Significant role of deformation in probing postsaddle nuclear dissipation with light particle emission

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.054609· OSTI ID:21389040

Ye, W ^[1]

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1. Department of Physics, Southeast University, Nanjing 210096, Jiangsu Province (China)

Using a one-dimensional Langevin model, we study the effects of deformation on the multiplicities of postsaddle neutrons, protons, alpha particles, and giant dipole resonance (GDR) gamma rays of a heavy fissioning system {sup 240}Cf as probes of postsaddle nuclear dissipation (beta). It is shown that postsaddle dissipation effects on these light particles have a significant deformation dependence. Furthermore, we find that the role of deformation depends on the type of the particle. It reduces the sensitive influence of beta on protons, alpha particles, and GDR gamma rays substantially, whereas it enhances the sensitivity of neutrons to beta. The results suggest that to accurately extract the postsaddle friction strength by comparing measured prescission particle multiplicities of heavy nuclei with calculations based on statistical models or stochastic equations like Langevin equations, it is important to take into account the deformation effects. The influence of model dimensionality is discussed.

• OSTI ID: 21389040
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevC.81.054609; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
CALIFORNIUM 240
DIPOLES
EMISSION
GAMMA RADIATION
GIANT RESONANCE
LANGEVIN EQUATION
MULTIPLICITY
NEUTRONS
NUCLEAR DEFORMATION
ONE-DIMENSIONAL CALCULATIONS
PROTONS
RESONANCE
SENSITIVITY
STATISTICAL MODELS
STOCHASTIC PROCESSES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
CALIFORNIUM ISOTOPES
CHARGED PARTICLES
DEFORMATION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUATIONS
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HEAVY NUCLEI
IONIZING RADIATIONS
ISOTOPES
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
MULTIPOLES
NUCLEI
NUCLEONS
RADIATIONS
RADIOISOTOPES