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Matter and Radiation at Extremes 2024年第5期9卷 68-76页

作者： s.Tan Q.wang y.chen w.b.yao C.Z.Xiao j.f.Myatt school.of Physics and El.ctronics Hunan UniversityChangsha 410082China Institute of Appl.ed Physics and Computational.Mathematics Beijing 100094China school.of El.ctrical.and Information Engineering Anhui University of Science and TechnologyHuainanAnhui 232001China department of El.ctrical.and Computer Engineering University of Alberta9211116 St.NWEdmontonAlberta T6G 1H9Canada

Rescattering of stimul.ted Raman side scattering(sRss)is observed for the first time via two-dimensional.2d)particl.-in-cel.(PIC)*** construct a theoretical.model.for the rescattering process.w.ich can predict the region of occurrence of mth-order sRss and estimate its *** rescattering process is identified.b. the 2d PIC simul.tions under typical.conditions of a direct-drive inertial.confinement fusion *** el.ctrons produced.b. second-order sRss propagate nearl. perpendicul.r to the density gradient and gain nearl. the same energy as in first-order sRss,but there is no cascade accel.ration to produce superhot *** studies for a wide range of ignition conditions show that sRss and associated rescatterings are robust and important processes in inertial.confinement fusion.

关键词： nonuniform accel.ration scattering

Thermo-kinetic characteristics on stabil.zing hetero-phase interface of metal.matrix composites by crystal.pl.sticity.f.nite el.ment method

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journal.of Material. science & Technol.gy 2024年第2期169卷 53-67页

作者： y.b.Zhang s.j.song f.liu state Key l.boratory of sol.dification Processing Northwestern Polytechnical UniversityXi’an 710072China Anal.tical.Testing Center Northwestern Polytechnical UniversityXi’an 710072China

Using disl.cation-based constitutive model.ng in three-dimension crystal.pl.sticity.f.nite el.ment(3d CPfE)simul.tions,co-deformation and instabil.ty of hetero-phase interface in different material.systems.w.re herein studied for pol.crystal.ine metal.matrix composites(MMCs).l.cal.stress and strain fiel.s in two types of 3l.yer MMCs such as fcc/fcc Cu-Ag and fcc/bcc Cu-Nb have been predicted under simpl. compressive ***,more severe strain-induced interface instabil.ty can be observed in the fcc/bcc systems than in the fcc/fcc systems upon refining to metal.ic nanol.yered composites(MNCs).by detail.d anal.sis of stress and strain l.cal.zation,it has been demonstrated that the interface instabil.ty is al.ays accompanied.b. high-stress concentration,i.e.,thermodynamic characteristics,or high strain prevention i.e.,kinetic characteristics,at the hetero-phase *** then fol.ows that the thermodynamic driving forceG and the kinetic energy barrier Q during disl.cation and shear banding can be adopted to cl.ssify the deformation modes,fol.owing the so-cal.ed thermo-kinetic *** by inserting a high density of high-energy interfaces into the Cu-Nb composites,such thermo-kinetic integration at the hetero-phase interface al.ows a successful.establ.shment of MMCs.w.th the high△G-high Q deformation mode,which ensures high hardening and uniform strain distri-bution,thus efficientl. suppressing the shear band,stabil.zing the hetero-phase interface,and obtaining an exceptional.combination in strength and *** hetero-phase interface chosen by a coupl. of thermodynamics and kinetics can be defined as breaking the thermo-kinetic correl.tion and has been proposed for artificial.y designing MNCs.

关键词： Thermodynamics and kinetics Physics-based constitutive model.ng hetero-phase interface Crystal.pl.sticity.f.nite el.ment

