Influence of the plasma environment on auto-ionization

被引：18

作者：

Belkhiri, Madeny ^{[1
]}

Fontes, Christopher J. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Computat Phys Div, Los Alamos, NM 87545 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2016年 / 49卷 / 17期

关键词：

autoionization; ion-sphere; plasma potential; FAC; GIPPER; ELECTRON-IMPACT EXCITATION; HIGHLY-CHARGED IONS; DENSE-PLASMAS; LINES; IONIZATION; LASER;

D O I：

10.1088/0953-4075/49/17/175002

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, we show the influence of the plasma environment on the auto-ionization rate using an ion-sphere model. We consider transitions from the He-like to the H-like ion stage of aluminum for illustrative purposes, but the approach is completely general and can be applied to arbitrary, highly charged ions. A detailed numerical investigation and comparison is made between two independent computational schemes, using the relativistic configuration-average, distorted-wave approach. We show that the decreasing behavior of the auto-ionization rates as a function of free-electron density is due to a change in the quantum interference between the bound and free electrons, and also provide a qualitative explanation of this trend.

引用

页数：10

共 26 条

[21] ENERGY-SPECTRUM OF HYDROGEN-ATOMS IN DENSE-PLASMAS
SEIDEL, J
ARNDT, S
KRAEFT, WD
[J]. PHYSICAL REVIEW E, 1995, 52 (05): : 5387 - 5400
[22] LOWERING OF IONIZATION POTENTIALS IN PLASMAS
STEWART, JC
PYATT, KD
[J]. ASTROPHYSICAL JOURNAL, 1966, 144 (03) : 1203 - &
[23] Weisheit J C., 2006, Springer Handbook of Atomic, Molecular and Optical Physics, P1303, DOI DOI 10.1007/978-0-387-26308-3_86
[24] PLASMA-SCREENING EFFECTS ON ELECTRON-IMPACT EXCITATION OF HYDROGENIC IONS IN DENSE-PLASMAS
WHITTEN, BL
LANE, NF
WEISHEIT, JC
[J]. PHYSICAL REVIEW A, 1984, 29 (02): : 945 - 952
[25] Convergent-close-coupling calculations for excitation and ionization processes of electron-hydrogen collisions in Debye plasmas
Zammit, Mark C.
Fursa, Dmitry V.
Bray, Igor
[J]. PHYSICAL REVIEW A, 2010, 82 (05):
[26] FULLY RELATIVISTIC AND QUASIRELATIVISTIC DISTORTED-WAVE METHODS FOR CALCULATING COLLISION STRENGTHS FOR HIGHLY CHARGED IONS
ZHANG, HL
SAMPSON, DH
MOHANTY, AK
[J]. PHYSICAL REVIEW A, 1989, 40 (02): : 616 - 632

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