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Astrody.amics 2024年第2期8卷 271-284页

作者： Chonggang Du zheng h.zhu Changqing Wang Aijun Li Tuanjie Li School of electro-Mechanical engineering Xidian UniversityXi’an 710071China Department of Mechanical engineering York University4700 Keele StreetTorontoOntario M3J 1P3Canada School of Automation Northwestern Polytechnical UniversityXi’an 710129China

This study.examines the impact of electric solar wind sail(e-sail)parameters on the attitude stability.of e-sail’s central spacecraft by.using a comprehensive rigid–flexible coupling dy.amic *** this model,the nodal position finite element method is used to model the elastic deformation of the tethers through interconnected two-node tensile *** attitude dy.amics of the central spacecraft is described using a natural coordinate *** rigid–flexible coupling between the central spacecraft and its flexible tethers is established using Lagrange *** research reveals the significant influences of parameters such as tether numbers,tether’s electric potential,and solar wind velocity.on attitude ***,solar wind fluctuations and the distribution of electric potential on the main tethers considerably.affect the attitude stability.of the *** consistent management,the angular velocities of the spacecraft must remain at target ***,the attitude stability.of a spacecraft has a pronounced dependence on the geometrical configuration of the e-sail,with axisy.metric e-sails proving to be more stable.

关键词： electric solar wind sail(e-sail) space tether nodal position finite element method(NPfeM) natural coordinate formulation (NCf) attitude stability

A Preliminary.Comparative Study.on the Centering Algorithms for CassiniISS NAC Images

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Research in Astronomy.and Astrophy.ics 2024年第10期24卷 58-65页

作者： T.Liang Q.-f.zhang G.-M.Liu W.-h.zhu C.-S.Wang Department of Computer Science Jinan UniversityGuangzhou 510632China Sino-french Joint Laboratory.for Astrometry Dynamics and Space ScienceJinan UniversityGuangzhou 510632China School of Computer Science Guangdong University of EducationGuangzhou 510303China

Obtaining high precision is an important consideration for astrometric studies using images from the Narrow Angle Camera(NAC)of the Cassini Imaging Science Subsy.tem(ISS).Selecting the best centering algorithm is key.to enhancing astrometric *** this study.we compared the accuracy.of five centering algorithms:Gaussian fitting,the modified moments method,and three point-spread function(PSf)fitting methods(effective PSf(ePSf),PSfex,and extended PSf(x PSf)from the Cassini Imaging Central Laboratory.for Operations(CICLOPS)).We assessed these algorithms using 70 ISS NAC star field images taken with CL1 and CL2 filters across different stellar *** ePSf method consistently.demonstrated the highest accuracy.achieving precision below 0.03 pixels for stars of magnitude *** to the previously.considered best,the modified moments method,the e PSf method improved overall accuracy.by.about 10%and 21%in the sample and line directions,***,the xPSf model provided by.CICLOPS had lower precision than the ***,the ePSf exhibits an improvement in measurement precision of 23%and 17%in the sample and line directions,respectively.over the *** discrepancy.might be attributed to the xPSf focusing on photometry.rather than *** findings highlight the necessity.of constructing PSf models specifically.tailored for astrometric purposes in NAC images and provide guidance for enhancing astrometric measurements using these ISS NAC images.

关键词： methods:analy.ical techniques:image processing stars:imaging astrometry

fast efficient photon deceleration in plasmas by.using two laser pulses at different frequencies

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Matter and Radiation at extremes 2024年第3期9卷 11-18页

作者： y.X.Wang X.L.zhu S.M.Weng P.Li X.f.Li h.Ai h.R.Pan z.M.Sheng Key.Laboratory.for Laser Plasmas(moe) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IfSA Shanghai Jiao Tong UniversityShanghai 200240China Research Center of Laser fusion of China Academy.of engineering Phy.ics MianyangSichuan 621900China State key.Laboratory.of high field Laser Phy.ics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Tsung-dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China

