Observing the ping-pong modality of the isospin degree of freedom in cluster emission from heavy-ion reactions
Observing the ping-pong modality of the isospin degree of freedom in cluster emission from heavy-ion reactions
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DOI：
10.1103/physrevc.107.l041601
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发表时间：
2022-09
影响因子：
3.1
通讯作者：
Yijie Wang;F. Guan;Xin-Yue Diao;Mengting Wan;Yuhao Qin;Zhi Qin;Qianghua Wu;Dong Guo;
中科院分区：
文献类型：
--
作者：
Yijie Wang;F. Guan;Xin-Yue Diao;Mengting Wan;Yuhao Qin;Zhi Qin;Qianghua Wu;Dong Guo;
Two-body correlations of the isotope-resolved light and heavy clusters are measured in $^{86}$Kr+$^{\rm 208}$Pb reactions at 25 MeV/u. The yield and kinetic variables of the $A=3$ isobars, triton and $^3$He, are analyzed in coincidence with the heavy clusters of $7\le A \le 14$ emitted at the earlier chance. While the velocity spectra of both triton and $^3$He exhibit scaling behavior over the type of the heavy clusters, the yield ratios of ${\rm t/^3He}$ correlate reversely to the neutron-to-proton ratio $N/Z$ of the latter, showing the ping-pong modality of the $N/Z$ of emitted clusters. The commonality that the $N/Z$ of the residues keeps the initial system value is extended to the cluster emission in heavy ion reactions. The comparison of transport model calculations to the data is discussed.
