Investigation of the distribution in the number of prompt. gamma. rays and their correlations with prompt neutrons in fission of /sup 236/U

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6589977

Danilov, M M; Katarzhnov, Y D; Nedopekin, V G; Rogov, V I

Fission of /sup 235/U by thermal neutrons has been studied. In each fission event semiconductor detectors were used to record two fragments, in coincidence with which four scintillation detectors recorded prompt ..gamma.. rays or fission neutrons identified by time of flight. The intensities of single detections of neutrons and ..gamma.. rays were measured, and also the intensities of detection of neutron--..gamma..-ray pairs and ..gamma..-ray pairs. The results of the measurements agree if one assumes that the spectra and angular distributions of the ..gamma.. rays do not depend on the number of ..gamma.. rays emitted. The standard deviation sigma(..nu../sub ..gamma../) of the number of prompt fission ..gamma.. rays ..nu../sub ..gamma../ from the average value sigma(..nu../sub ..gamma../) = 3.1 +- 0.1 was determined. The correlation coefficient rho/sub n//sub ..gamma../ between the numbers of prompt neutrons and ..gamma.. rays from fission was determined: rho/sub n//sub ..gamma../ = -0.32 +- 0.02. The data obtained are discussed from the point of view of fluctuations of the parameters which characterize fission at the scission point.

• Research Organization: Institute of Theoretical and Experimental Physics, State Commission on Use of Atomic Energy
• OSTI ID: 6589977
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 47:6; 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
BARYON REACTIONS
BARYONS
CAPTURE
COINCIDENCE METHODS
COMPOUND-NUCLEUS REACTIONS
COUNTING TECHNIQUES
DATA
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FERMIONS
FISSION
GAMMA RADIATION
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
INFORMATION
IONIZING RADIATIONS
ISOTOPES
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
PROMPT GAMMA RADIATION
RADIATIONS
RADIOISOTOPES
TARGETS
THERMAL NEUTRONS
URANIUM 235 TARGET
URANIUM 236
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES