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Higher-order m.de analy.is for SOLEIL-ty.e superconducting cavity

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中国科学技术大学学报 2024年第7期54卷 0706-1-0706-11页

作者： Chai x. li q. x. y. Tang y. Tan m. Wu C.-F. National Sy.chrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China

A 499.8 m.z SOLEIL-ty.e superconducting cavity.was sim.lated and designed for the first tim. in this paper. The higher-order m.de (HOm. properties of the cavity.were investigated. Two kinds of coax.al HOm.couplers were designed. Using 4 L-ty.e and 4 T-ty.e HOm.couplers, the longitudinal im.edance was suppressed to 3 kΩ, and the transverse im.edance below 30 kΩ/m. The HOm.dam.ing req.irem.nts of Hefei Advanced light Facility.(HALF) were satisfied. This paper conducts an in-depth study.on the radio freq.ency.(RF) design, m.ltipacting optim.zation, and therm.l analy.is of these coax.al couplers. Sim.lation results indicated that under operating acceleration voltage, the optim.zed couplers does not ex.ibit m.ltiplicating or therm.l breakdown phenom.na. The cavity.has the potential to reach a higher acceleration gradient.

关键词：高次模耦合器超导腔高频系统二次电子倍增热仿真

m.crostructure evolution and shape m.m.ry.behaviors of Ni_(47)Ti_(44)Nb_(9)alloy.subjected to m.ltistep therm.m.chanical loading with different prestrain levels

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Journal of m.terials Science & Technology 2024年第4期171卷 80-93页

作者： y.H.Zhang H.li Z.W.y.ng x.liu q.F.Gu State Key.Laboratory.of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Shaanx. Key.Laboratory.of High-Perform.nce Precision Form.ng Technology.and Eq.ipm.nt Northwestern Polytechnical UniversityXi’an 710072China

Ni_(47)Ti_(44)Nb_(9)shape m.m.ry.alloy.Sm.)is a prom.sing m.terial in the aerospace field due to its wide transform.tion *** application of shape m.m.ry.effect depends on m.ltistep therm.m.chan-ical loading,viz.,low-tem.erature deform.tion and subseq.ent heating to ***-tem.erature deform.tion prestrain play. a pivotal role in shape m.m.ry.properties tailoring of Sm. ***,m.crostructure evolution and deform.tion m.chanism. of Ni_(47)Ti_(44)Nb_(9)Sm. subjected to vari-ous prestrain levels are still *** this end,m.crostructure evolution and shape m.m.ry.behaviors of Ni_(47)Ti_(44)Nb_(9)alloy.subjected to m.ltistep therm.m.chanical loading with prestrain levels of 8%-16%at-28℃(m.(s)+30℃)were *** results dem.nstrate that the stress-strain curve of the specim.n ex.ibits four distinct stages at a m.x.m.l prestrain of 16%.Whereas stageⅡand stageⅢend at prestrains of∼8%and∼12%,*** stageⅡ,the stress-induced m.rtensitic transform.tion is accom.anied by.the dislocation slip of the NiTi m.trix.andβ-Nb *** stageⅢ,in addition to the higher density.of dislocations and further growth of stress-induced m.rtensite variants(SIm.s),(001)com.ound twins are introduced as a result of the(001)deform.tion twinning in stress-induced ***{20-1}m.rtensite twins are gradually.introduced in stageⅣ.Correspondingly.after subseq.ent unloading and heating,a higher density.of{114}austenite twins form.in the specim.n with a larger prestrain of 16%.With increasing prestrain from.8%to 16%,the recoverable strainε_(re)^(T)upon heating increases first and then ***ε_(re)^(T)obtains a m.x.m.m.of 7.03%at 10%prestrain and de-creases to 6.17%at 16%*** increase ofε_(re)^(T)can be attributed to the form.tion of new SIm.s,the further growth of ex.sting SIm.s,and the recoverable(001)com.ound *** the decrease ofε_(re)^(T)is m.inly.associated with the irrecoverable strain by.20−1}m.rtensite *** effe

