CONTRIBUTIONS OF RESONANT EXCITATION DOUBLE AUTOIONIZATION TO THE ELECTRON-IMPACT IONIZATION OF FE-15+

被引：65

作者：

CHEN, MH ^{[1
]}

REED, KJ ^{[1
]}

MOORES, DL ^{[1
]}

机构：

[1] AUBURN UNIV,DEPT PHYS,AUBURN,AL 36899

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.64.1350

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electron-impact ionization cross sections for Fe15+ have been calculated using relativitsic distorted-wave methods. We have performed the most comprehensive calculation to date by including more than 10 000 autoionizing levels for resonant-excitation double-autoionization (REDA) processes. The total cross sections exhibit many strong narrow resonances. The REDA process contributes about 30% to the average total cross sections. General good agreement between theory and experiment is attained, but new experimental investigations are needed to search for the predicted resonances. © 1990 The American Physical Society.

引用

收藏

页码：1350 / 1353

页数：4

相关论文

共 24 条

[1] RELATIVISTIC AUGER AND X-RAY-EMISSION RATES OF THE 1S2LN(2L')M CONFIGURATIONS OF BE-LIKE IONS [J].

CHEN, MH .

PHYSICAL REVIEW A, 1985, 31 (03) :1449-1451

[2] EFFECTIVE L-SHELL FLUORESCENCE YIELDS FOR SODIUM-LIKE AND NEONLIKE LOW-LYING AUTO-IONIZING STATES [J].

CHEN, MH .

PHYSICAL REVIEW A, 1989, 40 (05) :2758-2761

[3] CONTRIBUTION OF AUTO-IONIZATION TO TOTAL IONIZATION RATES [J].

COWAN, RD ;

MANN, JB .

ASTROPHYSICAL JOURNAL, 1979, 232 (03) :940-947

[4] ABSOLUTE CROSS-SECTION MEASUREMENTS FOR ELECTRON-IMPACT IONIZATION OF NA-LIKE IONS - MG+, AL2+, AND SI3+ [J].

CRANDALL, DH ;

PHANEUF, RA ;

FALK, RA ;

BELIC, DS ;

DUNN, GH .

PHYSICAL REVIEW A, 1982, 25 (01) :143-153

[5] EXCITATION-AUTOIONIZATION CONTRIBUTIONS TO ELECTRON-IMPACT IONIZATION [J].

FALK, RA ;

DUNN, GH ;

GRIFFIN, DC ;

BOTTCHER, C ;

GREGORY, DC ;

CRANDALL, DH ;

PINDZOLA, MS .

PHYSICAL REVIEW LETTERS, 1981, 47 (07) :494-497

[6] ABSOLUTE EXPERIMENTAL CROSS-SECTIONS FOR IONIZATION OF SINGLY CHARGED BARIUM IONS BY ELECTRON-IMPACT [J].

FEENEY, RK ;

ELFORD, MT ;

HOOPER, JW .

PHYSICAL REVIEW A, 1972, 6 (04) :1469-&

[7] AN ATOMIC MULTICONFIGURATIONAL DIRAC-FOCK PACKAGE [J].

GRANT, IP ;

MCKENZIE, BJ ;

NORRINGTON, PH ;

MAYERS, DF ;

PYPER, NC .

COMPUTER PHYSICS COMMUNICATIONS, 1980, 21 (02) :207-231

[8] ELECTRON-IMPACT IONIZATION OF IRON IONS - FE-11+, FE-13+, AND FE-15+ [J].

GREGORY, DC ;

WANG, LJ ;

MEYER, FW ;

RINN, K .

PHYSICAL REVIEW A, 1987, 35 (08) :3256-3264

[9] CONTRIBUTIONS OF EXCITATION AUTOIONIZATION TO THE ELECTRON-IMPACT IONIZATION OF MG+, AL2+, AND SI3+ IN THE DISTORTED-WAVE APPROXIMATION WITH EXCHANGE [J].

GRIFFIN, DC ;

BOTTCHER, C ;

PINDZOLA, MS .

PHYSICAL REVIEW A, 1982, 25 (01) :154-160

[10] DISTORTED-WAVE CALCULATIONS OF THE ELECTRON-IMPACT IONIZATION OF HIGHLY IONIZED NA-LIKE IONS [J].

GRIFFIN, DC ;

PINDZOLA, MS ;

BOTTCHER, C .

PHYSICAL REVIEW A, 1987, 36 (08) :3642-3653