Multi-layer phenomena in petawatt laser-driven acceleration of heavy ions  

作　　者：苏琬晴 曹喜光 马春旺 王玉廷 张国强 Wanqing SU;Xiguang CAO;Chunwang MA;Yuting WANG;Guoqiang ZHANG(College of Physics,Henan Normal University,Xinxiang 453007,People's Republic of China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,People's Republic of China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,People's Republic of China;University of Chinese Academy of Sciences,Bejing 100049,People's Republic of China;Institute of Nuclear Science and Technology,Henan Academy of Science,Zhengzhou 450046,People's Republic of China)

机构地区：[1]College of Physics,Henan Normal University,Xinxiang 453007,People's Republic of China [2]Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,People's Republic of China [3]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,People's Republic of China [4]University of Chinese Academy of Sciences,Bejing 100049,People's Republic of China [5]Institute of Nuclear Science and Technology,Henan Academy of Science,Zhengzhou 450046,People's Republic of China

出　　处：《Plasma Science and Technology》2024年第2期70-76,共7页等离子体科学和技术（英文版）

基　　金：support from the Strategic Priority Research Program of the Chinese Academy of Sciences (No.XDB34030000);the National Key R & D Program of China (No.2022YFA1602404);National Natural Science Foundation of China (No. U1832129);the Youth Innovation Promotion Association of the Chinese Academy of Sciences (No.2017309);the Program for Innovative Research Team (in Science and Technology) in University of Henan Province of China (No.21IRTSTHN011)。

摘　　要：Laser-accelerated high-flux-intensity heavy-ion beams are important for new types of accelerators.A particle-in-cell program(Smilei) is employed to simulate the entire process of Station of Extreme Light(SEL) 100 PW laser-accelerated heavy particles using different nanoscale short targets with a thickness of 100 nm Cr, Fe, Ag, Ta, Au, Pb, Th and U, as well as 200 nm thick Al and Ca. An obvious stratification is observed in the simulation. The layering phenomenon is a hybrid acceleration mechanism reflecting target normal sheath acceleration and radiation pressure acceleration, and this phenomenon is understood from the simulated energy spectrum,ionization and spatial electric field distribution. According to the stratification, it is suggested that high-quality heavy-ion beams could be expected for fusion reactions to synthesize superheavy nuclei. Two plasma clusters in the stratification are observed simultaneously, which suggest new techniques for plasma experiments as well as thinner metal targets in the precision machining process.

关 键 词：petawatt laser-plasma interaction laser-driven heavy-ion accelerator for synthesizing superheavy nuclei PARTICLE-IN-CELL multi-layer phenomena target fabrication 

分 类 号：TL50[核科学技术—核技术及应用] TN249[电子电信—物理电子学]