Microscopic cold fission yields of {sup 252}Cf

Journal Article · Thu Apr 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.044317· OSTI ID:21388926

Mirea, M ^[1]; Delion, D S ^[1]; Sandulescu, A ^[2]

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1. National Institute of Physics and Nuclear Engineering, 407 Atomistilor, RO-077125 Bucharest-Magurele (Romania)
2. Academy of Romanian Scientists 54 Splaiul Independentei, RO-050094 Bucharest (Romania)

We show that the sharp maximum corresponding to {sup 107}Mo in the fragment distribution of the {sup 252}Cf cold fission is actually a Sn-like radioactivity, similar to other decay processes in which magic nuclei are involved, namely alpha decay and heavy cluster emission, also called Pb-like radioactivity. It turns out that the mass asymmetry degree of freedom has a key role in connecting initial Sn with the final Mo isotopes along the fission path. We investigate the cold rearrangement of nucleons within the framework of the two-center shell model in order to compute the cold valleys in the charge equilibrated fragmentation potential. The fission yields are estimated by using the semiclassical penetration approach. We consider 5 degrees of freedom, namely the interfragment distance, the shapes of fragments, the neck parameter, and mass asymmetry. We found an isomeric minimum between the internal and external barriers. It turns out that the inner cold valley of the total potential energy is connected to the doubly magic isotope {sup 132}Sn.

• OSTI ID: 21388926
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE NUCLEI
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
APPROXIMATIONS
ASYMMETRY
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCULATION METHODS
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
COLD FISSION
DECAY
DEGREES OF FREEDOM
DISTRIBUTION
ELEMENTARY PARTICLES
EMISSION
ENERGY
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
FISSION
FISSION YIELD
FRAGMENTATION
HADRONS
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPES
MAGIC NUCLEI
MASS
MATHEMATICAL MODELS
MOLYBDENUM 107
MOLYBDENUM ISOTOPES
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR REACTION YIELD
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
POTENTIAL ENERGY
RADIOACTIVITY
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SEMICLASSICAL APPROXIMATION
SHELL MODELS
SPONTANEOUS FISSION RADIOISOTOPES
TIN 132
TIN ISOTOPES
YEARS LIVING RADIOISOTOPES
YIELDS