Electron-impact ionization of Be-like CIII, NIV, and OV

被引：32

作者：

Fogle, M. ^{[1
]}

Bahati, E. M. ^{[1
]}

Bannister, M. E. ^{[1
]}

Vane, C. R. ^{[1
]}

Loch, S. D. ^{[2
]}

Pindzola, M. S. ^{[2
]}

Ballance, C. P. ^{[3
]}

Thomas, R. D. ^{[4
]}

Zhaunerchyk, V. ^{[4
]}

Bryans, P. ^{[5
]}

Mitthumsiri, W. ^{[5
]}

Savin, D. W. ^{[5
]}

机构：

[1] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[2] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

[3] Rollins Coll, Dept Phys, Winter Pk, FL 32789 USA

[4] Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden

[5] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2008年 / 175卷 / 02期

关键词：

atomic data; atomic processes; methods : laboratory;

D O I：

10.1086/525256

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present recent measurements of absolute electron-impact ionization cross sections for Be-like C III, N IV, and O V forming Li- like C IV, N V, and O VI. The measurements were taken using the crossed-beams apparatus at Oak Ridge National Laboratory. A gas cell beam attenuation method was used to independently measure the metastable fractions present in the ion beams. The measured ionization cross sections were compared with calculations using the R-matrix with pseudostates and distorted-wave theoretical methods. Best agreement is found with the R-matrix with pseudostates cross sections results that account for the metastable fractions inferred from the gas attenuation measurements. We present a set of recommended rate coefficients for electron-impact single ionization from the ground state and metastable term of each ion.

引用

页码：543 / 556

页数：14

共 50 条

[21] Electron-impact excitation of Ni II
Dunleavy, N. L.
Ramsbottom, C. A.
Ballance, C. P.
ASTRONOMY & ASTROPHYSICS, 2021, 648
[22] INFLUENCE OF ELECTRON-IMPACT MULTIPLE IONIZATION ON EQUILIBRIUM AND DYNAMIC CHARGE STATE DISTRIBUTIONS: A CASE STUDY USING IRON
Hahn, M.
Savin, D. W.
ASTROPHYSICAL JOURNAL, 2015, 800 (01)
[23] Electron-impact excitation of Ar2+
Burgos, J. M. Munoz
Loch, S. D.
Ballance, C. P.
Boivin, R. F.
ASTRONOMY & ASTROPHYSICS, 2009, 500 (03): : 1253 - 1261
[24] Energy levels, radiative rates and electron impact excitation rates for transitions in Be-like Ti XIX
Aggarwal, Kanti M.
Keenan, Francis P.
PHYSICA SCRIPTA, 2012, 86 (05)
[25] The Strong Enhancement of Electron-Impact Ionization Processes in Dense Plasma by Transient Spatial Localization
Zeng, Jiaolong
Ye, Chen
Liu, Pengfei
Gao, Cheng
Li, Yongjun
Yuan, Jianmin
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 2022, 23 (11)
[26] Electron-impact single ionization for the N2+ and N3+ ions
Kyniene, A.
Masys, S.
Jonauskas, V.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2024, 315
[27] Energy levels, radiative rates and electron impact excitation rates for transitions in CIII
Aggarwal, Kanti M.
Keenan, Francis P.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 450 (02) : 1151 - 1163
[28] Electron-ion Recombination Rate Coefficients of Be-like 40Ca16+
Wang, S. X.
Xu, X.
Huang, Z. K.
Wen, W. Q.
Wang, H. B.
Khan, N.
Preval, S. P.
Badnell, N. R.
Schippers, S.
Mahmood, S.
Dou, L. J.
Chuai, X. Y.
Zhao, D. M.
Zhu, X. L.
Mao, L. J.
Ma, X. M.
Li, J.
Mao, R. S.
Yuan, Y. J.
Tang, M. T.
Yin, D. Y.
Yang, J. C.
Ma, X.
Zhu, L. F.
ASTROPHYSICAL JOURNAL, 2018, 862 (02)
[29] Resonance-enhanced electron-impact excitation of Cu-like gold
Xia, L.
Zhang, C. Y.
Si, R.
Guo, X. L.
Chen, Z. B.
Yan, J.
Li, S.
Chen, C. Y.
Wang, K.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2017, 198 : 48 - 58
[30] SEMICLASSICAL APPROXIMATION FOR ELECTRON-IMPACT EXCITATION OF HYDROGENIC IONS
JUNG, YD
ASTROPHYSICAL JOURNAL, 1993, 409 (02) : 841 - 845

← 1 2 3 4 5 →