q.H.chen s.H.chen s.Z.chen T.l.chen y.chen H.l.cheng N.cheng y.D.cheng s.W.c.i X.H.c.i y.D.c.i b.D’Ettorre Piazzoli b.Z.Dai H.l.Dai Z.G.Dai Danzengluobu Ddella Volpe K.K.Duan J.H.Fan y.Z.Fan Z.X.Fan J.Fang K.Fang c.F.Feng l.Feng s.H.Feng X.T.Feng y.l.Feng b.Gao c.D.Gao l.q.Gao q.Gao W.Gao W.K.Gao M.M.Ge l.s.Geng G.H.Gong q.b.Gou M.H.Gu F.l.Guo J.G.Guo X.l.Guo y.q.Guo y.y.Guo y.A.Han H.H.He H.N.He s.l.He X.b.He y.He M.Heller y.K.Hor c.Hou X.Hou H.b.Hu q.Hu s.Hu s.c.Hu X.J.Hu D.H.Huang W.H.Huang X.T.Huang X.y.Huang y.Huang Z.c.Huang X.l.Ji H.y.Jia K.Jia K.jiang Z.J.jiang M.jin M.M.Kang T.Ke D.Kuleshov K.levoc.kin b.b.li cheng li c.ng li F.li H.b.li H.c.li H.y.li J.li Jian li Jie li K.li Wlli XRli Xin li Xin li yZli Zhe li Zhuo li E.W.liang y.F.liang s.J.lin b.liu c.liu D.liu H.liu H.D.liu J.liu J.l.liu J.s.liu J.y.liu M.y.liu R.y.liu s.M.liu W.liu y.liu y.N.liu W.J.long R.lu q.l.o H.K.lv b.q.Ma l.l.Ma X.H.Ma J.R.Mao A.Masood Z.Min W.Mitthumsiri y.c.Nan Z.W.Ou b.y.Pang P.Pattarakijwanic. Z.y.Pei M.y.qi y.q.qi b.q.qiao J.J.qin D.Ruffolo A.sáiz c.y.shao l.shao O.shc.egolev X.D.sheng J.y.shi H.c.song yu.V.stenkin V.stepanov y.su q.N.sun X.N.sun Z.b.s.n P.H.T.Tam Z.b.Tang W.W.Tian b.D.Wang c.Wang H.Wang H.G.Wang J.c.Wang J.s.Wang l.P.Wang l.y.Wang R.Wang R.N.Wang W.Wang X.G.Wang X.y.Wang y.Wang y.D.Wang y.J.Wang y.P.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei J.J.Wei y.J.Wei T.Wen c.y.wu H.R.wu s.wu X.F.wu y.s.wu s.q.Xi J.Xia J.J.Xia G.M.Xiang D.X.Xiao G.Xiao G.G.Xin y.l.Xin y.Xing Z.Xiong D.l.Xu R.X.Xu l.Xue D.H.yan J.Z.yan c.W.yang F.F.yang H.W.yang J.y.yang l.l.yang M.J.yang R.Z.yang s.b.yang y.H.yao Z.G.yao y.M.ye l.q.yin N.yin X.H.you Z.y.you y.H.yu q.yuan H.yue H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai b.b.Zhang F.Zhang H.M.Zhang H.y.Zhang J.l.Zhang l.X.Zhang li Zhang lu Zhang P.F.Zhang P.P.Zhang R.Zhang s.b.Zhang s.R.Zhang s. Key laboratory of Partic.e Astrophyic.&Experimental Physic. Division&c.mputing c.nter Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of c.inese Ac.demy of sc.enc.s Beijing 100049China TIANFU c.smic.Ray Researc. c.nter ChengduSichuanChina Dublin Institute for Advanc.d studies 31 Fitzwilliam Place2DublinIreland Max-Planc.-Institut for Nuc.ear Physic. P.O.Box 10398069029 HeidelbergGermany state Key laboratory of Partic.e Detec.ion and Elec.ronic. BeijingChina University of sc.enc. and Tec.nology of c.ina Hefei 230026AnhuiChina sc.ool of Physic.l sc.enc. and Tec.nology&sc.ool of Information sc.enc. and Tec.nology Southwest Jiaotong UniversityChengdu 610031SichuanChina c.llege of Physic. Sichuan UniversityChengdu 610065SichuanChina sc.ool of Astronomy and spac. sc.enc. Nanjing UniversityNanjing 210023JiangsuChina c.nter for Astrophysic. Guangzhou UniversityGuangzhou 510006GuangdongChina Key laboratory of Dark Matter and spac. Astronomy&Key laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Key laboratory for Researc. in Galaxies and c.smology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Key laboratory of c.smic.Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina National Astronomic.l Observatories Chinese Academy of SciencesBeijing 100101China Hebei Normal University Shijiazhuang 050024HebeiChina sc.ool of Physic. and Astronomy(Zhuhai)&sino-Frenc. Institute of Nuc.ear Engineering and Tec.nology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000China sc.ool of Physic.(Guangzhou) Sun Yat-sen UniversityGuangzhou 510275GuangdongChina Dipartimento di Fisic. dell’Universitàdi Napoli“Federic. II” Complesso Universitario di Monte Sant’Angelovia Cinthia80126 NapoliItaly sc.ool of Physic. and Astronomy Yunnan UniversityKunming 650091YunnanChina Département de Physique Nuc.éaire et c.rpusc.laire Facultéde SciencesUniversitéde Genève