The generation of ultrashort high-power light sources in the mid-infrared(mid-IR)to terahertz(Thz)range is of interest for applications in a number of fields,from fundamental research to biology.and *** conventional laser technology.photon deceleration in plasma wakes provides an alternative approach to the generation of ultrashort mid-IR or Thz ***,we present a photon deceleration scheme for the efficient generation of ultrashort mid-IR or Thz pulses by.using an intense driver laser pulse with a relatively.short wavelength and a signal laser pulse with a relatively.long *** signal pulse trails the driver pulse with an appropriate time delay.such that it sits at the front of the second wake bubble that is driven by.the driver *** to its relatively.long wavelength,the signal pulse will be subjected to a large gradient of the refractive index in the plasma wake ***,the photon deceleration in the plasma wake becomes faster and more efficient for signal pulses with longer *** greatly.enhances the capacity.and efficiency.of photon deceleration in the generation of ultrashort high-power light sources in the long-wavelength IR and Thz spectral ranges.

关键词： laser ultrashort photon

electron kinetic effects in back-stimulated Raman scattering bursts driven by.broadband laser pulses

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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 Applied Phy.ics and Computational Mathematics Beijing 100094China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Shanghai Institute of Laser Plasma Shanghai 201800China heDPS Center for Applied Physics and TechnologyPeking UniversityBeijing 100871China School of Phy.ics Zhejiang UniversityHangzhou 310027China

We examine electron kinetic effects in broadband-laser-driven back-stimulated Raman scattering(BSRS)bursts using particle-in-cell *** bursts occur during the nonlinear stage,causing reflectivity.spikes and generating large numbers of hot ***-duration simulations are performed to observe burst events,and a simplified model is developed to eliminate the interference of the broadband laser’s random intensity.*** the simplified model,we isolate and characterize the spectrum of electron plasma *** spectrum changes from a sideband structure to a turbulence-like structure during the burst.A significant asy.metry.in the spectrum is *** asy.metry.is amplified and transferred to electron phase space by.high-intensity.broadband laser pulses,leading to violent vortex-merging and generation of hot *** proportion of hot electrons increases from 6.76%to 14.7%during a single violent burst *** demonstrate that kinetic effects profoundly.influence the BSRS evolution driven by.broadband lasers.

关键词： scattering kinetic simplified

STCf conceptual design report (Volume 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.Bogomy.gkov 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.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.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.Ma P.Ma y.Ma y.M.Ma f.Maas S.Malde D.Matvienko z.X.Meng R.Mitchell A.Nefediev y.Nefedov S.L.Olsen Q.Ouy.ng 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.Py.ta 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 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 Normal University Wuhan 430079China Central South University Changsha 410083China China University.of Geosciences Wuhan 430074China China University.of Mining and Technology Xuzhou 221116China École Poly.echnique 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 Advanced Study UCASHangzhou 310024China hebei Normal University Shijiazhuang 050024China hebei University Baoding 071002China hefei University.of Technology Hefei 230601China helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University Kaifeng 475004China high energy.Phy.ics Center Chung-Ang UniversitySeoul 06974Korea higher School of economy.11 Pokrovsky.Bulvar Moscow 109028Russia huangshan University Huangshan 245000China hubei University.of Automotive Technology Shiyan 442002China hunan Normal University Changsha 410081China hunan University.of Science and Technology Xiangtan 411201China hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science facilities Shenzhen 518107China Institute of high energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Institute of Modern 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-mass energy.range from 2 to 7 GeV with a peak luminosity.of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCf will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory.the BePCII,providing a unique platform for exploring the asy.metry.of matter-antimatter(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 exotic hadrons and phy.ics bey.nd the Standard *** STCf project in China is under development with an extensive R&D *** document 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 luminosity STCf detector conceptual design

Microstructures of Thermomechanically.Treated eutectoid zn-Al Alloy

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Journal of Materials Science & Technology 1994年第2期10卷 121-126页

作者： y. h.zhu(Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico, Mexico City. Mexico) f.e.goodwin (Addressed: Instituto de Investigaciones en Materiales, UNAM, Apdo. P70-360, Mexico D.f.04510, Mexico) (international lead and z Universidad Nacional Autonoma de Mexico Mexico City Mexico

A continuously.cast eutectoid zn-Al alloy.was extruded at about 250℃ and the complex microstructures of three phases (α. ε and η'e) were observed in the extruded eutectoid zn-Al *** fcc Al-rich α phase appeared as isolated particles with clear boundaries instead of the α phase occurring with diffuse boundary.within the dendrites of the as-cast structure. A new unstable phase η'e was determined to have hexagonal close packed cry.tal structure. The decomposed β's, phase comprised the matrix. The new phase η'e decompoeed and a four phase transformation α+ε T'+η occurred afterwards during the isothermal holding. The extruded alloy.tended to be stable after these two phase transformations. The early.shrinkage and the following increase in dimension were related to the decomposition of the new phase η'e and the four phase transformation.

