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Calculation of photon attenuation coeeficients of elements and compounds from approximate semi-analytical formulae; Ccalculo de los coeficientes de atenuacion de fotones de elementos y compuestos a partir de formulas de aproximacion semianalitica

Technical Report:

Abstract

The FORTRAN 77 code PHOTAC to compute photon attenuation coefficients of elements and compounds is described. The code is based on the semi-analytical approximate atomic cross sections proposed by Baro et al. (1994). Photoelectric cross sections are calculated directly from a simple analytical expression. Atomic cross sections for coherent and incoherent scattering and for pair production are obtained as integrals of the corresponding differential cross sections. These integrals are evaluated, to a pre-selected accuracy, by using a 20-point Gauss adaptive integration algorithm. Calculated attenuation coefficients agree with recently compiled databases to within equal 1%, in the energy range from 1 KeV to 1 GeV. The complete source listing of the program PHOTAC is included.
Publication Date:
Dec 01, 1994
Product Type:
Technical Report
Report Number:
CIEMAT-732
Reference Number:
SCA: 664200; 990200; 663620; PA: SPN-94:0B0785; EDB-95:018525; SN: 94001295720
Resource Relation:
Other Information: PBD: [1994]
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; PHOTONS; ATTENUATION; ELEMENTS; PHOTON TRANSPORT; ORGANIC COMPOUNDS; INORGANIC COMPOUNDS; P CODES; COMPUTER CALCULATIONS; FORTRAN; PROGRAMMING LANGUAGES; CROSS SECTIONS; PHOTOELECTRIC EFFECT; 664200; 990200; 663620; SPECTRA OF ATOMS AND MOLECULES AND THEIR INTERACTIONS WITH PHOTONS; MATHEMATICS AND COMPUTERS; PHYSICS OF RADIATIONS OTHER THAN NEUTRONS
OSTI ID:
10104693
Research Organizations:
Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Madrid (Spain)
Country of Origin:
Spain
Language:
English
Other Identifying Numbers:
Other: ON: DE95721643; TRN: ES94B0785
Availability:
OSTI; NTIS; INIS
Submitting Site:
INIS
Size:
51 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Roteta, M, Baro, J, Fernandez-Varea, J M, and Salvat, F. Calculation of photon attenuation coeeficients of elements and compounds from approximate semi-analytical formulae; Ccalculo de los coeficientes de atenuacion de fotones de elementos y compuestos a partir de formulas de aproximacion semianalitica. Spain: N. p., 1994. Web.
Roteta, M, Baro, J, Fernandez-Varea, J M, & Salvat, F. Calculation of photon attenuation coeeficients of elements and compounds from approximate semi-analytical formulae; Ccalculo de los coeficientes de atenuacion de fotones de elementos y compuestos a partir de formulas de aproximacion semianalitica. Spain.
Roteta, M, Baro, J, Fernandez-Varea, J M, and Salvat, F. 1994. "Calculation of photon attenuation coeeficients of elements and compounds from approximate semi-analytical formulae; Ccalculo de los coeficientes de atenuacion de fotones de elementos y compuestos a partir de formulas de aproximacion semianalitica." Spain.
@misc{etde_10104693,
title = {Calculation of photon attenuation coeeficients of elements and compounds from approximate semi-analytical formulae; Ccalculo de los coeficientes de atenuacion de fotones de elementos y compuestos a partir de formulas de aproximacion semianalitica}
author = {Roteta, M, Baro, J, Fernandez-Varea, J M, and Salvat, F}
abstractNote = {The FORTRAN 77 code PHOTAC to compute photon attenuation coefficients of elements and compounds is described. The code is based on the semi-analytical approximate atomic cross sections proposed by Baro et al. (1994). Photoelectric cross sections are calculated directly from a simple analytical expression. Atomic cross sections for coherent and incoherent scattering and for pair production are obtained as integrals of the corresponding differential cross sections. These integrals are evaluated, to a pre-selected accuracy, by using a 20-point Gauss adaptive integration algorithm. Calculated attenuation coefficients agree with recently compiled databases to within equal 1%, in the energy range from 1 KeV to 1 GeV. The complete source listing of the program PHOTAC is included.}
place = {Spain}
year = {1994}
month = {Dec}
}