The alpha particle emission from 90 to 140 MeV F-19+Ta-181 fusion-evaporation reactions has been studied. The comparisons of the experimental spectral shapes and multiplicities with statistical model predictions indicate a need to use an excitation energy dependent level-density parameter a = A/K in which K increases with excitation energy. This increase is more rapid than that in lower mass nuclei. The effect of this change in level. density on the prescission multiplicities in fission is significant.

ALPHA-PARTICLE EMISSION AS A PROBE OF THE LEVEL DENSITY IN HIGHLY EXCITED A-SIMILAR-TO-200 NUCLEI / Fabris, D.; Fioretto, E.; Viesti, G.; Cinausero, M.; Gelli, N.; Hagel, K.; Lucarelli, Franco; Natowitz, J. B.; Nebbia, G.; Prete, '. G.; Wada, R.. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - STAMPA. - 50:(1994), pp. R1261-R1264.

ALPHA-PARTICLE EMISSION AS A PROBE OF THE LEVEL DENSITY IN HIGHLY EXCITED A-SIMILAR-TO-200 NUCLEI

LUCARELLI, FRANCO;
1994

Abstract

The alpha particle emission from 90 to 140 MeV F-19+Ta-181 fusion-evaporation reactions has been studied. The comparisons of the experimental spectral shapes and multiplicities with statistical model predictions indicate a need to use an excitation energy dependent level-density parameter a = A/K in which K increases with excitation energy. This increase is more rapid than that in lower mass nuclei. The effect of this change in level. density on the prescission multiplicities in fission is significant.
1994
50
R1261
R1264
Fabris, D.; Fioretto, E.; Viesti, G.; Cinausero, M.; Gelli, N.; Hagel, K.; Lucarelli, Franco; Natowitz, J. B.; Nebbia, G.; Prete, '. G.; Wada, R.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/778380
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