Study of a fast collective mode in deep inelastic reactions: quantal fluctuations
| Autor: | Uli Lynen, Herbert Stelzer, Michel Berlanger, Alberto Gobbi, M.F. Rivet, Hervé Richel, C. Ngô, Hendrik Sann, Francis Hanappe, Alessandro Olmi |
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| Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) |
| Jazyk: | angličtina |
| Rok vydání: | 1979 |
| Předmět: |
Physics
Nuclear and High Energy Physics 010308 nuclear & particles physics Charge (physics) Elementary particle [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] Kinetic energy 01 natural sciences 7. Clean energy Resonance (particle physics) Dipole 0103 physical sciences Nuclear fusion Neutron Atomic number Atomic physics 010306 general physics |
| Zdroj: | Zeitschrift für Physik A Zeitschrift für Physik A, Springer-Verlag, 1979, 291, pp.133-143 |
| ISSN: | 0340-2193 1434-601X |
| Popis: | We have measured for the 430 MeV86Kr+92.98Mo systems the triple differential cross sectiond3σ/dEdAdZ (E=kinetic energy,A=mass andZ=atomic number) of the reaction products in the angular range (θ=25, 45°). We focussed attention on a fast collective mode in deep inelastic reactions: the neutron excess or charge equilibration. This mode is shown to relax very quickly to equilibrium within a time scale of the order of 10−22s. It is shown that this collective degree of freedom exhibit a quantal behavior which can be seen in the observation of quantal fluctuations. The experimental results are discussed in terms of a simple equilibrium model. The giant dipole resonance of the composite system could be closely connected to this neutron excess mode. |
| Databáze: | OpenAIRE |
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