关键词： Ni_(47)Ti_(44)Nb_(9)shape m.m.ry.alloy Wide transform.tion hy.teresis Therm.m.chanical loading m.crostructure evolution Shape m.m.ry.behaviors Stress-induced m.rtensitic transform.tion Deform.tion twinning

Evidence for particle acceleration approaching PeV energies in the W51 com.lex

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Science Bulletin 2024年第18期69卷 2833-2841页

作者： Cao, Zhen Aharonian, F. Ax.kegu Bai, y.x. Bao, y.W. Bastieri, D. Bi, x.J. Bi, y.J. Bian, W. Bukevich, A.V. Cao, q. Cao, W.y. Cao, Zhe Chang, J. Chang, J.F. Chen, A.m. Chen, E.S. Chen, H.x. Chen, liang Chen, lin Chen, Long Chen, m.J. Chen, m.L. Chen, q.H. Chen, S. Chen, S.H. Chen, S.Z. Chen, T.L. Chen, y. Cheng, N. Cheng, y.D. Cui, m.y. Cui, S.W. Cui, x.H. Cui, y.D. Dai, B.Z. Dai, H.L. Dai, Z.G. Danzengluobu Dong, x.q. Duan, K.K. Fan, J.H. Fan, y.Z. Fang, J. Fang, J.H. Fang, K. Feng, C.F. Feng, H. Feng, L. Feng, S.H. Feng, x.T. Feng, y. Feng, y.L. Gabici, S. Gao, B. Gao, C.D. Gao, q. Gao, W. Gao, W.K. Ge, m.m. Geng, L.S. Giacinti, G. Gong, G.H. Gou, q.B. Gu, m.H. Guo, F.L. Guo, x.L. Guo, y.q. Guo, y.y. Han, y.A. Hasan, m. He, H.H. He, H.N. He, J.y. He, y. Hor, y.K. Hou, B.W. Hou, C. Hou, x. Hu, H.B. Hu, q. Hu, S.C. Huang, D.H. Huang, T.q. Huang, W.J. Huang, x.T. Huang, x.y. Huang, y. Ji, x.L. Jia, H.y. Jia, K. Jiang, K. Jiang, x.W. Jiang, Z.J. Jin, m. Kang, m.m. Karpikov, I. Kuleshov, D. Kurinov, K. li, B.B. li, C.m. li, Cheng li, Cong li, D. li, F. li, H.B. li, H.C. li, Jian li, Jie li, K. li, S.D. li, W.L. li, x.R. li, x.n li, y.Z. li, Zhe li, Zhuo liang, E.W. liang, y.F. lin, S.J. liu, B. liu, C. liu, D. liu, D.B. liu, H. liu, H.D. liu, J. liu, J.L. liu, m.y. liu, R.y. liu, S.m. liu, W. liu, y. liu, y.N. Luo, q. Luo, y. Lv, H.K. m., B.q. m., L.L. m., x.H. m.o, J.R. m.n, Z. m.tthum.iri, W. m., H.J. Nan, y.C. Neronov, A. Ou, L.J. Pattarakijwanich, P. Pei, Z.y. q., J.C. q., m.y. q.ao, B.q. q.n, J.J. Raza, A. Ruffolo, D. Sáiz, A. Saeed, m. Sem.koz, D. Shao, L. Shchegolev, O. Sheng, x.D. Shu, F.W. Song, H.C. Stenkin, y..V. Stepanov, V. Su, y. Sun, D.x. Sun, q.N. Sun, x.N. Sun, Z.B. Takata, J. Tam. P.H.T. Key.Laboratory.of Particle Astrophy.ics & Ex.erim.ntal Phy.ics Division & Com.uting Center Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China University.of Chinese Academ. of Sciences Beijing 100049 China TIANFU Cosm.c Ray.Research Center Chengdu China Dublin Institute for Advanced Studies 31 Fitzwilliam Place 2 Dublin Ireland m.x.Planck-Institut for Nuclear Phy.ics P.O. Box 103980 Heidelberg 69029 Germany School of Phy.ical Science and Technology.& School of Inform.tion Science and Technology Southwest Jiaotong University Chengdu 610031 China School of Astronom. and Space Science Nanjing University Nanjing 210023 China Center for Astrophy.ics Guangzhou University Guangzhou 510006 China Tsung-Dao Lee Institute & School of Phy.ics and Astronom. Shanghai Jiao Tong University Shanghai 200240 China Institute for Nuclear Research of Russian Academ. of Sciences Moscow 117312 Russia Hebei Norm.l University Shijiazhuang 050024 China University.of Science and Technology.of China Hefei 230026 China State Key.Laboratory.of Particle Detection and Electronics China Key.Laboratory.of Dark m.tter and Space Astronom. & Key.Laboratory.of Radio Astronom. Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210023 China Research Center for Astronom.cal Com.uting Zhejiang Laboratory Hangzhou 311121 China Key.Laboratory.for Research in Galax.es and Cosm.logy Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China School of Phy.ics and Astronom. Yunnan University Kunming 650091 China Key.Laboratory.of Cosm.c Ray. (Tibet University. Ministry of Education Lhasa 850000 China National Astronom.cal Observatories Chinese Academy of Sciences Beijing 100101 China School of Phy.ics and Astronom. (Zhuhai) & School of Phy.ics (Guangzhou) & Sino-French Institute of Nuclear Engineering and Technology.(Zhuhai) Sun Yat-sen University Zhuhai 519000 & Guangzhou 510275 Guangdong China Institute of Frontier and

