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Monte Carlo Simulation Of X-Ray Spectra In Absolute Units In The Energy Regime Between 1 And 50 Kev

Published online by Cambridge University Press:  02 July 2020

C. O. Schiebl ,
V. Ambrose  and
J. Wernisch
C. O. Schiebl
Affiliation:
MCS Consulting, Prof. Leopold Hauer-Gasse 7, A-3552, Lengenfeld, Austria
V. Ambrose
Affiliation:
Compaq Computer Corporation, 334 South Street, SHR3-2E/S25, Shrewsbury, MA01545-4112
J. Wernisch
Affiliation:
Tnstitut fur Angewandte und Technische Physik, Technical University of Vienna, Wiedner Hauptstrasse 8, 1040, Wien, Austria
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Extract

SeSAME, a Monte Carlo simulation program which can handle totally arbitrarily shaped twodimensional geometries, has been extended for the modeling of whole x-ray spectra in absolute units. The so called single scattering model has been used for the simulations presented here. Elastic scattering processes are modeled using a partial wave approach according to a relativistic expression derived by Mott. For the calculation of the electron energy loss the stopping power formula from Joy and Luo has been applied.

Two different double differential cross sections for continuous x-ray production have been implemented into SeSAME. The first one is an analytical model derived by Kirkpatrick and Wiedmann and is based on a non-relativistic theory developed by Sommerfield and Elwert. The second one uses tabulated values for the shape function for atomic-field Bremsstrahlung and scaled Bremsstrahlung cross sections differential only in photon energy according to Kissel at al.

Type
Quantitative X-Ray Microanalysis
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 82 - 83
Copyright
Copyright © Microscopy Society of America

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References

1.Mott, N.F., Proc. R. Soc. A, 124 (1929) 425Google Scholar
2.Joy, D.C. and Luo, S., Scanning, 11 (1989) 176CrossRefGoogle Scholar
3.Kirkpatrick, P. and Wiedmann, L., Phys. Rev., 67 (1945) 321CrossRefGoogle Scholar
4.Sommerfeld, A., Ann. Phys., 11 (1931) 257CrossRefGoogle Scholar
5.Elwert, G., Ann. Phys., 34 (1939) 178CrossRefGoogle Scholar
6.Kissel, L. at al., Atomic Data and Nuclear Data Tables, 28(3) (1983) 381CrossRefGoogle Scholar