Ionization cross section measurements for autoionizing states of iridium and rhenium
Ionization cross section measurements for autoionizing states of iridium and rhenium
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铱和铼自电离态的电离截面测量
DOI：
10.1088/0953-4075/47/7/075201
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Wada M
中科院分区：
文献类型：
--
作者：
Hirayama Y.;Mukai M.;Watanabe Y.;Imai N.;Ishiyama H.;Jeong S.-C.;Miyatake H.;Oyaizu M.;Matsuo Y.;Sonoda T.;Wada M
利用双色两步激光共振电离技术，在第一电离极限附近的连续谱结构中观察到中性铱和铱原子的新的自电离态。测量了自电离态的饱和曲线，并通过求解基态、中间态和自电离态粒子数的速率方程实验确定了电离截面。有效的电离方案，预计将是有用的应用，如激光离子源的不稳定核。
New autoionizing states for neutral iridium and rhenium atoms were observed in the continuum structure near the first ionization limit by using a two-colour two-step laser resonance ionization technique. The saturation curves for the autoionizing states were measured, and the ionization cross sections were experimentally determined by solving the rate equations for the ground, intermediate, and autoionizing state populations. Efficient ionization schemes are expected to be useful for applications such as laser ion sources of unstable nuclei.