碰撞离化在高强度激光脉冲驱动重离子加速中的作用。

The role of collisional ionization in heavy ion acceleration by high intensity laser pulses.

机构信息

Fakultät für Physik, Ludwig-Maximilians-Universität München, 85748, Garching bei München, Germany.

Department of Physics, University of Warwick, Coventry, CV4 7AL, UK.

出版信息

Sci Rep. 2022 Oct 29;12(1):18260. doi: 10.1038/s41598-022-23148-2.

DOI:10.1038/s41598-022-23148-2

PMID:36309599

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9617862/

Abstract

We present here simulation results of the laser-driven acceleration of gold ions using the EPOCH code. Recently, an experiment reported the acceleration of gold ions up to 7 MeV/nucleon with a strong dependency of the charge-state distribution on target thickness and the detection of the highest charge states [Formula: see text]. Our simulations using a developmental branch of EPOCH (4.18-Ionization) show that collisional ionization is the most important cause of charge states beyond Z = 51 up to He-like Au.

摘要

我们在此展示了使用 EPOCH 代码模拟激光驱动金离子加速的结果。最近，一项实验报告称，金离子被加速到 7 MeV/nucleon，其电荷态分布强烈依赖于靶厚度，并检测到最高的电荷态[公式：见正文]。我们使用 EPOCH 的一个发展分支（4.18-电离）的模拟表明，碰撞电离是产生 Z 大于 51 的电荷态直至类氦金的最重要原因。