Skip to Main content Skip to Navigation
Theses

Production de noyaux chauds dans les réactions Ar+Ag a 50 et 70 MeV per nucléon:limites du mode standard de désintégration ?

Abstract : The experiment discussed in this thesis is devoted to the study of hot nuclei produced in the Ar + Ag collisions at 50 and 70 MeV per nucléon. Spécial emphasis has been given to the standard decay of these nuclei, i.e to the sequential evaporation process leading to a heavy residue. The experimental set up has been triggered by a residue detector and all the evaporated light charged particles have been detected in a large area set up covering nearly the whole space. It has been possible to sort all the detected particles and to isolate those evaporated from the initial hot nuclei, the initial characteristics of which have been reconstructed. Two important features have been stressed: — A hot nuclei can sustain an excitation energy of 6 MeV/a and a temperature of 8 MeV without desintegrating completely. — The distributions of excitation energy stored at 50 and 70 MeV/nucleon are similar. This result can refled either an entrance channel property or a hot nuclei behaviour. Further results obtained in this work give arguments supporting the first interpretation.
Document type :
Theses
Complete list of metadata

http://hal.in2p3.fr/in2p3-00018175
Contributor : Sandrine Guesnon <>
Submitted on : Friday, March 26, 2021 - 4:54:48 PM
Last modification on : Wednesday, March 31, 2021 - 2:25:20 PM
Long-term archiving on: : Sunday, June 27, 2021 - 7:05:13 PM

File

24003859.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : in2p3-00018175, version 1

Citation

E. Vient. Production de noyaux chauds dans les réactions Ar+Ag a 50 et 70 MeV per nucléon:limites du mode standard de désintégration ?. Physique Nucléaire Expérimentale [nucl-ex]. Université de Caen, 1992. Français. ⟨in2p3-00018175⟩

Share

Metrics

Record views

141

Files downloads

20