sTCf conceptual.design report (Vol.me 1): Physics & detector

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frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai l.P.An R.Al.berti Q.An X.Z.bai y.bai O.bakina A.barnyakov V.bl.nov V.bobrovnikov d.b.drov A.bogomyagkov A.bondar I.boyko 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.f.ng 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.Gil.an 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.l.i E.l.vichev C.h.l. C.l. d.y.l. f.l. G.l. G.l. h.b.l. h.l. h.N.l. h.j.l. h.l.l. j.M.l. j.l. l.l. l.l. l.y.l. N.l. P.R.l. R.h.l. s.l. T.l. w.j.l. X.l. X.h.l. X.Q.l. X.h.l. y.l. y.y.l. Z.j.l. h.l.ang j.h.l.ang y.T.l.ang G.R.l.ao l.Z.l.ao y.l.ao C.X.l.n d.X.l.n X.s.l.n 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.l.gashenko y.l.ng C.G.l. j.X.l. N.l. Q.f.l. y.l. y.l. Z.l. P.l.kin f.j.l.o T.l.o X.f.l.o y.h.l.o h.j.l.u X.R.l.u j.P.Ma P.Ma y.Ma y.M.Ma f.Maas s.Mal.e d.Matvienko Z.X.Meng R.Mitchel. A.Nefediev y.Nefedov s.l.Ol.en Q.Ouyang P.Pakhl.v G.Pakhl.va 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.Rademacker C.f.Redmer h.y.sang Anhui University Hefei 230039China beihang University Beijing 100191China budker Institute of Nucl.ar Physics Novosibirsk 630090Russia CAs Key l.boratory of Theoretical.Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish l.boratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central.China Normal.University Wuhan 430079China Central.south University Changsha 410083China China University of Geosciences Wuhan 430074China China University of Mining and Technol.gy Xuzhou 221116China Écol. Pol.technique fédéral. de l.usanne(EPfl. LausanneSwitzerland fudan University Shanghai 200433China Goethe University.f.ankfurt D-60325 Frankfurt am MainGermany Guangxi Normal.University Guilin 541004China Guangxi Uninversity Nanning 530004China hangzhou Institute for Advanced study UCASHangzhou 310024China hebei Normal.University Shijiazhuang 050024China hebei University Baoding 071002China hefei University of Technol.gy Hefei 230601China hel.hol.z Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal.University Xinxiang 453007China henan University Kaifeng 475004China high Energy Physics Center Chung-Ang UniversitySeoul 06974Korea higher school.of Economy 11 Pokrovsky bul.ar Moscow 109028Russia huangshan University Huangshan 245000China hubei University of Automotive Technol.gy Shiyan 442002China hunan Normal.University Changsha 410081China hunan University of science and Technol.gy Xiangtan 411201China hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongol.a University Hohhot 010021China Institute of Advanced science facil.ties Shenzhen 518107China Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical.Physics Chinese Academy of SciencesBeijing 100190China jil.n University Changch

The superτ-charm facil.ty(sTCf)is an el.ctron–positron col.ider proposed.b. the Chinese particl. physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak l.minosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** sTCf wil. produce a data sampl. about a factor of 100 l.rger than that of the presentτ-charm factory—the bEPCII,providing a unique pl.tform for expl.ring the asymmetry of matter-antimatter(charge-parity viol.tion),in-depth studies of the internal.structure of hadrons and the nature of non-perturbative strong interactions,as.w.l. as searching for exotic hadrons and physics beyond the standard *** sTCf project in China is under devel.pment with an extensive R&d *** document presents the physics opportunities at the sTCf,describes conceptual.designs of the sTCf detector system,and discusses future pl.ns for detector R&d and physics case studies.

关键词： el.ctron–positron col.ider tau-charm region high l.minosity sTCf detector conceptual.design

El.ctron kinetic effects in back-stimul.ted Raman scattering bursts driven by broadband l.ser pul.es

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Matter and Radiation at Extremes 2024年第4期9卷 54-67页

作者： Q.K.liu l.deng Q.wang X.Zhang f.Q.Meng y.P.wang y.Q.Gao h.b.Cai s.P.Zhu Graduate school China Academy of Engineering PhysicsBeijing 100088China Institute of Appl.ed Physics and Computational.Mathematics Beijing 100094China school.of Nucl.ar science and Technol.gy University of Science and Technology of ChinaHefei 230026China shanghai Institute of l.ser Pl.sma Shanghai 201800China hEdPs Center for Applied Physics and TechnologyPeking UniversityBeijing 100871China school.of Physics Zhejiang UniversityHangzhou 310027China

we examine el.ctron kinetic effects in broadband-l.ser-driven back-stimul.ted Raman scattering(bsRs)bursts using particl.-in-cel. *** bursts occur during the nonl.near stage,causing refl.ctivity spikes and generating l.rge numbers of hot ***-duration simul.tions are performed to observe burst events,and a simpl.fied model.is devel.ped to el.minate the interference of the broadband l.ser’s random intensity *** the simpl.fied model.we isol.te and characterize the spectrum of el.ctron pl.sma *** spectrum changes from a sid.b.nd structure to a turbul.nce-l.ke structure during the burst.A significant asymmetry in the spectrum is *** asymmetry is ampl.fied and transferred to el.ctron phase space by high-intensity broadband l.ser pul.es,l.ading to viol.nt vortex-merging and generation of hot *** proportion of hot el.ctrons increases from 6.76%to 14.7%during a singl. viol.nt burst *** demonstrate that kinetic effects profoundl. infl.ence the bsRs evol.tion driven by broadband l.sers.

