Analysis of the sequential fission observed in collisions of 100Mo + 100Mo and 120Sn + 120Sn around 20 A.MeV
Creators
- Stefanini, A.A.1, 2, 3, 4, 5, 6
- Casini, G.1, 2, 3, 4, 5, 6
- Maurenzig, P.R.1, 2, 3, 4, 5, 6
- Olmi, A.1, 2, 3, 4, 5, 6
- Charity, R.J.1, 2, 3, 4, 5, 6
- Freifelder, R.1, 2, 3, 4, 5, 6
- Gobbi, A.1, 2, 3, 4, 5, 6
- Herrmann, N.1, 2, 3, 4, 5, 6
- Hildenbrand, K.D.1, 2, 3, 4, 5, 6
- Petrovici, M.1, 2, 3, 4, 5, 6
- Rami, F.1, 2, 3, 4, 5, 6
- Stelzer, H.1, 2, 3, 4, 5, 6
- Wessels, J.P.1, 2, 3, 4, 5, 6
- Gnirs, M.1, 2, 3, 4, 5, 6
- Pelte, D.1, 2, 3, 4, 5, 6
- Galin, J.1, 2, 3, 4, 5, 6
- Guerreau, D.1, 2, 3, 4, 5, 6
- Jahnke, U.1, 2, 3, 4, 5, 6
- Peghaire, A.1, 2, 3, 4, 5, 6
- Adloff, J.C.1, 2, 3, 4, 5, 6
- Bilwes, B.1, 2, 3, 4, 5, 6
- Bilwes, R.1, 2, 3, 4, 5, 6
- Rudolf, G.1, 2, 3, 4, 5, 6
- 1. CRN and Univ. Louis Pasteur, 67 Strasbourg (France)
- 2. GANIL, 14 Caen (France)
- 3. Physikalisches Inst. der Univ. Heidelberg (Germany)
- 4. Gesellschaft fuer Schwerionenforschung, Darmstadt (Germany)
- 5. INFN, Firenze (Italy)
- 6. Univ. di Firenze (Italy)
Description
Events with 2, 3 and 4 heavy fragments (A ≥ 20) detected in the reactions 100Mo + 100Mo at 18.7, 23.7 A.MeV and 120Sn + 120Sn at 18.4 A.MeV were analyzed by means of an improved version of the kinematic coincidence method. The phase-space distributions prove that 3- (and possibly 4-) body events predominantly originate from a two-step mechanism and are compatible with the hypothesis of a binary deep-inelastic interaction followed by the further fissionlike decay of one (or both) of the primary fragments. The characteristics of the fission step - mass asymmetry, relative velocity, in-plane and out-of-plane angles - have been reconstructed for the 3-body events and indications are found that nonequilibrium effects at the end of the deep-inelastic phase may influence the fissionlike decay. (orig.)
Additional details
Publishing Information
- Journal Title
- Zeitschrift fuer Physik. A, Hadrons and Nuclei
- Journal Volume
- 351
- Journal Issue
- 2
- Journal Page Range
- p. 167-186.
- ISSN
- 0939-7922
- CODEN
- ZPAHEX
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 26048670
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANGULAR CORRELATION; ANGULAR DISTRIBUTION; ASYMMETRY; BRANCHING RATIO; BREAKUP REACTIONS; DEEP INELASTIC HEAVY ION REACTIONS; DIFFERENTIAL CROSS SECTIONS; EFFECTIVE MASS; ENERGY LOSSES; EXPERIMENTAL DATA; FISSION FRAGMENTS; FISSION SPECTRA; GEV RANGE 01-10; IRREVERSIBLE PROCESSES; LIFETIME; MASS SPECTRA; MOLYBDENUM 100 REACTIONS; MOLYBDENUM 100 TARGET; NUCLEAR ALIGNMENT; NUCLEAR REACTION KINETICS; PHASE SPACE; POLARIZATION-ASYMMETRY RATIO; POLARIZED PRODUCTS; RARE EARTH NUCLEI; SPATIAL DISTRIBUTION; SPONTANEOUS FISSION; TIN 120 REACTIONS; TIN 120 TARGET; VELOCITY
- Descriptors DEC
- CORRELATIONS; CROSS SECTIONS; DATA; DECAY; DISTRIBUTION; ENERGY RANGE; FISSION; GEV RANGE; HEAVY ION REACTIONS; INFORMATION; INTERMEDIATE MASS NUCLEI; KINETICS; MASS; MATHEMATICAL SPACE; NUCLEAR DECAY; NUCLEAR FRAGMENTS; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; REACTION KINETICS; SPACE; SPECTRA; TARGETS