scholarly journals High energy PIXE: New experimental K-shell ionization cross sections for silver and gold and comparison with theoretical values from ECPSSR/RECPSSR models

2020 ◽  
Vol 479 ◽  
pp. 120-124
Author(s):  
Mostafa Hazim ◽  
Charbel Koumeir ◽  
Arnaud Guertin ◽  
Vincent Métivier ◽  
Adnan Naja ◽  
...  
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Shell Ionization

Measurements of Electron Impact K-shell Ionization Cross Sections of Cr21+ Ions

2021 ◽  
Author(s):  
David Vogel ◽  
Peter Beiersdorfer ◽  
Keith Wong ◽  
Ron Zasadzinski ◽  
Ming Feng Gu
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
X Rays ◽  
Distorted Wave ◽  
Ionization Cross ◽  
X Ray ◽  
Relative Cross Section ◽  
Inner Shell Ionization ◽  
Ionization Cross Sections ◽  
Shell Ionization

We present relative cross section measurements of the inner-shell ionization of highly charged chromium ions by high-energy (7-30 keV) electrons. The measurements use a technique based on high-resolution x-ray spectroscopy, which correlates ionization events with K∝ decay x rays. Moreover, the measurements show that inner-shell ionization only affects the strength of the heliumlike 1s2s 3S1 -> 1s2 1S0 forbidden line. The cross sections inferred for Li-like Cr21+ agree well with distorted wave calculations.

Measurement and Multiple Scattering Correction of K-Shell Ionization Cross Sections of Silver by Electron Impact

2001 ◽  
Vol 18 (4) ◽  
pp. 531-532 ◽  
Author(s):  
Zhou Chang-Geng ◽  
Fu Yu-Chuan ◽  
An Zhu ◽  
Tang Chang-Huan ◽  
Luo Zheng-Ming
Keyword(s):  
Electron Impact ◽  
Multiple Scattering ◽  
Cross Sections ◽  
Ionization Cross ◽  
Scattering Correction ◽  
Ionization Cross Sections ◽  
Shell Ionization

Preliminary Measurement of the K-Shell Ionization Cross Sections of Ti by Positron Impact in the Low Energy Region

2012 ◽  
Vol 14 (5) ◽  
pp. 434-437 ◽  
Author(s):  
Lixia Tian ◽  
Mantian Liu ◽  
Jingjun Zhu ◽  
Zhu An ◽  
Baoyi Wang ◽  
...  
Keyword(s):  
Cross Sections ◽  
Energy Region ◽  
Low Energy ◽  
Positron Impact ◽  
Ionization Cross ◽  
Preliminary Measurement ◽  
Ionization Cross Sections ◽  
Shell Ionization

Relative Variation of K- And L-Shell Ionization Cross Sections by Electron Impact

1999 ◽  
Vol 5 (S2) ◽  
pp. 584-585
Author(s):  
X. Llovet ◽  
C. Merlet ◽  
J.M. Fernández-Varea ◽  
F. Salvat
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Carbon Films ◽  
X Rays ◽  
Empirical Formulas ◽  
Relative Variation ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Semi Empirical ◽  
Shell Ionization

Knowledge of inner-shell ionization cross sections by electron impact is needed for quantitative procedures in electron probe microanalysis (EPMA) and Auger electron spectroscopy (AES) The common practice is to use semi-empirical formulas, based on the asymptotic limit of the Bethe theory, which sometimes are used beyond their domain of validity. Experimental measurements of ionization cross sections are scarce and affected by considerable uncertainties, thus a mere comparison with experimental data does not permit to draw a definite conclusion abou the accuracy of the various formulas. In this communication, we present new measurements o the relative variation of K- and L-shell ionization cross sections deduced from the counting rate of characteristic x-rays emitted by extremely thin films of Cr, Ni, Cu, Te, Au and Bi bombardec by keV electrons.The studied films were produced by thermal evaporation on backing self-supported 30 nm carbon films.

Measurement and Correction of K-Shell Ionization Cross Sections for Copper and Gallium by Electron Impact

2001 ◽  
Vol 18 (6) ◽  
pp. 759-760 ◽  
Author(s):  
Zhou Chang-Geng ◽  
An Zhu ◽  
Luo Zheng-Ming
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Shell Ionization

Modified Kolbensvedt model for the electron impact K-shell ionization cross-sections of atoms and ions

2005 ◽  
Vol 37 (3) ◽  
pp. 361-369 ◽  
Author(s):  
M. A. Uddin ◽  
A. K.F. Haque ◽  
K. R. Karim ◽  
A. K. Basak ◽  
F. B. Malik
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Shell Ionization

A COMPARISON OF THIN AND THICK TARGET METHODS OF MEASURING PROTON-INDUCED K-SHELL IONIZATION CROSS-SECTIONS

1980 ◽  
pp. 131-138
Author(s):  
K.M. BARFOOT ◽  
I.V. MITCHELL ◽  
H.L. ESCHBACH ◽  
W.B. GILBOY
Keyword(s):  
Cross Sections ◽  
Thick Target ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Shell Ionization

The Atomic K- and L-shell Ionization Cross-sections by Electron Impact

2002 ◽  
pp. 233-236 ◽  
Author(s):  
Changhuan Tang ◽  
Zhengming Luo ◽  
Zhu An ◽  
Fuqing He ◽  
Xiufeng Peng ◽  
...  
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Shell Ionization

K-shell ionization cross sections in asymmetric heavy-ion-atom collisions

1975 ◽  
Vol 11 (4) ◽  
pp. 1233-1238 ◽  
Author(s):  
Werner Brandt ◽  
Roman Laubert
Keyword(s):  
Cross Sections ◽  
Heavy Ion ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Shell Ionization
Sign in / Sign up

Export Citation Format

Share Document