Study of the anisotropy of prompt neutrons from spontaneous fission of /sup 252/Cf

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:7064275

Seeliger, D; Maerten, H; Neubert, W; Richter, D

With the use of a high-efficiency spectrometer the absolute yields of neutrons from the /sup 252/Cf nucleus have been measured in the energy range from 2 to 18 MeV at angles 0 and 90/sup 0/ with respect to the fission axis. The anisotropy and the shape of the neutron spectrum are compared with calculations in the framework of statistical models. In the spectrum measured in the plane perpendicular to the fission axis, in the range above 4 MeV, a substantially lower probability of neutron emission is observed in comparison with the previously published data. All the measured neutron distributions are reproduced in the calculations in which neutrons were assumed to be evaporated from the fully accelerated fragments. The upper limit for the contribution of scission neutrons was estimated as 5%.

• Research Organization: Technical University, Dresden, GDR
• OSTI ID: 7064275
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 47:3; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

652020* -- Nuclear Properties & Reactions
A=220 & above
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ANGULAR DISTRIBUTION
ANISOTROPY
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
DATA ANALYSIS
DECAY
DISTRIBUTION
ENERGY RANGE
ENERGY SPECTRA
EVEN-EVEN NUCLEI
FISSION
HEAVY NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON SPECTRA
NUCLEAR REACTIONS
NUCLEI
RADIOISOTOPES
SPECTRA
SPONTANEOUS FISSION
STATISTICAL MODELS
YEARS LIVING RADIOISOTOPES