Fragment angular momenta in alpha-induced fission of /sup 238/U

Journal Article · Sat Oct 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.1787· OSTI ID:7064282

Tomar, B S; Goswami, A; Das, S K; Srivastava, B K; Guin, R; Sahakundu, S M; Prakash, S

Fragment angular momenta are deduced from the radiochemically determined independent isomeric yield ratios of the antimony isotopes /sup 126,128,130/Sb in the alpha-particle-induced fission of /sup 238/U at various initial excitation energies (18.3--30.2 MeV) and angular momenta (7.86--13.9(h/2..pi..)). It is found that the fragment angular momenta increase with increasing excitation energy and angular momentum of the fissioning nucleus. Calculations of fragment angular momenta are performed based on the Fermi gas approximation for the fissioning nucleus, taking into account the contribution of fissioning nucleus' angular momentum into that of the fragment. The calculated values agree reasonably well with the experimental values indicating that the fragment angular momenta increase with the increasing initial excitation energy and angular momentum of the fissioning nucleus, with the former playing the dominant role through increased fragment moment of inertia and temperature.

• Research Organization: Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Bombay 400085, India
• OSTI ID: 7064282
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651720 -- Nuclear Properties & Reactions
A=90-149
Experimental
652020* -- Nuclear Properties & Reactions
A=220 & above
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ALPHA REACTIONS
ANGULAR MOMENTUM
ANTIMONY 126
ANTIMONY 128
ANTIMONY 130
ANTIMONY ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCUTTA CYCLOTRON
CHARGE DISTRIBUTION
CHARGED-PARTICLE REACTIONS
CHEMISTRY
CYCLIC ACCELERATORS
CYCLOTRONS
DAYS LIVING RADIOISOTOPES
DETECTION
ENERGY
ENERGY LEVELS
EVEN-EVEN NUCLEI
FERMI GAS MODEL
FISSION
FISSION FRAGMENT DETECTION
HALF-LIFE
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETIC ENERGY
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
MOMENT OF INERTIA
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
RADIATION DETECTION
RADIOCHEMISTRY
RADIOISOTOPES
URANIUM 238
URANIUM ISOTOPES
VARIABLE ENERGY CYCLOTRONS
YEARS LIVING RADIOISOTOPES