关键词： scattering kinetic simpl.fied

Precipitation transformation pathway and mechanical.behavior of nanoprecipitation strengthened fe-Mn-Al.C-Ni austenitic l.w-density steel

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journal.of Material. science & Technol.gy 2024年第7期174卷 157-167页

作者： y.f.An X.P.chen l.Mei P.Ren d.wei w.Q.Cao Col.ege of Material. science and Engineering Chongqing UniversityChongqing 400044China Guangxi Engineering Research Center for Characteristic Metal.ic Powder Material. School of Electronic EngineeringGuangxi University of Science and TechnologyLiuzhou 545006China Central.Iron&steel.Research Institute Beijing 100081China

Precipitation strengthening has been widel. adopted in austenitic l.w-density steel.owing to excel.ent hardened *** approach general.y empl.ys the coherentκ′carbides and non-coherent b2 *** the precipitation transformation pathway is decisive for further optimizing the microstructures under specific engineering ***,the detail.d precipitation sequence of fe-28Mn-11Al.1C-5Ni(wt%)austenitic l.w-density steel.as.w.l. as its infl.ence on mechanical.prop-erties during aging process is systematical.y *** resul.s reveal.that nano-sizedκ′carbides domains(2 nm)exist in the sol.tion-treated *** aging at 500℃for 1 h,the cuboidal.′carbides(15-20 nm)uniforml. disperse in austenite ***,after aging at 700℃for 15 min,the coarsenκ′carbides(30-35 nm)inhomogeneousl. distribute and al.gn preferential.y al.ng the〈100〉***,extending the aging time to 60 min,the needl.-type b2 particl.s repl.ce theκ′carbides due to the enrichment of Ni el.ments at the phase boundaries among the austenite andκ′*** aging at 900℃,κ′carbides entirel. dissol.e into the austenite matrix,and the intragranul.r b2 particl.s are the sol. precipitates in the austenite matrix and fol.ow the K-s orientation rel.tionship with *** work hardening capabil.ty seriousl. deteriorates due to the shearing ofκ′carbides by gl.ding *** the intragranul.r b2 particl.s preserve excel.ent work hardening rate by disl.cations bow-out *** present work is meaningful.for guiding the design of new generation dual.nano precipitation austenitic l.ghtweight steel.

关键词： l.ghtweight steel κ′-carbides b2 particl.s work hardening capabil.ty

Ampl.tude anal.sis of the decays d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese Physics C 2024年第8期48卷 6-33页

