Contribution to the study of the thermal fission process for uranium 235 (1964)
Creators
- 1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Description
This report deals with the study of the distribution of the masses of the fragments produced by the disintegration of the U-236 nucleus, formed when a U-235 nucleus captures a thermal neutron. The experimental method chosen consists in the simultaneous measurement using p-n silicon junction detectors of the energies of the two fragments emitted in coincidence. This measurement is first made by a conditioned analysis of the energy of one of the fragments and then by a two dimensional analysis of the energies of the two fragments. Systematic results, are obtained concerning the distribution of the masses for different values of the total kinetic energy. The five structures appearing both for the mass distributions and for the energies of the fragments are studied and discussed. Generally speaking, our results are in agreement with those obtained by the time-of-flight method. (author)
Availability note (English)
Available from INIS in electronic formAbstract (French)
Le present rapport a pour objet t'etude de la distribution des masses des fragments emis lors de la fission du noyau U-236, forme par capture d'un neutron thermique par un noyau d'U-235. La methode experimentale choisie consiste en la mesure simultanee - a l'aide de detecteurs a jonction p-n au silicium des energies des deux fragments emis en coincidence. Cette mesure est d'abord effectuee par analyse conditionnee de l'energie de l'un des fragments puis par analyse bidimensionnelle des energies des deux fragments. Des resultats systematiques sont obtenus sur les distributions des masses pour differentes valeurs de l'energie cinetique totale. Les 'structures fines' apparaissant tant sur les distributions des masses que sur celles des energies des fragments sont egalement etudiees et discutees. D'une facon generale, nos resultats sont en accord avec ceux obtenus par la methode du temps de vol. (auteur)Files
37064752.pdf
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Additional details
Additional titles
- Original title (French)
- Contribution a l'etude du processus de la fission thermique de l'uranium 235 (1964)
Publishing Information
- Imprint Pagination
- 85 p.
- Report number
- CEA-R--2408
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 37064752
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- COINCIDENCE METHODS; CORRELATIONS; ENERGY SPECTRA; FISSION FRAGMENTS; FISSION PRODUCTS; JUNCTION DETECTORS; KINETIC ENERGY; MASS DISTRIBUTION; THERMAL FISSION; URANIUM 235; URANIUM 236
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYON REACTIONS; COUNTING TECHNIQUES; DISTRIBUTION; ENERGY; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FISSION; HADRON REACTIONS; HEAVY NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MATERIALS; MEASURING INSTRUMENTS; MINUTES LIVING RADIOISOTOPES; NEUTRON REACTIONS; NUCLEAR FRAGMENTS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; RADIATION DETECTORS; RADIOACTIVE MATERIALS; RADIOISOTOPES; SEMICONDUCTOR DETECTORS; SPATIAL DISTRIBUTION; SPECTRA; SPONTANEOUS FISSION RADIOISOTOPES; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 40 refs.