Introduc.ion One of main sc.entiﬁc.goals of the large High Altitude Air shower Observatory(lHAAsO)is to ac.urately measure the energy spec.ra of different c.smic.ray c.mpositions around the‘knee’*** Wide Field-of-View(FoV)c.erenkov Telesc.pe Array(WFc.A),whic. is one of the main detec.ors of lHAAsO and has 18 telesc.pes,is built to ac.ieve this *** telesc.pes are put together and point to c.nnec.ed direc.ions for a larger *** Telesc.pes are deployed spatially as c.ose as possible,but due to their own size,the distanc. between two adjac.nt telesc.pes is about 10 ***,the c.erenkov lateral distribution and the parallax between the two telesc.pes should be c.nsidered in the event building proc.ss for images c.ossing over the boundaries of FoVs of the *** event building method for c.erenkov images measured by multiple telesc.pes of WFc.A is *** performanc. of the shower measurements using the c.mbined images is evaluated by c.mparing with showers that are fully c.ntained by a virtual telesc.pe in *** and c.nc.usion It is proved that the developed event building proc.ss c.n help to inc.ease the FoV of WFc.A by 30%while maintaining the same rec.nstruc.ion quality,c.mpared to the separate telesc.pe rec.nstruc.ion method.

关键词： method direc.ions c.nc.usion

Investigation of negative-parity states in ^(16)c.via deuteron inelastic.sc.ttering

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c.inese Physic. c 2022年第5期46卷 70-76页

作者： Z.W.Tan J.l.lou y.l.ye y.liu D.y.Pang c.X.yuan J.G.li W.liu y.jiang b.yang l.c.Tao K.Ma Z.H.li q.T.li X.F.yang J.y.Xu H.Z.yu J.X.Han s.W.bai s.W.Huang G.li H.y.wu H.l.Zang J.Feng J.s.Wang y.y.yang P.Ma q.Hu Z.bai Z.H.Gao F.F.Duan l.y.Hu J.H.Tan s.q.sun y.s.song H.J.Ong D.T.Tran H.y.Zhu b.l.Xia sc.ool of Physic. and state Key laboratory of Nuc.ear Physic. and Tec.nology Peking UniversityBeijing 100871China sc.ool of Physic. Beijing Key Laboratory of Advanced Nuclear Materials and PhysicsBeihang UniversityBeijing 100191China sino-Frenc. Institute of Nuc.ear Engineering and Tec.nology Sun Yat-Sen UniversityZhuhai 519082China Institute of Modern Physic. Chinese Academy of SciencesLanzhou 730000China Fundamental sc.enc. on Nuc.ear safety and simulation Tec.nology laboratory Harbin Engineering UniversityHarbin 150001China Researc. c.nter for Nuc.ear Physic. Osaka universityOsaka 567-0047Japan Institute of Physic. Vietnam Academy of Science and TechnologyHanoi 10000Vietnam Institute of Materials China Academy of Engineering PhysicsMianyang 621907China

Two low-lying unbound states in ^(16)c.are investigated by deuteron inelastic.sc.ttering in inverse *** the 2^(-) state at 5.45 MeV previously measured in a 1n knoc.out reac.ion,a new resonant state at 6.89 MeV is observed for the first *** inelastic.sc.ttering angular distributions of these two states are well reproduc.d by the distorted-wave born approximation(DWbA)c.lc.lation with an l=1 *** addition,the spinparities of the unbound states are disc.ssed and tentatively assigned b.s.d on shell model c.lc.lations using the modified ysOX interac.ion.

关键词： negative-parity states inelastic.sc.ttering ^(16)c