| Ca和Sr原子n′dnl自电离态在低电场中的线性Stark效应 |
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| 引用本文： | 张森,邱济真,梅式民,陈星.Ca和Sr原子n′dnl自电离态在低电场中的线性Stark效应[J].物理学报,1990,39(8):32-37. |
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| 作者姓名： | 张森 邱济真 梅式民 陈星 |
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| 作者单位： | 浙江大学物理系,杭州,310027 |
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| 摘 要： | 用激光多步激发技术观察了Ca和Sr原子n′dnl双电子激发自电离态的电场效应。Stark光谱显示,在F<1/3n5的低电场中,Stark能级分裂与外电场强度线性相关。也观察了近简并l亚能级的Stark混合使自电离共振谱线在外电场中的增宽。这一效应在高温等离子体中对双电子复合速率的增加起重要作用。
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| 收稿时间： | 1989-09-26 |
LINEAR STARK EFFECT OF THE n′dnl AUTOIONIZATION STATES OF Ca AND Sr ATOMS IN THE LOW-FIELD REGION |
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| ZHANG SEN,QIU JI-ZHEN,MEI SHI-MIN and CHEN XING.LINEAR STARK EFFECT OF THE n′dnl AUTOIONIZATION STATES OF Ca AND Sr ATOMS IN THE LOW-FIELD REGION[J].Acta Physica Sinica,1990,39(8):32-37. |
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| Authors: | ZHANG SEN QIU JI-ZHEN MEI SHI-MIN and CHEN XING |
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| Abstract: | The electric field effect on the 3dnl and 4dnl doubly excited autoionization states of Ca and Sr atoms have been observed using a multisiep laser excitation technique. The Stark spectra show that splittings of the Stark levels are linearly dependent on the applied electric field in the lowfield region of F5. We have observed also that the autoionization resonance broadens with increasing electric field because of field-induced mixing of nearly degenerate 1 substates, which can play important role for increase of dielectronic recombination rate in plasmas. |
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