关键词： zn Al Microstructures of Thermomechanically.Treated eutectoid zn-Al Alloy Met

Amplitude 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.Amoroso 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.Brueggemann 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 Mori 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.Gilman 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.herold T.holtmann 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.Lellmann 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 Mellon University PittsburghPennsylvania 15213USA Central China Normal 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 COMSATS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200433China GSI helmholtzcentre 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 helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal 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 Normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology.Madras 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 Mongolia University Hohhot 010021China Institute of Modern 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 luminosity.of 2.93 fb^(−1)taken at the center-of-mass energy.s=3.773 GeV with the BeSIII detector,a joint amplitude analy.is is performed 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 components are obtained,and large interferences among the dominant components 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 amplitude 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_(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 measured to be(0.688±0.010_(stat.)±0.010_(sy.t.))%and(0.951±0.025_(stat.)±0.021_(sy.t.))%,*** amplitude analy.is provides an important model for the binning strategy.in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BeSIII D^(0)meson decay. amplitude analy.is CP-even fraction

Determination of the number ofψ(3686)events taken at BeSⅢ

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Chinese Phy.ics C 2024年第9期48卷 8-20页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso 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.Brueggemann h.Cai X.Cai A.Calcaterra G.f.Cao N.Cao S.A.Cetin J.f.Chang G.R.Che G.Chelkov C.Chen C.h.Chen Chao Chen G.Chen h.S.Chen h.y.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 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 Mori 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 y.y.Duan z.h.Duan P.egorov y.h.fan J.fang J.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 M.fritsch C.D.fu J.L.fu y.W.fu h.Gao X.B.Gao y.N.Gao y.ng Gao S.Garbolino I.Garzia L.Ge P.T.Ge z.W.Ge C.Geng e.M.Gersabeck A.Gilman 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 f.hanisch X.Q.hao f.A.harris K.K.he K.L.he f.h.heinsius C.h.heinz y.K.heng C.herold T.holtmann P.C.hong G.y.hou X.T.hou y.R.hou z.L.hou B.y.hu h.M.hu J.f.hu S.L.hu T.hu y.hu G.S.huang K.X.huang L.Q.huang X.T.huang y.P.huang T.hussain f.hölzken N.hüsken N.in der Wiesche 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 N.Kumar A.Kupsc W.Kühn J.J.Lane P.Larin L.Lavezzi T.T.Lei z.h.Lei M.Lellmann T.Lenz C.Li C.Li C.h.Li Cheng Li D.M.Li f.Li G.Li h.B.Li h.J.Li h.N.Li hui Li J.R.Li J.S.Li Ke 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.z.Li Xi Institute of high energy.Phy.ics Beijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780BochumGermany Budker Institute of Nuclear Phy.ics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal 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 COMSATS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan fudan University Shanghai 200433China GSI helmholtzcentre for heavy.Ion Research Gmbh D-64291DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou Normal University Hangzhou 310036China hebei University Baoding 071002China helmholtz Institute Mainz Staudinger Weg 18D-55099MainzGermany henan Normal 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 Normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology.Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INfN Laboratori Nazionali di frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly INfN Sezione di ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile Jilin University Changchun 130012China Joha

The number ofψ(3686)events collected by.the BeSⅢdetector during the 2021 run period is determined to be(2259.3±11.1)×10~6 by.counting inclusiveψ(3686)hadronic *** uncertainty.is sy.tematic and the statistical uncertainty.is ***,the numbers ofψ(3686)events collected during the 2009 and 2012run periods are updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one standard *** total number ofψ(3686)events in the three data samples is(2712.4±14.3)×10~6.

