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Four α correlations in nuclear fragmentation: a game of resonances

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摘要 Heavy ion collisions near the Fermi energy produce a‘freezout’region where fragments appear and later decay,emitting mainly neutrons,protons,alpha particles,and gamma rays.These decay products carry information about the decaying nuclei.Fragmentation events may result in high yields of boson particles,especially alpha particles,and may carry important information about the nuclear Bose Einstein condensate(BEC).We study‘in medium’fourαcorrelations and link them to the‘fission’of 16O in two 8Be in the ground state or 12C*(Hoyle state)+α.Using novel techniques for the correlation functions,we confirm the resonance of 16O at 15.2 MeV excitation energy,and the possibility of a lower resonance,close to 14.72 MeV.The latter resonance is the result of allαparticles having 92 keV relative kinetic energies.
作者 M.Huang A.Bonasera S.Zhang H.Zheng D.X.Wang J.C.Wang N.Song X.Tang L.Lu G.Zhang Z.Kohley M.R.D.Rodrigues Y.G.Ma S.J.Yennello 黄美容;A.Bonasera;张苏雅拉吐;郑华;王德鑫;王金成;宋娜;唐鑫;立立;张国强;Z.Kohley;M.R.D.Rodrigues;马余刚;S.J.Yennello(College of Mathematics and Physics,Inner Mongolia University for Nationalities,Tongliao 028000,China;Institute of Nuclear Physics,Inner Mongolia University for Nationalities,Tongliao 028000,China;Cyclotron Institute,Texas A&M University,College Station,TX 77843,USA;Laboratori Nazionali del Sud,INFN,via Santa Sofia,62,95123 Catania,Italy;School of Physics and Information Technology,Shaanxi Normal University,Xi'an 710119,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China;Chemistry Department,Texas A&M University,College Station,TX 77843,USA;Key Laboratory of Nuclear Physics and Ion-beam Application(MOE),Institute of Modern Physics,Fudan University,Shanghai 200433,China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China)
出处 《Chinese Physics C》 SCIE CAS CSCD 2021年第2期406-413,共8页 中国物理C(英文版)
基金 Supported by the National Natural Science Foundation of China(11765014,11865010,11905120,I1605097,U2032146,11421505) the Robert A.Welch Founda-tion(A-1266) the US Department of Energy(DE-FG02-93ER40773) Natural Science Foundation of Inner Mongolia(2018MS01009,20191001) the Chinese Academy of Sciences(CAS)President's International Fellowship Initiative(2015VW A070) the Strategic Priority Research Program of the Chinese Academy of Sci-ences(XDB16,XDPB09) the Program for Young Talents of Science and Technology in Univrities of Inmer Mongolia Autonomous Region(NJYT-18-B21) the Doctoral Seientifie Research Foundation of Inner Mongolia University for Nationalities(BS365.BS400) The Fundamental Research Funds for the Central University(GK201903022)。
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