Simulation of nuclear isomer production in laser-induced plasma  

作　　者：Zhiguo Ma Yumiao Wang Yi Yang Youjing Wang Kai Zhao Yixin Li Changbo Fu Wanbing He Yugang Ma 

机构地区：[1]Key Laboratory of Nuclear Physics and Ion-Beam Application(MoE),Institute of Modern Physics,Fudan University,Shanghai 200433,China

出　　处：《Matter and Radiation at Extremes》2024年第5期1-9,共9页极端条件下的物质与辐射（英文）

基　　金：supported by the National Key Research and Development Program of China(NKPs)(Grant No.2023YFA1606900);the National Natural Science Foundation of China(NSFC)under Grant No.12235003.

摘　　要：Nuclear isomers play essential roles in various fields,including stellar nucleosynthesis,nuclear clocks,nuclear batteries,clean nuclear energy,and-ray lasers.Recent technological advances in high-intensity lasers have made it possible to excite or de-excite nuclear isomers using table-top laser equipment.Utilizing a particle-in-cell code,we investigate the interaction of a laser with a nanowire array and calculate the production rates of the^(73m)Ge(E_(1)=13.3 keV)and^(107m)Ag(E_(1)=93.1 keV)isomers.For^(73m1)Ge,production by Coulomb excitation is found to contribute a peak efficiency of 1.0×10^(19) particles s^(−1)J^(−1),while nuclear excitation by electron capture(NEEC)contributes a peak of 1.65×10^(11)particles s^(−1)J^(−1).These results indicate a high isomeric production ratio,as well as demonstrating the potential for confirming the existence of NEEC,a long-expected but so far experimentally unobserved fundamental process.

关 键 词：process. ISOMERS EXCITATION 

分 类 号：O53[理学—等离子体物理]