Published 1954 | Version v1
Report Open

Measurement of the thermal neutron fission cross-sections ratio of 239Pu and of natural uranium

Creators

  • 1. Service de physique nucleaire, Centre d'etudes Nucleaires de Saclay, Commissariat a l'Energie Atomique (France)

Description

The cross section ratio has been determined using two different experimental devices for a thermal neutron flux from a radial channel of the Chatillon heavy water cell; this ratio is found equal to 205.7 ± 4. The significance of this result is discussed and compared with cross-section values published elsewhere. Reprint of a paper published in 'Journal de Physique et le Radium', t. 15, Feb 1954, p. 101-108.

Abstract (French)

Le rapport indique en titre a ete determine a l'aide de deux dispositifs experimentaux differents pour un flux de neutrons thermiques issus d'un canal radial de la pile a eau lourde de Chatillon et trouve egal a 205,7 ± 4. La signification de ce resultat est discutee et comparee avec les valeurs de sections efficaces publiees par ailleurs. Reproduction d'un article publie dans le 'Journal de Physique et le Radium', t. 15, fevrier 1954, p. 101-108.

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Additional details

Additional titles

Original title (French)
Mesure du rapport des sections efficaces de fission par neutrons thermiques de 239Pu et de l'uranium naturel

Publishing Information

Imprint Pagination
10 p.
Report number
CEA-R--280

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
50015121
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
ALPHA PARTICLES; COMPARATIVE EVALUATIONS; CROSS SECTIONS; EL-1 REACTOR; FISSION FRAGMENT DETECTION; FISSION RATIO; NATURAL URANIUM; NUCLEAR FRAGMENTS; NUCLEAR REACTION YIELD; PLUTONIUM 239; THERMAL NEUTRONS
Descriptors DEC
ACTINIDE NUCLEI; ACTINIDES; ALPHA DECAY RADIOISOTOPES; BARYONS; CHARGED PARTICLES; DETECTION; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ELEMENTS; EVALUATION; EVEN-ODD NUCLEI; EXPERIMENTAL REACTORS; FERMIONS; HADRONS; HEAVY NUCLEI; HEAVY WATER COOLED REACTORS; HEAVY WATER MODERATED REACTORS; IONIZING RADIATIONS; IRRADIATION REACTORS; ISOTOPE PRODUCTION REACTORS; ISOTOPES; METALS; NATURAL URANIUM REACTORS; NEUTRONS; NUCLEI; NUCLEONS; PLUTONIUM ISOTOPES; RADIATION DETECTION; RADIATIONS; RADIOISOTOPES; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; SPONTANEOUS FISSION RADIOISOTOPES; TANK TYPE REACTORS; THERMAL REACTORS; URANIUM; YEARS LIVING RADIOISOTOPES; YIELDS

Optional Information

Notes
20 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses