Electron-impact single ionisation of W14+ ions: subconfiguration-average and level-to-level distorted wave calculations

被引：17

作者：

Jin, F. ^{[1
,2
]}

Borovik, A., Jr. ^{[2
]}

Ebinger, B. ^{[2
,3
]}

Schippers, S. ^{[2
]}

机构：

[1] Natl Univ Def Technol, Dept Phys, Fuyuan Rd 1, Changsha 410022, Peoples R China

[2] Justus Liebig Univ Giessen, Phys Inst 1, Heinrich Buff Ring 16, D-35392 Giessen, Germany

[3] GSI Helmholtzzentrum Schwerionenforsch GmbH, Planckstr 1, D-64291 Darmstadt, Germany

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2020年 / 53卷 / 07期

基金：

美国国家科学基金会;

关键词：

electron-impact ionization; tungsten; distorted-wave method;

D O I：

10.1088/1361-6455/ab6d90

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The cross section for electron-impact single ionisation of W14+ ions has been calculated by using two different approaches, i.e. the subconfiguration averaged distorted-wave (SCADW) method and the more involved level-to-level distorted-wave (LLDW) method. Both methods are found to yield very similar results except for the 4d. 5d excitation-autoionisation (EA) channels that straddles the ionisation threshold. Accordingly, a hybrid theoretical cross section where the 4d. 5d EA SCADW cross section is replaced by its LLDW counterpart is in good agreement with the experimental result from an electron-ion crossed-beams experiment. This is in contrast to pure SCADW calculations for W14+ and neighbouring charge states which exhibit significant deviations from the experimental near-threshold cross sections of Schury et al (2020 J. Phys. B: At. Mol. Opt. Phys. 53 015201).

引用

页数：7

共 20 条

[1] Electron-impact single ionization of W19+ ions [J].

Borovik, Alexander, Jr. ;

Ebinger, Benjamin ;

Schury, Daniel ;

Schippers, Stefan ;

Mueller, Alfred .

PHYSICAL REVIEW A, 2016, 93 (01)

[2] Statistical model of electron impact ionization of multielectron ions [J].

Demura, A. V. ;

Kadomtsev, M. B. ;

Lisitsa, V. S. ;

Shurygin, V. A. .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2015, 48 (05)

[3] Resonant and nonresonant indirect electron-impact single ionization of beryllium-like carbon ions via K-shell excitation [J].

Ebinger, B. ;

Liu, P. ;

Borovik Jr, A. ;

Mueller, A. ;

Zeng, J. ;

Schippers, S. .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2019, 52 (03)

[4] The flexible atomic code [J].

Gu, Ming Feng .

CANADIAN JOURNAL OF PHYSICS, 2008, 86 (05) :675-689

[5] Contribution of high-nl shells to electron-impact ionization processes [J].

Jonauskas, V. ;

Kyniene, A. ;

Merkelis, G. ;

Gaigalas, G. ;

Kisielius, R. ;

Kucas, S. ;

Masys, S. ;

Radziute, L. ;

Rynkun, P. .

PHYSICAL REVIEW A, 2015, 91 (01)

[6] Tokamak operation with high-Z plasma facing components [J].

Kallenbach, A ;

Neu, R ;

Dux, R ;

Fahrbach, HU ;

Fuchs, JC ;

Giannone, L ;

Gruber, O ;

Herrmann, A ;

Lang, PT ;

Lipschultz, B ;

Maggi, CF ;

Neuhauser, J ;

Philipps, V ;

Pütterich, T ;

Rohde, V ;

Roth, J ;

Sergienko, G ;

Sips, A .

PLASMA PHYSICS AND CONTROLLED FUSION, 2005, 47 :B207-B222

[7]

Kramida A, 2019, TECHNICAL REPORT, DOI [10.18434/T4W30F, DOI 10.18434/T4W30F]

[8] Electron-impact ionization of W25+ [J].

Kyniene, A. ;

Pakalka, S. ;

Masys, S. ;

Jonauskas, V. .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2016, 49 (18)

[9] Influence of excitations to high-nl shells for the ionization process in the W26+ ion [J].

Kyniene, A. ;

Masys, S. ;

Jonauskas, V. .

PHYSICAL REVIEW A, 2015, 91 (06)

[10] ELECTRON-IMPACT IONIZATION OF FE-15+ BY RESONANT EXCITATION DOUBLE AUGER IONIZATION [J].

LAGATTUTA, KJ ;

HAHN, Y .

PHYSICAL REVIEW A, 1981, 24 (04) :2273-2276

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