Reconstruction of Fission Events in Heavy Ion Reactions with CSHINE

Subjects: Physics >> Nuclear Physics submitted time 2021-12-25

刁昕玥 关分海 王轶杰 秦雨浩 秦智 郭栋 吴强华 司大伟 赵暄 肖圣 张耀鹏 魏向伦 邹海川 杨贺润 马朋 胡荣江 段利敏 Artur, Dobrowolski Krzysztof, Pomorski 肖志刚

Abstract： We report the reconstruction method of the fast fission events in 25 MeV/u $^{86}$Kr +$^{208}$Pb reactions at the Compact Spectrometer for Heavy IoN Experiment (CSHINE). The fission fragments are measured by three large-area parallel plate avalanche counters, which can deliver the position and the arrival timing information of the fragments. The start timing information is given by the radio frequency of the cyclotron. Using the velocities of the two fission fragments, the fission events are reconstructed. The broadening of both the velocity distribution and the azimuthal difference of the fission fragments decrease with the folding angle, in accordance with the picture that fast fission occurs. The anisotropic angular distribution of the fission axis also reveals consistently the dynamic feature the fission events.

Peer Review Status:Awaiting Review

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