Published September 1966
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Two-body interaction in the reaction 9Be(n,nn)αα at 14 MeV. I. Existence of resonating states
- 1. Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires
Description
We have studied the basic mechanisms of the reaction 9Be(n,nn)αα and their application to an experiment in which the 2 impulsion vectors of the neutrons are measured. We have performed kinematic and phase space calculations. An analysis of groups of events (n,2n) observed in the (T1,T2) plot shows a sequence of 2 body interactions: inelastic scattering 9Be(n,n') followed by emission of neutrons 9Be* → 8Be* + n of the decay of the (6,76 - 7,94 - 9,1 MeV) levels of 9Be to 8Be in the (0+) and (2+) states. (author)
Availability note (English)
Available from INIS in electronic formAbstract (French)
Les mecanismes de la reaction 9Be(n,nn)αα et leur application a l'experience ou sont mesures simultanement les vecteurs impulsions des neutrons ont etes etudies. Les calculs cinematiques et d'espace de phases sont presentes. L'analyse des groupements d'evenements (n,2n) observes dans le diagramme (T1,T2) met en evidence une suite d'interactions a 2 corps: diffusion inelastique 9Be(n,n') sur les niveaux (6,76 - 7,94 - 9,1 MeV) qui se desintegrent par emission neutron avec formation du 8Be dans les etats (0+) et (2+)Files
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Additional details
Additional titles
- Original title (French)
- Interactions a deux corps dans la reaction
Publishing Information
- Imprint Pagination
- 42 p.
- Report number
- CEA-R--2985
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 36115188
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- BERYLLIUM 8; BERYLLIUM 9 TARGET; DALITZ PLOT; DIFFERENTIAL CROSS SECTIONS; ENERGY LEVELS; HELIUM 4; INELASTIC SCATTERING; MEV RANGE 10-100; NEUTRON EMISSION; NEUTRON REACTIONS; PARTICLE KINEMATICS; THREE-BODY PROBLEM
- Descriptors DEC
- ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; BARYON REACTIONS; BERYLLIUM ISOTOPES; CROSS SECTIONS; DIAGRAMS; EMISSION; ENERGY RANGE; EVEN-EVEN NUCLEI; HADRON REACTIONS; HELIUM ISOTOPES; INFORMATION; ISOTOPES; LIGHT NUCLEI; MANY-BODY PROBLEM; MEV RANGE; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; RADIOISOTOPES; SCATTERING; SCATTERPLOTS; STABLE ISOTOPES; TARGETS
Optional Information
- Notes
- 32 refs.