X-ray signature of charge exchange in the spectra of L-shell iron ions

被引：14

作者：

Beiersdorfer, P. ^{[1
,2
]}

Schweikhard, L. ^{[3
]}

Liebisch, P. ^{[2
]}

Brown, G. V. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[3] Emst Moritz Amdt Univ, Inst Phys, D-17487 Greifswald, Germany

来源：

ASTROPHYSICAL JOURNAL | 2008年 / 672卷 / 01期

关键词：

atomic data; atomic processes; line : formation; X-rays : general;

D O I：

10.1086/522617

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The X-ray signature of charge exchange between highly charged L-shell iron ions and neutral gas atoms was studied in the laboratory in order to assess its diagnostic utility. Significant differences with spectra formed by electron-impact excitation were observed. In particular, a strong enhancement was found of the emission corresponding to n >= 4 -> n = 2 transitions relative to the n = 3 -> n = 2 emission. This enhancement was detectable even with relatively low-resolution X-ray instrumentation (E/Delta E approximate to 10) and may enable future identification of charge exchange as a line-formation mechanism in astrophysical spectra.

引用

页码：726 / 732

页数：7

共 50 条

[31] Observation of highly disparate K-shell x-ray spectra produced by charge exchange with bare mid-Z ions
Betancourt-Martinez, Gabriele L.
Beiersdorfer, Peter
Brown, Gregory V.
Kelley, Richard L.
Kilbourne, Caroline A.
Koutroumpa, Dimitra
Leutenegger, Maurice A.
Porter, F. Scott
PHYSICAL REVIEW A, 2014, 90 (05)
[32] RELATIVE INTENSITIES OF K- AND L-SHELL X-RAY LINES.
Schreiber, Thomas P.
Wims, Andrew M.
Research Publication - General Motors Research Laboratories, 1982,
[33] L-shell x-ray fluorescence measurements of lead in bone: theoretical considerations
Todd, AC
PHYSICS IN MEDICINE AND BIOLOGY, 2002, 47 (03): : 491 - 505
[34] L-shell X-ray production cross sections and alignment by proton impact
Petukhov, VP
Romanovsky, EA
Kerkow, H
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1996, 109 : 19 - 22
[35] Measurements of the L-shell X-ray emission of fluorine-like europium
Panchenko, D.
Beiersdorfer, P.
Hell, N.
Brown, G. V.
Kelley, R. L.
Kilbourne, C. A.
Porter, F. S.
CANADIAN JOURNAL OF PHYSICS, 2023, 101 (09) : 484 - 490
[36] L-shell x-ray fluorescence computed tomography (XFCT) imaging of Cisplatin
Bazalova, Magdalena
Ahmad, Moiz
Pratx, Guillem
Xing, Lei
PHYSICS IN MEDICINE AND BIOLOGY, 2014, 59 (01): : 219 - 232
[37] Attenuation correction of L-shell X-ray fluorescence computed tomography imaging
刘珑
黄旸
徐清
闫灵通
李丽
冯松林
冯向前
Chinese Physics C, 2015, (03) : 107 - 112
[38] L-shell x-ray emission from neonlike W64+
Beiersdorfer, P.
Lepson, J. K.
Schneider, M. B.
Bode, M. P.
PHYSICAL REVIEW A, 2012, 86 (01):
[39] L-shell x-ray fluorescence measurements of lead in bone: system development
Todd, AC
PHYSICS IN MEDICINE AND BIOLOGY, 2002, 47 (03): : 507 - 522
[40] Investigation on L-shell X-ray fluorescence parameters for heavy elements and compounds
Cengiz, E.
Tirasoglu, E.
Aylikci, V.
Apaydin, G.
Aylikci, N. Kup
CHEMICAL PHYSICS LETTERS, 2010, 498 (1-3) : 107 - 112

← 1 2 3 4 5 →