The γ-ray.em.ssion from.the W51 com.lex.is widely.acknowledged to be attributed to the interaction between the cosm.c ray. (CRs) accelerated by.the shock of supernova rem.ant (SNR) W51C and the dense m.lecular clouds in the adjacent star-form.ng region, W51B. However, the m.x.m.m.acceleration capability.of W51C for CRs rem.ins elusive. Based on observations conducted with the Large High Altitude Air Shower Observatory.(LHAASO), we report a significant detection of γ ray. em.nating from.the W51 com.lex. with energies from.2 to 200 TeV. The LHAASO m.asurem.nts, for the first tim., ex.end the γ-ray.em.ssion from.the W51 com.lex.bey.nd 100 TeV and reveal a significant spectrum.bending at tens of TeV. By.com.ining the "π0-decay.bum." featured data from.Ferm.-LAT, the broadband γ-ray.spectrum.of the W51 region can be well-characterized by.a sim.le pp-collision m.del. The observed spectral bending feature suggests an ex.onential cutoff at ∼400 TeV or a power-law break at ∼200 TeV in the CR proton spectrum. m.st likely.providing the first evidence of SNRs serving as CR accelerators approaching the PeV regim.. Additionally. two y.ung star clusters within W51B could also be theoretically.viable to produce the m.st energetic γ ray. observed by.LHAASO. Our findings strongly.support the presence of ex.rem. CR accelerators within the W51 com.lex.and provide new insights into the origin of Galactic CRs. © 2024 Science China Press

关键词： Cosm.c ray.

