Forbidden transitions in Li-like ions: Compact effective collision strengths for 2s-ns, nd where n=3, 4, 5

被引：5

作者：

Burgess, A

Chidichimo, MC

Tully, JA

机构：

[1] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 9EW, England

[2] Univ Waterloo, Dept Appl Math, Waterloo, ON N2L 3G1, Canada

[3] Observ Cote Azur, Dept GD Cassini, F-06304 Nice, France

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1998年 / 131卷 / 01期

关键词：

Li-like ions; electron excitation; compact atomic data;

D O I：

10.1051/aas:1998258

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using an extension of the method for compacting atomic data set out by Burgess & Tully (1992), we make concise fits to a selection of the set of collision strengths Omega given by Zhang et al. (1990) far Li-like ions from O+5 to U+89. We carry out thermal averaging and fit the resulting effective collision strengths Upsilon. A compact 5 x 5 or 4 x 4 table of cardinal values for each transition allows one to reproduce the T and Z dependent Upsilon to better than 1 per cent. The present study is for the forbidden transitions 2s --> 3s, 4s, 5s and 2s --> 3d, 4d, 5d.

引用

页码：145 / 152

页数：8

共 50 条

[21] Isotope shift of the 2s ~2S1/2→ 2p ~2P1/2,3/2 transitions of Li-like Ca ions
张登红
张芳军
丁晓彬
董晨钟
Chinese Physics B, 2021, 30 (04) : 242 - 246
[22] Isotope shift of the 2s 2S1/2 → 2p 2P1/2,3/2 transitions of Li-like Ca ions
Zhang, Denghong
Zhang, Fangjun
Ding, Xiaobin
Dong, Chenzhong
CHINESE PHYSICS B, 2021, 30 (04)
[23] Effective collision strengths for fine-structure forbidden transitions among the 3s23p4 levels of Cl II (vol 331, pg 389, 2002)
Wilson, NJ
Bell, KL
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 338 (02) : 544 - 544
[24] HELIUM-LIKE ION LINE-INTENSITIES .4. Z-DEPENDENCE OF COLLISION STRENGTHS FOR N=2-]N=1 TRANSITIONS IN HELIUM-LIKE AND HYDROGENLIKE IONS
MEWE, R
SCHRIJVER, J
SYLWESTER, J
ASTRONOMY & ASTROPHYSICS, 1980, 87 (1-2) : 55 - 57
[25] COLLISION STRENGTHS FOR INNER-SHELL EXCITATION OF LI-LIKE IONS FROM LEVELS OF THE 1S22S AND 1S22P CONFIGURATIONS TO LEVELS OF THE 1S2L2L' CONFIGURATIONS
GOETT, SJ
SAMPSON, DH
ATOMIC DATA AND NUCLEAR DATA TABLES, 1983, 29 (03) : 535 - 572
[26] Experimental investigation of gas phase ions of the form [c-CnH2nS∴ICH3]+ where n=2, 3, 4, and 5.: Metastable and collision-induced dissociation results
King, JE
Illies, AJ
JOURNAL OF PHYSICAL CHEMISTRY A, 2002, 106 (51): : 12248 - 12251
[27] ENERGY-LEVELS, WAVELENGTHS, AND WEIGHTED OSCILLATOR-STRENGTHS FOR N = 3-4 AND 4-4 TRANSITIONS IN CU-LIKE IONS (SR X TO ND XXXII)
BIEMONT, E
ATOMIC DATA AND NUCLEAR DATA TABLES, 1988, 39 (01) : 157 - 181
[28] Effective Collision Strengths for Fine-Structure Transitions From the 3s23p5 2p Ground State of Chlorine-Like Ni XII
Matthews, A.
Ramsbottom, C. A.
Bell, K. L.
Keenan, F. P.
Astrophysical Journal, 492 (01):
[29] Effective collision strengths for fine-structure transitions from the 3s23p5 2P ground state of chlorine-like Ni XII
Matthews, A
Ramsbottom, CA
Bell, KL
Keenan, FP
ASTROPHYSICAL JOURNAL, 1998, 492 (01): : 415 - 419
[30] Atomic data for doubly-excited states 2lnl′ of He-like ions and 1s2lnl′ of Li-like ions with Z=6-36 and n=2, 3
Goryaev, F. F.
Vainshtein, L. A.
Urnov, A. M.
ATOMIC DATA AND NUCLEAR DATA TABLES, 2017, 113 : 117 - 257

← 1 2 3 4 5 →