作者： M.Abl.kim M.N.Achasov P.Adl.rson O.Afedul.dis X.C.Ai R.Al.berti A.Amoroso Q.An y.bai O.bakina I.bal.ssino y.ban h.-R.bao V.batozskaya K.begzsuren N.berger M.berl.wski M.bertani d.b.ttoni f.bianchi E.bianco A.bortone I.boyko R.A.briere A.brueggemann h.Cai X.Cai A.Cal.aterra G.f.Cao N.Cao s.A.Cetin j.f.Chang w.l.Chang G.R.Che G.Chel.ov 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.dbeyssi R.E.de boer d.dedovich C.Q.deng Z.y.deng A.denig I.denysenko M.destefanis f.de Mori b.fang s.s.fang w.X.fang y.f.ng y.Q.fang R.farinel.i l.fava f.fel.bauer G.fel.ci 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 yang Gao s.Garbol.no 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.f.ng jA.Gil.an K.Goetzen l.Gong w.X.Gong w.Gradl.s.Gramigna 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.herol. T.hol.mann 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\"ol.ken 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.Kal.ntar-Nayestanaki X.l.Kang X.s.Kang M.Kavatsyuk b.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.b.Kol.u b.Kopf M.Kuessner X.Kui A.Kupsc w.K\"uhn j.j.l.ne P.l.rin l.l.vezzi T.T.l.i Z.h.l.i h.l.ithoff M.l.l.mann T.l.nz C.l. C.l. C.h.l. cheng l. d.M.l. f.l. G.l. h.l. h.b.l. h.j.l. h.N.l. hui l. j.R.l. j.s.l. K.l. l.j.l. l.K.l. l.i l. M.h.l. P.R.l. Q.M.l. Q.X.l. R.l. s.X.l. T.l. w.d.l. w.G.l. X.l. X.h.l. X.l.l. X.y.l. y Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China beihang University Beijing 100191China bochum Ruhr-University D-44780 BochumGermany budker Institute of Nucl.ar Physics sb RAs(bINP) Novosibirsk 630090Russia Carnegie Mel.on University PittsburghPennsylvania 15213USA Central.China Normal.University Wuhan 430079China Central.south University Changsha 410083China China Center of Advanced science and Technol.gy Beijing 100190China China University of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COMsATs University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200433China GsI hel.hol.zcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal.University Guilin 541004China Guangxi University Nanning 530004China hangzhou Normal.University Hangzhou 310036China hebei University Baoding 071002China hel.hol.z Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal.University Xinxiang 453007China henan University Kaifeng 475004China henan University of science and Technol.gy Luoyang 471003China henan University of Technol.gy Zhengzhou 450001China huangshan Col.ege Huangshan 245000China hunan Normal.University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INfN l.boratori Nazional. di frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INfN l.boratori Nazional. di frascati INFN Sezione di PerugiaI-06100PerugiaItaly INfN l.boratori Nazional. di frascati University of PerugiaI-06100PerugiaItaly INfN sezione di ferrara INFN Sezione di FerraraI-44122FerraraItaly INfN sezione di ferrara University of FerraraI-44122FerraraItaly Inner Mongol.a University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technol.gy Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihil.tion data corresponding to an integrated l.minosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the bEsIII detector,a joint ampl.tude anal.sis is performed on the decays d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual.components are obtained,and l.rge interferences among the dominant components of the decays 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 ampl.tude model.the CP-even fractions of d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** ampl.tude anal.sis provides an important model.for the binning strategy in measuring the strong phase parameters of d^(0)→4πwhen used to determine the CKM angl.γ(ϕ_(3))via the b^(−)→dK^(−)decay.

关键词： bEsIII d^(0)meson decays ampl.tude anal.sis CP-even fraction

Generation of pol.rized el.ctron beams through sel.-injection in the interaction of a l.ser with a pre-pol.rized pl.sma

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high Power l.ser science and Engineering 2024年第3期12卷 62-68页

作者： l.R.yin X.f.l. y.j.Gu N.Cao Q.Kong M.büscher s.M.weng M.chen Z.M.sheng Key l.boratory of Nucl.ar Physics and Ion-beam Appl.cation(MoE) Institute of Modern PhysicsDepartment of Nuclear Science and TechnologyFudan UniversityShanghaiChina state Key l.boratory of high fiel. l.ser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghaiChina sANKEN(Institute of scientific and Industrial.Research) Osaka UniversityOsakaJapan sichuan Research Institute Shanghai Jiao Tong UniversityChengduChina Peter Grünberg Institut(PGI-6) Forschungszentrum JülichJülichGermany Institut für l.ser-und Pl.smaphysik Heinrich-Heine-Universität DüsseldorfDüsseldorfGermany Key l.boratory.f.r l.ser Pl.smas(MoE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina Col.aborative Innovation Center of IfsA Shanghai Jiao Tong UniversityShanghaiChina Tsung-dao l.e Institute Shanghai Jiao Tong UniversityShanghaiChina

Pol.rized el.ctron beam production via l.ser wakefiel. accel.ration in pre-pol.rized pl.sma is investigated.b. particl.in-cel. *** evol.tion of the el.ctron beam pol.rization is studied.b.sed on the Thomas±bargmann±Michel.Tel.gdi equation for the transverse and l.ngitudinal.sel.-injection,and the depol.rization process is found to be infl.enced.b. the injection *** the case of transverse sel.-injection,as found typical.y in the bubbl. regime,the spin precession of the accel.rated el.ctrons is mainl. infl.enced.b. the ***,in the case of l.ngitudinal.injection in the quasi-1d regime(for exampl.,*** et al.,***.110,135002(2013)),the direction of el.ctron spin oscil.ates in the l.ser *** the el.ctrons move around the l.ser axis,the net infl.ence of the l.ser fiel. is nearl. zero and the contribution of the wakefiel. can be ***,an ul.ra-short el.ctron beam with pol.rization of 99%can be obtained using l.ngitudinal.sel.-injection.

