Published 1994 | Version v1
Miscellaneous Metadata-only

From evaporation to multifragmentation of highly excited nuclei formed at GANIL energies

Creators

  • 1. Lab. de Physique Corpusculaire, ISMRA, 14 - Caen (France)
  • 2. CRN, 67 - Strasbourg (France)
  • 3. UCL, Louvain-la-Neuve (Belgium)
  • 4. GANIL, 14 - Caen (France)
  • 5. ULB, Brussels (Belgium)
  • 6. Lab. de Physique Corpusculaire, ISMRA, 14 -Caen (France)
  • 7. IPN, 91 - Orsay (France)
  • 8. Rikkyo Univ., Tokyo (Japan)
  • 9. CRN, 67 -Strasbourg (France)

Description

The formation and decay of excited nuclei with masses around A=200 are studied for excitation energy, ε* ranging from 0 to 6 MeV/u. For ε* values up to 6 MeV/n, the various decay channels ending with one (evaporation), two (fission) or more (3, 4, 5) fragments still compete. In case of multifragment emission, we find that: - the life-time of the excited nucleus before breaking is equal to 100-150 fm/c for ε* values around 5 MeV/u, - the emission time (i.e. the interval between the emission of two fragments) evolves from a large value (τ>1000 fm/c, sequential decay) when ε* equals 2-3 MeV/u to a very small value (τ<50 fm/c, simultaneous decay) for ε* values around 5 MeV/u. (orig.)

Additional details

Publishing Information

Imprint Title
Hirschegg '94: Multifragmentation. Proceedings
Imprint Pagination
299 p.
Journal Page Range
p. 152-161.
ISSN
0720-8715

Conference

Title
22. international workshop on gross properties of nuclei and nuclear properties.
Dates
17-22 Jan 1994.
Place
Hirschegg (Austria).

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
26003538
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference, Numerical Data, Non-conventional Literature
Descriptors DEI
ACTINIUM 217; ANGULAR CORRELATION; ANGULAR DISTRIBUTION; ARGON 36 REACTIONS; COMPOUND NUCLEI; COMPOUND-NUCLEUS REACTIONS; CORRELATION FUNCTIONS; DALITZ PLOT; ELEMENT 105 ISOTOPES; EVAPORATION MODEL; EXCITED STATES; EXPERIMENTAL DATA; FISSION FRAGMENTS; GEV RANGE 01-10; GOLD 197 TARGET; HEAVY ION REACTIONS; KRYPTON 84 REACTIONS; LIFETIME; MULTIPLICITY; NEON 20 REACTIONS; NUCLEAR REACTION KINETICS; QUASI-FISSION; SPALLATION; SPALLATION FRAGMENTS; SPONTANEOUS FISSION; STATISTICAL MODELS; TIME DEPENDENCE
Descriptors DEC
ACTINIDE NUCLEI; ACTINIUM ISOTOPES; ALPHA DECAY RADIOISOTOPES; CORRELATIONS; DATA; DECAY; DIAGRAMS; DISTRIBUTION; ENERGY LEVELS; ENERGY RANGE; FISSION; FUNCTIONS; GEV RANGE; HEAVY NUCLEI; INFORMATION; ISOTOPES; KINETICS; MATHEMATICAL MODELS; NANOSEC LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEAR FRAGMENTS; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; RADIOISOTOPES; REACTION KINETICS; SCATTERPLOTS; TARGETS