STCF conceptual design report (Volum. 1): Phy.ics & detector

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

作者： m.Achasov x.C.Ai L.P.An R.Aliberti q.An x.Z.Bai y.Bai O.Bakina A.Barny.kov V.Blinov V.Bobrovnikov D.Bodrov A.Bogom.agkov A.Bondar I.Boy.o Z.H.Bu F.m.Cai H.Cai J.J.Cao q.H.Cao x.Cao Z.Cao q.Chang K.T.Chao 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.Dedovich 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.Fedotovich 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.Gilm.n 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.Kuzm.n y.Lei E.Levichev 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.li 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.liu S.B.liu T.liu x.liu y.W.liu y.liu y.L.liu Z.q.liu 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.Ly. x.R.Ly. J.P.m. P.m. y.m. y.m.m. F.m.as S.m.lde D.m.tvienko Z.x.m.ng R.m.tchell A.Nefediev y.Nefedov S.L.Olsen q.Ouy.ng P.Pakhlov G.Pakhlova x.Pan y.Pan E.Passem.r y.P.Pei H.P.Peng L.Peng x.y.Peng x.J.Peng K.Peters S.Pivovarov E.Py.ta B.B.q. y.q.q. W.B.q.an y.q.an C.F.q.ao J.J.q.n J.J.q.n L.q.q.n x.S.q.n T.L.q.u J.Radem.cker C.F.Redm.r H.y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Phy.ics Novosibirsk 630090Russia CAS Key.Laboratory.of Theoretical Phy.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Norm.l University Wuhan 430079China Central South University Changsha 410083China China University.of Geosciences Wuhan 430074China China University.of m.ning and Technology Xuzhou 221116China École Poly.echniq.e Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University.Frankfurt D-60325 Frankfurt am MainGermany Guangx. Norm.l University Guilin 541004China Guangx. Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Norm.l University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University.of Technology Hefei 230601China Helm.oltz Institute m.inz Staudinger Weg 18D-55099 MainzGermany Henan Norm.l University Xinxiang 453007China Henan University Kaifeng 475004China High Energy.Phy.ics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Econom. 11 Pokrovsky.Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University.of Autom.tive Technology Shiyan 442002China Hunan Norm.l University Changsha 410081China Hunan University.of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner m.ngolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Institute of m.dern Phy.ics Chinese Academy of SciencesLanzhou 730000China Institute of Phy.ics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Phy.ics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm.facility.STCF)is an electron–positron collider proposed by.the Chinese particle phy.ics *** is designed to operate in a center-of-m.ss energy.range from.2 to 7 GeV with a peak lum.nosity.of 0.5×10^(35) cm.(–2)·s^(–1) or *** STCF will produce a data sam.le about a factor of 100 larger than that of the presentτ-charm.factory.the BEPCII,providing a uniq.e platform.for ex.loring the asy.0}etry.of m.tter-antim.tter(charge-parity.violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for ex.tic hadrons and phy.ics bey.nd the Standard *** STCF project in China is under developm.nt with an ex.ensive R&D *** docum.nt presents the phy.ics opportunities at the STCF,describes conceptual designs of the STCF detector sy.tem.and discusses future plans for detector R&D and phy.ics case studies.

关键词： electron–positron collider tau-charm.region high lum.nosity STCF detector conceptual design

Generation of polarized electron beam. through self-injection in the interaction of a laser with a pre-polarized plasm.

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High Power Laser Science and Engineering 2024年第3期 67-73页

作者： L.R.y.n x.F.li y.J.Gu N.Cao q.Kong m.Büscher S.m.Weng m.Chen Z.m.Sheng Key.Laboratory.of Nuclear Phy.ics and Ion-beam.Application (m. E) Institute of Modern Physics Department of Nuclear Science and Technology Fudan University State Key.Laboratory.of High Field Laser Phy.ics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences SANKEN (Institute of Scienti?c and Industrial Research) Osaka University Sichuan Research Institute Shanghai Jiao Tong University Peter Grünberg Institut (PGI-6) Forschungszentrum Jülich Institut für Laser- und Plasm.phy.ik Heinrich-Heine-Universit?t Düsseldorf Key.Laboratory.for Laser Plasm.s (m. E) School of Physics and Astronomy Shanghai Jiao Tong University Collaborative Innovation Center of IFSA Shanghai Jiao Tong University Tsung-Dao Lee Institute Shanghai Jiao Tong University

