Population distribution subsequent to charge exchange of 29.85 keV Ni+ on sodium vapor
Population distribution subsequent to charge exchange of 29.85 keV Ni+ on sodium vapor
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DOI：
10.1016/j.sab.2015.08.004
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发表时间：
2015-11
期刊：
影响因子：
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通讯作者：
C. Ryder;K. Minamisono;H. Asberry;B. Isherwood;P. Mantica;A. Miller;D. Rossi;R. Strum
中科院分区：
文献类型：
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作者：
C. Ryder;K. Minamisono;H. Asberry;B. Isherwood;P. Mantica;A. Miller;D. Rossi;R. Strum
本文研究了29.85 keV镍离子撞击钠蒸气后，镍I中低能亚稳态电荷交换反应和级联衰变的布居。用半经典的含时微扰理论计算了电荷交换截面，并模拟了粒子数通过快速自发衰变的再分布。共线激光光谱实验在Ni I的四条发射线上进行，以确定低能亚稳态的布居：3d94s3D3（204.787 cm− 1），3d94s3D2（879.816 cm− 1），3d94s3D1（1713.087 cm− 1）和3d94s1D2（3409.937 cm− 1）。公平的协议之间得到的模拟和实验结果。与Ni I中近共振高能态的弱布居相比，低能亚稳态在级联衰变后优先布居。
The population of low-energy metastable states in Ni I subsequent to charge-exchange reactions and cascade decay was studied for 29.85 keV Ni ions impinging on a sodium vapor. The charge-exchange cross sections were calculated using a semi-classic time-dependent perturbation theory and redistribution of the population via rapid spontaneous decays was simulated. Collinear laser spectroscopy experiments were performed on four emission lines in Ni I to determine populations in low-energy metastable states: 3d94s3D3(204.787 cm− 1), 3d94s3D2(879.816 cm− 1), 3d94s3D1(1713.087 cm− 1) and 3d94s1D2(3409.937 cm− 1). Fair agreement was obtained between the simulation and experimental results. The low-energy metastable states were preferentially populated after the cascade decay in contrast to weak populations in near-resonant high-energy states in Ni I.