Multiple ionization state of Arq ions during collisions near the Bohr velocity
Multiple ionization state of Arq ions during collisions near the Bohr velocity
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Arq 离子在玻尔速度附近碰撞时的多重电离态
DOI：
10.1038/s41598-019-41709-w
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发表时间：
2019
影响因子：
4.6
通讯作者：
Xiao Guoqing
中科院分区：
文献类型：
--
作者：
Zhou Xianming;Cheng Rui;Zhao Yongtao;Wang Yuyu;Lei Yu;Chen Yanhong;Ma Xinwen;Xiao Guoqing
为了阐明Ar ~（q+）离子在玻尔速度附近碰撞产生L壳层多重电离态的机理以及初始电荷态和靶原子参数对形成的影响，测量了1.2MeV Ar ~（q+）离子的k壳层X射线发射（q=4，6，8，9，11，12）离子撞击V靶和3 MeV Ar 11+离子与选定靶（Z2= 23，26，27，28，29，30）相互作用。结果表明，由于壳外多空位的存在，Ar原子的Kα和Kβ x射线能量向高能方向移动，Kβ/Kα的相对强度比原子数据增大。多重电离几乎与入射粒子的电荷状态无关，但随着靶原子序数的增加而减小。
In order to clarify the mechanism and the influence of the initial charge state and target atomic parameters for the formation of L-shell multiple ionization state of Arq+ions produced by the collisions near the Bohr velocity, the k-shell x-ray emission of Ar is measured for 1.2 MeV Arq+(q=4, 6, 8, 9, 11, 12)ions impacting on V target and 3 MeV Ar11+ions interacting with selected targets (Z2= 23, 26, 27, 28, 29, 30). It is found that the measured Ar Kα and Kβ x-ray energies shift to the high energy side, and the relative intensity ratios of Kβ/Kα are enlarged than the atomic data, owing to the presence of out-shell multiple vacancies. The multiple ionization is almost independence of the projectile charge state, but is diminished with increasing target atomic number.