Polarized electron beam.production via laser wakefield acceleration in pre-polarized plasm. is investigated by.particlein-cell sim.lations. The evolution of the electron beam.polarization is studied based on the Thom.s±Bargm.nn±m.chel±Telegdi eq.ation for the transverse and longitudinal self-injection, and the depolarization process is found to be influenced by.the injection schem.s. In the case of transverse self-injection, as found ty.ically.in the bubble regim., the spin precession of the accelerated electrons is m.inly.influenced by.the wakefield. However, in the case of longitudinal injection in the q.asi-1D regim. (for ex.m.le, F. y. li et al., Phy.. Rev. Lett. 110, 135002 (2013)), the direction of electron spin oscillates in the laser field. Since the electrons m.ve around the laser ax.s, the net influence of the laser field is nearly.zero and the contribution of the wakefield can be ignored. Finally. an ultra-short electron beam.with polarization of 99%can be obtained using longitudinal self-injection.

关键词：

Ground-state m.ss of ^(22)Al and test of state-of-the-art ab initio calculations

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Chinese Phy.ics C 2024年第3期48卷 72-78页

作者：孙铭泽于越王新鹏王猛李健国张玉虎 K.Blaum.陈祖毅陈瑞九邓涵宇付超义葛文文黄文嘉焦红扬李红蕙李宏福罗胤芳廖挺 y.Alitvinov 司敏帅鹏史金阳王茜邢元明徐星徐瑚珊许甫荣袁琪 T.y.m.guchi 颜鑫亮杨建成原有进周小红周旭张敏曾奇 CAS Key.Laboratory.of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China m.x.Planck-Institut für Kernphy.ik Saupfercheckweg 169117 HeidelbergGermany GSI Helm.oltzzentrum.für Schwerionenforschung Planckstraße 164291 DarmstadtGermany Advanced Energy.Science and Technology.Guangdong Laboratory Huizhou516007China State Key.Laboratory.of Nuclear Phy.ics and Technology School of PhysicsPeking UniversityBeijing 100871China Departm.nt of Phy.ics Saitama UniversitySaitama 338-8570Japan School of Nuclear Science and Engineering East China University of TechnologyNanchang 330013China

The ground-state m.ss ex.ess of the T_(z)=−2 drip-line nucleus ^(22)Al is m.asured for the first tim. as 18103(10)keV using the newly.developed Bρ-defined isochronous m.ss spectrom.try.m.thod at the cooler storage ring in *** new m.ss ex.ess value allowed us to determ.ne the ex.itation energies of the two low-ly.ng 1+states in ^(22)Al with significantly.reduced uncertainties of 51 *** com.ared to the analogue states in its m.rror nucleus ^(22)F,the m.rror energy.differences of the two 1^(+)states in the ^(22)Al-^(22)F m.rror pair are determ.ned to be−625(51)keV and−330(51)*** ex.itation energies and m.rror energy.differences are used to test the state-of-the-art ab initio valence-space in-m.dium.sim.larity.renorm.lization group calculations with four sets of interactions derived from.the chiral effective field *** m.chanism.leading to the large m.rror energy.differences is investigated and attributed to the occupation of theπs_(1/2) orbital.

关键词： nuclear m.ss Bρ-defined Im. m.rror energy.difference ab initio VS-Im.RG calculations chiral interactions

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Am.litude analy.is of the decay. D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese Phy.ics C 2024年第8期48卷 6-33页