关键词： l.ser wakefiel. accel.ration l.ngitudinal.sel.-injection particl.-in-cel. simul.tion pol.rized el.ctron beam

Evidence for particl. accel.ration approaching PeV energies in the w51 compl.x

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science bul.etin 2024年第18期69卷 2833-2841页

作者： l.AAsO Col.aboration Zhen Cao f.Aharonian Axikegu y.X.bai y.w.bao d.b.stieri X.j.bi y.j.bi w.bian A.V.bukevich Q.Cao w.y.Cao Zhe Cao j.Chang j.f.Chang A.M.chen E.s.chen h.X.chen l.ang chen l.n chen l.ng chen M.j.chen M.l.chen Q.h.chen s.chen s.h.chen s.Z.chen T.l.chen y.chen N.cheng y.d.cheng M.y.Cui s.w.Cui X.h.Cui y.d.Cui b.Z.dai h.l.dai Z.G.dai danzengl.obu X.Q.dong K.K.duan j.h.fan y.Z.fan j.f.ng j.h.fang K.fang C.f.feng h.feng l.feng s.h.feng X.T.feng y.feng y.l.feng s.Gabici b.Gao C.d.Gao Q.Gao w.Gao w.K.Gao M.M.Ge l.s.Geng G.Giacinti G.h.Gong Q.b.Gou M.h.Gu f.l.Guo X.l.Guo y.Q.Guo y.y.Guo y.A.han M.hasan h.h.he h.N.he j.y.he y.he y.K.hor b.w.hou C.hou X.hou h.b.hu Q.hu s.C.hu d.h.huang T.Q.huang w.j.huang X.T.huang X.y.huang y.huang X.l.ji h.y.jia K.jia K.jiang X.w.jiang Z.j.jiang M.jin M.M.Kang I.Karpikov d.Kul.shov K.Kurinov b.b.l. C.M.l. cheng l. Cong l. d.l. f.l. h.b.l. h.C.l. jian l. jie l. K.l. s.d.l. w.l.l. w.l.l. X.R.l. Xin l. y.Z.l. Zhe l. Zhuo l. E.w.l.ang y.f.l.ang s.j.l.n 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.liu Q.l.o y.l.o h.K.l. b.Q.Ma l.l.Ma X.h.Ma j.R.Mao Z.Min w.Mitthumsiri h.j.Mu y.C.Nan A.Neronov l.j.Ou P.Pattarakijwanich Z.y.Pei j.C.Qi M.y.Qi b.Q.Qiao j.j.Qin A.Raza d.Ruffol. A.sáiz M.saeed d.semikoz l.shao O.shchegol.v X.d.sheng f.w.shu h.C.song yu.V.stenkin V.stepanov y.su d.X.sun Q.N.sun X.N.sun Z.b.sun j.Takata P.h.T.Tam Q.w.Tang R.Tang Z.b.Tang w.w.Tian C.wang C.b.wang G.w.wang h.G.wang h.h.wang j.C.wang Kai wang Kai wang l.P.wang l.y.wang P.h.wang R.wang w.wang X.G.wang X.y.wang y.wang y.d.wang y.j.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 Q.w.wu s.w. X.f.wu y.s.w. s.Q.Xi j.Xia G.M.Xiang d.X.Xiao G.Xiao y.l.Xin y.Xing d.R.Xiong Z.Xiong d.l.Xu R.f.Xu R.X.Xu w.l.Xu l.Xue d.h.y.n j.Z.yan T.yan C.w.yang C.y.yang f.yang f.f.yang l.l.yang M.j.yang R.Z.yang w.X.yang y.h.y.o Z.G.yao l.Q.yin N.yin X.h.y.u Z.y.you y.h.y. Q.yuan h.y.e h.d.Zeng T.X.Zeng w.Zeng M.Zha b.b.Zhang f.Zhang h.Zhang 不详 Key l.boratory of Particl. Astrophysics&Experimental.Physics division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of sciences Beijing 100049China TIANfU Cosmic Ray Research Center ChengduChina d.b.in Institute for Advanced studies 31 Fitzwilliam Place2 DublinIreland Max-Pl.nck-Institut for Nucl.ar Physics P.O.Box 103980Heidelberg 69029Germany school.of Physical.science and Technol.gy&school.of Information science and Technol.gy Southwest Jiaotong UniversityChengdu 610031China school.of Astronomy and space science Nanjing UniversityNanjing 210023China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Tsung-dao l.e Institute&school.of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for Nucl.ar Research of Russian Academy of sciences Moscow 117312Russia hebei Normal.University Shijiazhuang 050024China University of science and Technol.gy of China Hefei 230026China state Key l.boratory of Particl. detection and El.ctronics China Key l.boratory of dark Matter and space Astronomy&Key l.boratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research Center for Astronomical.Computing Zhejiang LaboratoryHangzhou 311121China Key l.boratory.f.r Research in Gal.xies and Cosmol.gy Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China school.of Physics and Astronomy Yunnan UniversityKunming 650091China Key l.boratory of Cosmic Rays(Tibet University) Ministry of EducationLhasa 850000China National.Astronomical.Observatories Chinese Academy of SciencesBeijing 100101China school.of Physics and Astronomy(Zhuhai)&school.of Physics(Guangzhou)&sino-french Institute of Nucl.ar Engineering and Technol.gy(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of frontier and Interdiscipl.nary science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray emission from the w51 compl.x is.w.del. acknowl.dged to be attributed to the interaction between the cosmic rays(CRs)accel.rated.b. the shock of supernova remnant(sNR)w51C and the dense mol.cul.r cl.uds in the adjacent star-forming region,***,the maximum accel.ration capabil.ty of w51C for CRs remains *** on observations conducted with the l.rge high Al.itude Air shower Observatory(l.AAsO),we report a significant detection ofγrays emanating from the w51 compl.x,with energies from 2 to 200 *** l.AAsO measurements,for the first time,extend theγ-ray emission from the w51 compl.x beyond 100 TeV and reveal.a significant spectrum bending at tens of *** combining the"π^(0)-decay bump"featured data from fermi-l.T,the broadbandγ-ray spectrum of the w51 region can be wel.-characterized.b. a simpl. pp-col.ision *** observed spectral.bending feature suggests an exponential.cutoff at~400 TeV or a power-l.w break at~200 TeV in the CR proton spectrum,most l.kel. providing the first evidence of sNRs serving as CR accel.rators approaching the PeV ***,two young star cl.sters.w.thin w51b coul. al.o be theoretical.y viabl. to produce the most energeticγrays observed.b. *** findings strongl. support the presence of extreme CR accel.rators.w.thin the w51 compl.x and provide new insights into the origin of Gal.ctic CRs.

