Gamma-ray multiplicities and fission modes in Pb-208 (O-18,f) - art. no. 052701

Authors
Chubarian, GG Itkis, MG Kondratiev, NA Kozulin, EM Pashkevich, VV Pokrovsky, IV Rusanov, AY Salamatin, VS Schmitt, RP
Citation
Gg. Chubarian et al., Gamma-ray multiplicities and fission modes in Pb-208 (O-18,f) - art. no. 052701, PHYS REV L, 8705(5), 2001, pp. 2701
Citations number
46
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
8705
Issue
5
Year of publication
2001
Database
ISI
SICI code
0031-9007(20010730)8705:5<2701:GMAFMI>2.0.ZU;2-A
Abstract
Two components in the M-gamma(M) distribution were established in detailed measurements of mean gamma -ray multiplicities from fission fragments of Th -226. For the first time in the M-gamma(M) dependencies we were able to dis tinguish two components associated with primary and the final (after the ne utron evaporation) fission fragments, and show that at the scission point M y is extremely sensitive to symmetric and asymmetric modes of fission. Theo retical calculations of the pre-scission shapes of the fissioning nuclei co nfirm our conclusions.