Mass distribution of fission fragments in symmetric photofission of $sup 235$U and $sup 237$Np

Journal Article · Sat Sep 01 04:00:00 EDT 1973 · At. Energ. (USSR), v. 35, no. 3, pp. 214-215

OSTI ID:4385936

Kondrat'ko, M Ya; Korinets, V N; Petrzhak, K A

To determine the precise shape of the mass distribution curve, the yields of six products of the symmetric and almost symmetric fission of /sup 237/ U by bremsstrahlung photons with a maximum energy of 14 MeV were measured. The results, which are compared in the article with similar data for /sup 237/Np and / sup 232/Th, verify the existence of separate groups of final fission products in a symmetrical field. Apparently, with an activation energy of about 10 MeV, mass number 236 is the critical value for the mass of the fissioning nucleus from the standpoint of resolution of this group in experimental curves of mass distribution. (2 figures, 1 table) (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-29-011545
• OSTI ID: 4385936
• Journal Information: At. Energ. (USSR), v. 35, no. 3, pp. 214-215, Journal Name: At. Energ. (USSR), v. 35, no. 3, pp. 214-215; ISSN AENGA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

*FISSION FRAGMENTS-- MASS
*PHOTONUCLEAR REACTIONS-- PHOTOFISSION
*URANIUM 235-- PHOTONUCLEAR REACTIONS
BREMSSTRAHLUNG
FISSION YIELD
MEV RANGE 10-100
N69161* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220--Nuclear Reactions & Scattering--Spontaneous & Induced Fission:734