Published March 1980 | Version v1
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The dosimetry of 3 MeV and 14 MeV neutrons with the ferrous sulphate solution

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Description

The aim of the present work is to determine the G value of a standard ferrous sulphate solution for neutrons with mean energies of 3 MeV and 14 MeV. The number of the transformed Fe ions is evaluated by means of a spectrophotometrical procedure and the absorbed energy is determined by applying the ionometrical method. Especial attention is payed to the calculation of the mean total dose in the irradiated sample taking radiation attenuation into account. For this purpose the spatial distribution of absorbed energy within the probe is determined. Further, it is investigated how the fraction of the γ component in the total absorbed dose varies in the sample, in order to evaluate its mean value, which is needed for the final determination of the G value for the neutron component. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Das Ziel der vorliegenden Arbeit ist die Bestimmung des G-Wertes einer Standard-Ferrosulphat-Loesung fuer Neutronen mit mittlerem Energiegehalt von 3 MeV und 14 MeV. Die Anzahl der umgewandelten Fe-Ione wird mittels Photo-Spektroskopie bestimmt, die absorbierte Energie durch Anwendung des ionoskopischen Verfahrens. Es wird besonders auf die Berechnung der mittleren Gesamtdosis in der bestrahlten Probe geachtet unter Beruecksichtigung der Abschwaechung der Strahlung. Zu diesem Zweck wird die oertliche Verteilung der absorbierten Energie innerhalb der Probe bestimmt. Weiterhin wird untersucht, wie der γ-Anteil in der gesamten absorbierten Dosis in der Probe variiert, um keinen mittleren Wert herauszufinden, der wiederum fuer die endgueltige Bestimmung des γ-Wertes fuer den Neutronenanteil notwendig ist. (orig.)

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Additional details

Publishing Information

Imprint Pagination
121 p.
Report number
GSF-B--1131

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
12629975
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
CHEMICAL DOSEMETERS; FAST NEUTRONS; G VALUE; IRON SULFATES; MEV RANGE 01-10; MEV RANGE 10-100; NEUTRON DOSIMETRY; SPATIAL DOSE DISTRIBUTIONS; SPECTROPHOTOMETRY
Descriptors DEC
BARYONS; DOSEMETERS; DOSIMETRY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; IRON COMPOUNDS; MEASURING INSTRUMENTS; MEV RANGE; NEUTRONS; NUCLEONS; OXYGEN COMPOUNDS; RADIATION DOSE DISTRIBUTIONS; SULFATES; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS