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AbstractAbstract
[en] This work presents the set-up of an original interferometrical method the aim of which is to access the intrinsic parameters (lifetime or natural width) of intermediate resonances created during nuclear collisions. The technic is based on the overlap of two events in the same detection, and shows some analogies with the interferometrical measurements based on the HANBURY-BROWN, TWISS effect. It applies to reactions leading to a three particle final state for which at least two particles are identical. The considered reactions are 11B(α,7Li)αα; 12C(160,α)12C12C, 11B(p,α)αα in which the intermediate source is respectively a level of 11B*, 160*, 8Be*. The results are in qualitative agreement with such an analysis
[fr]
Cette these presente l'elaboration et la mise en oeuvre d'une methode interferometrique originale dont l'objet est d'acceder aux parametres intrinseques (duree de vie, largeur naturelle) de resonances intermediaires creees a l'occasion de collisions nucleaires. La technique employee, basee sur la superposition de deux evenements correspondant a une meme detection, montre des analogies avec les mesures interferometriques utilisant l'effet HANBURY-BROWN, TWISS. Elle s'applique aux reactions conduisant a un etat final a trois particules dont deux au moins sont identiques. Cette methode est appliquee aux reactions 11B(α,7Li)αα; 12C(160,α)12C12C, 11B(p,α)αα ou la source intermediaire est liee a un etat metastable de 11B*, 160*, 8Be* respectivement. Les resultats experimentaux obtenus revelent un accord qualitatif non negligeable avec l'analyse realiseeOriginal Title
Contribution a l'analyse de sources de particules par interferometrie dans le cas d'un etat final a trois corps
Primary Subject
Source
1984; 100 p; These (3e Cycle).
Record Type
Report
Literature Type
Thesis/Dissertation
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Country of publication
ALPHA PARTICLES, ALPHA REACTIONS, BERYLLIUM 8, BORON 11, BORON 11 TARGET, CARBON 12, CARBON 12 TARGET, COINCIDENCE METHODS, CORRELATION FUNCTIONS, DIFFERENTIAL CROSS SECTIONS, INTERFEROMETRY, LITHIUM 7, METASTABLE STATES, OXYGEN 16, OXYGEN 16 REACTIONS, PROTON REACTIONS, RESONANCE, THREE-BODY PROBLEM
ALPHA DECAY RADIOISOTOPES, BARYON REACTIONS, BERYLLIUM ISOTOPES, BORON ISOTOPES, CARBON ISOTOPES, CHARGED PARTICLES, COUNTING TECHNIQUES, CROSS SECTIONS, ENERGY LEVELS, EVEN-EVEN NUCLEI, EXCITED STATES, FUNCTIONS, HADRON REACTIONS, HEAVY ION REACTIONS, HELIUM IONS, IONIZING RADIATIONS, IONS, ISOTOPES, LIGHT NUCLEI, LITHIUM ISOTOPES, MANY-BODY PROBLEM, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, ODD-EVEN NUCLEI, OXYGEN ISOTOPES, RADIATIONS, RADIOISOTOPES, STABLE ISOTOPES, TARGETS
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