Neutron correlations in spontaneous fission of Cf 252
1974; American Institute of Physics; Volume: 9; Issue: 2 Linguagem: Inglês
10.1103/physrevc.9.632
ISSN1538-4497
Autores Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoThe variance and covariance of the neutron distributions in fission fragments of $^{252}\mathrm{Cf}$ have been measured as a function of the fragment mass and total kinetic energy. The neutrons were detected by a time-of-flight technique. The covariance results indicate that there is no change in the degree of viscosity in the transition of the fissioning nucleus to the scission point as a function of the total excitation energy. There are some discrepancies between various features of the neutron evaporation cascade determined in our experiment and results of standard evaporation calculations. No simple explanation of these discrepancies is offered.[RADIOACTIVITY, FISSION $^{252}\mathrm{Cf}$(sf); measured variance and covariance of $\ensuremath{\gamma}(A,E)$ of the two fragments.]
Referência(s)