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Jacob, P. ; Paretzke, H.G.

Dose-rate conversion factors for external gamma exposure.

Nucl. Instrum. Methods Phys. Res. Sect. A 255, 156-159 (1987)
Open Access Green as soon as Postprint is submitted to ZB.
The Monte Carlo neutron and photon transport code SAM-CE has been used to calculate the photon radiation field in the air-over-ground geometry. It is shown that the external gamma exposure from Gaussian clouds is, for low energies, considerably reduced by the presence of the ground. Organ dose from point sources in the air and from plane sources on the ground have been calculated for several hundreds of radionuclides. In the second case, compared to results of other authors, higher doses were found for medium and high gamma energies, since the relatively low self-shielding of the human body against horizontal irradiations has been accounted for in this paper. For low gamma energies the doses are considerably reduced due to the, in this energy range, stronger shielding of surface roughness of the air-ground interface.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
ISSN (print) / ISBN 0168-9002
e-ISSN 1872-9576
Journal Nuclear Instruments and Methods in Physics Research Section A
Quellenangaben Volume: 255, Issue: 1-2, Pages: 156-159 Article Number: , Supplement: ,
Publisher Elsevier
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Radiation Protection (ISS)