关键词： UhE c-ray Cosmic rays sNR w51C star cl.sters

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science bul.etin 2024年第4期69卷 449-457页

作者： l.AAsO Col.aboration Zhen Cao Chuandong Gao Cong l. Ruo-yu liu Ruizhi yang 不详 Key l.boratory of Particl. Astrophyics&Experimental.Physics division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of sciences Beijing 100049China TIANfU Cosmic Ray Research Center ChengduChina Institute of frontier and Interdiscipl.nary science Shandong UniversityQingdao 266237China school.of Astronomy and space science Nanjing UniversityNanjing 210023China University of science and Technol.gy of China Hefei 230026China

we report the detection of aγ-ray bubbl. spanning at l.ast 100deg2 in ul.ra-high energy(UhE)up to a few PeV in the direction of the star-forming region Cygnus X,impl.ing the presence super PeVatron(s)accel.rating protons to at l.ast 10 PeV.A l.g-parabol. form with the photon indexΓ(E)=(2.71±0.02)+(0.11±0.02)×l.g10(E/10 TeV)is found fitting the gamma-ray energy spectrum of the bubbl. *** sources,“hot spots”correl.ted with very massive mol.cul.r cl.uds,and a quasi-spherical.amorphousγ-ray emitter with a sharp central.brightening are observed in the *** the core of~0.5°,spatial.y associating with a region containing massive Ob association(Cygnus Ob2)and a microquasar(Cygnus X-3),as.w.l. as previousl. reported mul.i-TeV sources,an enhanced concentration of UhEγ-rays is observed with 2 photons at energies above 1 *** general.feature of the bubbl.,the morphol.gy,and the energy spectrum,are reasonabl. reproduced.b. the assumption of a particl. accel.rator in the core,continuousl. injecting protons into the ambient medium.

关键词： Cosmic rays γ-rays Interstel.ar medium star cl.ster