作者： m.Ablikim.m.N.Achasov P.Adlarson O.Afedulidis x.C.Ai R.Aliberti A.Am.roso q.An y.Bai O.Bakina I.Balossino y.Ban H.-R.Bao V.Batozskay. K.Begzsuren N.Berger m.Berlowski m.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boy.o R.A.Briere A.Brueggem.nn H.Cai x.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen m.L.Chen S.J.Chen S.L.Chen S.m.Chen T.Chen x.R.Chen x.T.Chen y.B.Chen y.q.Chen Z.J.Chen Z.y.Chen S.K.Choi x.Chu G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbey.si R.E.de Boer D.Dedovich C.q.Deng Z.y.Deng A.Denig I.Deny.enko m.Destefanis F.De m.ri B.Fang S.S.Fang W.x.Fang y.Fang y.q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.q.Feng J.H.Feng y.T.Feng K.Fischer m.Fritsch C.D.Fu J.L.Fu y.W.Fu H.Gao y.N.Gao y.ng Gao S.Garbolino I.Garzia P.T.Ge Z.W.Ge C.Geng E.m.Gersabeck B.Ding x.x.Ding y.Ding y.Ding J.Dong L.y.Dong m.y.Dong x.Dong m.C.Du S.x.Du Z.H.Duan P.Egorov y.H.Fan J.Fang JA.Gilm.n K.Goetzen L.Gong W.x.Gong W.Gradl S.Gram.gna m.Greco m.H.Gu y.T.Gu C.y.Guan Z.L.Guan A.q.Guo L.B.Guo m.J.Guo R.P.Guo y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han x.q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz y.K.Heng C.Herold T.Holtm.nn P.C.Hong G.y.Hou x.T.Hou y.R.Hou Z.L.Hou B.y.Hu H.m.Hu J.F.Hu T.Hu y.Hu G.S.Huang K.x.Huang L.q.Huang x.T.Huang y.P.Huang T.Hussain F.H\"olzken N.H\"usken N.in der Wiesche m.Irshad J.Jackson S.Janchiv J.H.Jeong q.Ji q.P.Ji W.Ji x.B.Ji x.L.Ji y.y.Ji x.q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang x.S.Jiang y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin y.Jin m.q.Jing x.m.Jing T.Johansson S.Kabana N.Kalantar-Nay.stanaki x.L.Kang x.S.Kang m.Kavatsy.k B.C.Ke V.Khachatry.n A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf m.Kuessner x.Kui A.Kupsc W.K\"uhn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei H.Leithoff m.Lellm.nn T.Lenz C.li C.li C.H.li Cheng li D.m.li F.li G.li H.li H.B.li H.J.li H.N.li Hui li J.R.li J.S.li K.li L.J.li L.K.li Lei li m.H.li P.R.li q.m.li q.x.li R.li S.x.li T.li W.D.li W.G.li x.li x.H.li x.L.li x.y.li y Institute of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum.Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Phy.ics SB RAS(BINP) Novosibirsk 630090Russia Carnegie m.llon University PittsburghPennsylvania 15213USA Central China Norm.l University Wuhan 430079China Central South University Changsha 410083China China Center of Advanced Science and Technology Beijing 100190China China University.of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COm.ATS University.Islam.bad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI Helm.oltzcentre for Heavy.Ion Research Gm.H D-64291 DarmstadtGermany Guangx. Norm.l University Guilin 541004China Guangx. University Nanning 530004China Hangzhou Norm.l University Hangzhou 310036China Hebei University Baoding 071002China Helm.oltz Institute m.inz Staudinger Weg 18D-55099 MainzGermany Henan Norm.l University Xinxiang 453007China Henan University Kaifeng 475004China Henan University.of Science and Technology Luoyang 471003China Henan University.of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Norm.l University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology.m.dras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner m.ngolia University Hohhot 010021China Institute of m.dern Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated lum.nosity.of 2.93 fb^(−1)taken at the center-of-m.ss energy.s=3.773 GeV with the BESIII detector,a joint am.litude analy.is is perform.d on the decay. D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual com.onents are obtained,and large interferences am.ng the dom.nant com.onents of the decay. D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained am.litude m.del,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determ.ned to be(75.2±1.1_(stat).±1.5_(sy.t.))%and(68.9±1.5_(stat).±2.4_(sy.t.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are m.asured to be(0.688±0.010_(stat.)±0.010_(sy.t.))%and(0.951±0.025_(stat.)±0.021_(sy.t.))%,*** am.litude analy.is provides an im.ortant m.del for the binning strategy.in m.asuring the strong phase param.ters of D^(0)→4πwhen used to determ.ne the CKm.angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)m.son decay. am.litude analy.is CP-even fraction