关键词： ψ(3686) inclusive process hadronic events BeSⅢdetector

evidence for particle acceleration approaching PeV energies in the W51 complex

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

作者： LhAASO Collaboration zhen Cao f.Aharonian Axikegu y.X.Bai y.W.Bao D.Bastieri 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 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.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 Danzengluobu X.Q.Dong K.K.Duan J.h.fan y.z.fan J.fang 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.Kuleshov K.Kurinov 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 W.L.Li X.R.Li Xin Li y.z.Li zhe Li zhuo Li e.W.Liang y.f.Liang S.J.Lin 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.Luo y.Luo h.K.Lv 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.Ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng f.W.Shu h.C.Song y..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.Wu X.f.Wu y.S.Wu 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.y.n T.y.n C.W.y.ng C.y.y.ng f.y.ng f.f.y.ng L.L.y.ng M.J.y.ng R.z.y.ng W.X.y.ng y.h.y.o z.G.y.o L.Q.y.n N.y.n X.h.y.u z.y.y.u y.h.y. Q.y.an h.y.e h.D.zeng T.X.zeng W.zeng M.zha B.B.zhang f.zhang h.zhang 不详 Key.Laboratory.of Particle Astrophy.ics&experimental Phy.ics 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 Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Phy.ics P.O.Box 103980Heidelberg 69029Germany School of Phy.ical Science and Technology.School of Information Science and Technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy.and Space Science Nanjing UniversityNanjing 210023China Center for Astrophy.ics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee Institute&School of Phy.ics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for Nuclear Research of Russian Academy.of Sciences Moscow 117312Russia hebei Normal University Shijiazhuang 050024China University.of Science and Technology.of China Hefei 230026China State Key.Laboratory.of Particle Detection and electronics China Key.Laboratory.of Dark Matter and Space Astronomy.Key.Laboratory.of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key.Laboratory.for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of Phy.ics and Astronomy Yunnan UniversityKunming 650091China Key.Laboratory.of Cosmic Ray.(Tibet University. Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Phy.ics and Astronomy.zhuhai)&School of Phy.ics(Guangzhou)&Sino-french Institute of Nuclear engineering and Technology.zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of frontier and Interdisciplinary.Science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray.emission from the W51 complex is widely.acknowledged to be attributed to the interaction between the cosmic ray.(CRs)accelerated by.the shock of supernova remnant(SNR)W51C and the dense molecular clouds in the adjacent star-forming region,***,the maximum acceleration capability.of W51C for CRs remains *** on observations conducted with the Large high Altitude Air Shower Observatory.LhAASO),we report a significant detection ofγray. emanating from the W51 complex,with energies from 2 to 200 *** LhAASO measurements,for the first time,extend theγ-ray.emission from the W51 complex bey.nd 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π^(0)-decay.bump"featured data from fermi-LAT,the broadbandγ-ray.spectrum of the W51 region can be well-characterized by.a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at~400 TeV or a power-law break at~200 TeV in the CR proton spectrum,most likely.providing the first evidence of SNRs serving as CR accelerators approaching the PeV ***,two y.ung star clusters within W51B could also be theoretically.viable to produce the most energeticγray. observed by.*** findings strongly.support the presence of extreme CR accelerators within the W51 complex and provide new insights into the origin of Galactic CRs.

关键词： Uhe c-ray Cosmic ray. SNR W51C Star clusters

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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&experimental Phy.ics 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 Interdisciplinary.Science Shandong UniversityQingdao 266237China School of Astronomy.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-forming region Cy.nus X,imply.ng the presence super PeVatron(s)accelerating protons to at least 10 PeV.A log-parabola form with the photon indexΓ(e)=(2.71±0.02)+(0.11±0.02)×log10(e/10 TeV)is found fitting the gamma-ray.energy.spectrum of the bubble *** sources,“hot spots”correlated with very.massive molecular clouds,and a quasi-spherical amorphousγ-ray.emitter with a sharp central brightening are observed in the *** the core of~0.5°,spatially.associating with a region containing massive OB association(Cy.nus OB2)and a microquasar(Cy.nus X-3),as well as previously.reported multi-TeV sources,an enhanced concentration of Uheγ-ray. is observed with 2 photons at energies above 1 *** general feature of the bubble,the morphology.and the energy.spectrum,are reasonably.reproduced by.the assumption of a particle accelerator in the core,continuously.injecting protons into the ambient medium.

关键词： Cosmic ray. γ-ray. Interstellar medium Star cluster