EVOLUTION OF BARIUM AUTOIONIZING STARK SPECTRA WITH ENERGY AND FIELD

被引：27

作者：

ARMSTRONG, DJ

GREENE, CH

机构：

[1] UNIV COLORADO, DEPT PHYS, BOULDER, CO 80309 USA

[2] UNIV COLORADO, JOINT INST LAB ASTROPHYS, BOULDER, CO 80309 USA

来源：

PHYSICAL REVIEW A | 1994年 / 50卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.50.4956

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Extensive calculations and measurements of barium autoionizing Stark spectra below the 5d ionization thresholds are presented. The theoretical description is based on a combination of R-matrix calculations in zero external field and a Harmin-Fano-type field-dependent frame transformation. In addition to verifying the basic validity of this approximation scheme, we examine the scaling of calculated resonance linewidths with energy. Under certain circumstances, the average linewidths are found to scale approximately as -4, with the relevant effective quantum number. Extreme departures from this scaling are observed for individual resonances, however, which could be important for the theoretical description of other processes in an electric field, such as dielectronic recombination. © 1994 The American Physical Society.

引用

页码：4956 / 4974

页数：19

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