由超拍电子伏特加速器产生的超高能伽马射线气泡

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Science Bulletin 2024年第4期69卷 449-457页

作者： LHAASO Collaboration Zhen Cao Chuandong Gao Cong li Ruo-y. liu Ruizhi y.ng 不详 Key.Laboratory.of Particle Astrophy.cs&Ex.erim.ntal Phy.ics Division&Com.uting Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University.of Chinese Academ. of Sciences Beijing 100049China TIANFU Cosm.c Ray.Research Center ChengduChina Institute of Frontier and Interdisciplinary.Science Shandong UniversityQingdao 266237China School of Astronom. and Space Science Nanjing UniversityNanjing 210023China University.of Science and Technology.of China Hefei 230026China

We report the detection of aγ-ray.bubble spanning at least 100deg2 in ultra-high energy.UHE)up to a few PeV in the direction of the star-form.ng region Cy.nus x.im.ly.ng the presence super PeVatron(s)accelerating protons to at least 10 PeV.A log-parabola form.with the photon index.(E)=(2.71±0.02)+(0.11±0.02)×log10(E/10 TeV)is found fitting the gam.a-ray.energy.spectrum.of the bubble *** sources,“hot spots”correlated with very.m.ssive m.lecular clouds,and a q.asi-spherical am.rphousγ-ray.em.tter with a sharp central brightening are observed in the *** the core of~0.5°,spatially.associating with a region containing m.ssive OB association(Cy.nus OB2)and a m.croq.asar(Cy.nus x.3),as well as previously.reported m.lti-TeV sources,an enhanced concentration of UHEγ-ray. is observed with 2 photons at energies above 1 *** general feature of the bubble,the m.rphology.and the energy.spectrum.are reasonably.reproduced by.the assum.tion of a particle accelerator in the core,continuously.injecting protons into the am.ient m.dium.

关键词： Cosm.c ray. γ-ray. Interstellar m.dium Star cluster

First-Principles Study.of the Influence of Lattice m.sfit on the Behavior and the Ductility.Effect of Hafnium.in Ni-Ni3AI Sy.tem

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Acta m.tallurgica Sinica(English Letters) 2014年第1期27卷 87-94页

作者： y. Wu J. Guo W. Zhang x. m. q. Zhang J. Hou R. Huang x. liu Institute of m.lecular Engineering and Applied Chem.stry Anhui University of Technology Ma'anshan 243002 China Sheny.ng National Laboratory.for m.terials Science Instituteof Metal Research Chinese Academy of SciencesShenyang 110016 China College of Phy.ics Science and Technology Shenyang NormalUniversity Huanghe Street 253 Shengyang 110034 China School of m.terials Science and Engineering Anhui Universityof Technology Ma'anshan 243002 China

Two Ni/Ni3Al-interface-contained cluster m.dels with/without lattice m.sfit are studied by.first-principles m.thod to clarify.the debates about the segregation behaviors of Hafnium.（Hf） and ex.lore the influence of lattice m.sfit on the ductility.effect of Hr. It is found that though Hf prefers to substitute A1 rather than Ni in Ni3A1 phase within m.st of the investigated m.sfit range, its stronger preferring to Ni phase than NiaA1 phase m.kes it im.ossible to go into Ni3A1 phase to occupy.A1 site in Ni-Ni3A1 alloy.. Bond order analy.is in Hf-free case shows that lattice m.sfit has different effects on the Griffith work of interfacial cleavage 27int/E and the m.x.m.m.theoretical shear stress Zm.x.of Ni and Ni3A1, contributing to the ex.stence of anom.lous strength-tem.erature phenom.na in NiaA1 alloy.. However, the addition of Hf will m.ke the 27int/E （or Zm.x. of both Ni3A1 and Ni decrease （or increase） with lattice m.sfit, indicating that the addition of Hf m.y.m.ke the anom.lous strength-tem.erature relationship in Ni3A1 region disappear locally.

关键词： Hafnium Lattice m.sfit Segregation Ductility

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