Dynamical and statistical properties of hot nuclei
Creators
- Natowitz, J.B.1
- Gonin, M.1
- Hagel, K.1
- Wada, R.1
- Shlomo, S.1
- Bin, X.1
- Gui, M.1
- Lou, Y.1
- Utley, D.1
- Botting, T.1
- Choudhury, R.K.1
- Cooke, L.1
- Hurst, B.1
- O'Kelley, D.1
- Schmitt, R.P.1
- Turmel, W.1
- Utsunomiya, H.1
- Nebbia, G.2
- Fabris, D.2
- Ruiz, J.A.2
- Nardelli, G.2
- Poggi, M.2
- Zanon, R.2
- Viesti, G.3
- Burch, R.H.4
- Gramegna, F.4
- Prete, G.4
- Drain, D.5
- Chambon, B.5
- Cheynis, B.5
- Guinet, D.5
- Hu, X.C.5
- Demeyer, A.5
- Pasteur, C.5
- Giorni, A.6
- Lleres, A.6
- Stassi, P.6
- Viano, B.6
- Menchaca Rocha, A.7
- Brandan, M.E.7
- Gonthier, P.8
- 1. Cyclotron Inst., Texas A and M Univ., College Station, TX (United States)
- 2. INFN, Padua (Italy)
- 3. Dipt. di Fisica, Univ., Bari (Italy)
- 4. INFN, Legnaro (Italy)
- 5. IPN-Lyon, 69 - Villeurbanne (France)
- 6. ISN, 38 - Grenoble (France)
- 7. Inst. de Fisica, UNAM, Mexico City (Mexico)
- 8. Dept. of Physics, Hope Coll., Holland, MI (United States)
Description
Properties of medium mass nuclei having excitation energies of 1.5 to 6 MeV/u have been probed in measurements of the multiplicities and energy spectra of emitted particles and fragments. The particle spectra indicate a progressive reduction of both the level density parameter, a, and the emission barriers as the excitation energy is increased. The evolution of the dominant de-excitation modes, observed with increasing excitation energy, is found to be qualitatively consistent with the predictions of statistical models. There is, however, evidence that dynamics may play an important role in fragment emission processes. At energies of 6 MeV/u multifragment emission is an important process. Varying theoretical models predict such multifragment events but differ in their predictions of the probability of such events. (orig.)
Additional details
Publishing Information
- Journal Title
- Nuclear Physics. A
- Journal Volume
- 538
- Series
- Nucl. Phys., A.
- Journal Page Range
- 263c-274c
- ISSN
- 0375-9474
- CODEN
- NUPAB
Conference
- Title
- 4. international conference on nucleus-nucleus collisions (NN-4).
- Dates
- 10-14 Jun 1991.
- Place
- Kanazawa (Japan).
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 23050932
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Conference, Progress Report
- Descriptors DEI
- CALCIUM 40 REACTIONS; CALCIUM 40 TARGET; DE-EXCITATION; ENERGY SPECTRA; ENERGY-LEVEL DENSITY; EVAPORATION MODEL; EXCITED STATES; FISSION FRAGMENTS; GEV RANGE 01-10; INTERMEDIATE MASS NUCLEI; MEV RANGE 10-100; MOLYBDENUM 100 TARGET; MULTIPLICITY; NICKEL 60 REACTIONS; NUCLEAR REACTION KINETICS; NUCLEAR STRUCTURE; NUCLEAR TEMPERATURE; PROGRESS REPORT; QUASI-FISSION; REVIEWS; SPALLATION; SPALLATION FRAGMENTS; STATISTICAL MODELS; TEMPERATURE DEPENDENCE; THRESHOLD ENERGY
- Descriptors DEC
- DOCUMENT TYPES; ENERGY; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; GEV RANGE; HEAVY ION REACTIONS; KINETICS; MATHEMATICAL MODELS; MEV RANGE; NUCLEAR FRAGMENTS; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; REACTION KINETICS; SPECTRA; TARGETS