Published 1981
| Version v1
Report
Recent progress in fission at saddle point and scission point
Creators
- 1. CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Service de Physique Nucleaire a Moyenne Energie
Description
High resolution measurements of 230Th and 232Th fission cross sections for neutrons exhibit a fine structure. Such a structure is interpreted as a superposition of two rotational bands in the third, asymmetric, well of the fission barrier. The fragment mass distribution in the thermal fission of 235U and 233U does not show any even-odd effect, even at the highest kinetic energies. This is the mark of a strong viscosity in the descent from saddle point to scission point
Abstract (French)
Les mesures a haute resolution des sections efficaces de fission de 230Th et 232Th pour des neutrons font apparaitre une structure fine. Celle-ci est interpretee comme la superposition de deux bandes de rotation dans le troisieme puits, asymetrique, de la barriere de fission. La distribution des masses des fragments dans la fission thermique de 235U et 233U ne montre pas d'effet pair-impair, meme aux energies cinetiques les plus elevees. Ceci est la marque d'une viscosite importante dans la descente du point selle au point de scissionAdditional details
Additional titles
- Original title (French)
- Progres recents dans la fission au point selle et au point de scission
Publishing Information
- Imprint Title
- 6. Biennial session on nuclear physics, Aussois, 2-6 February 1981
- Imprint Pagination
- 500 p.
- Journal Page Range
- p. S14.1-S14.5.
- Report number
- LYCEN--8102
Conference
- Title
- 6. Biennial session on nuclear physics.
- Dates
- 2 - 6 Feb 1981.
- Place
- Aussois, France.
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 13652674
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- FISSION; FISSION BARRIER; MEV RANGE 01-10; NEUTRON REACTIONS; ROTATIONAL STATES; THORIUM 230 TARGET; THORIUM 232 TARGET
- Descriptors DEC
- BARYON REACTIONS; ENERGY; ENERGY LEVELS; ENERGY RANGE; EXCITED STATES; HADRON REACTIONS; MEV RANGE; NUCLEAR REACTIONS; NUCLEON REACTIONS; POTENTIAL ENERGY; TARGETS
Optional Information
- Notes
- Imprint:6. Session d'etudes biennale de physique nucleaire, Aussois, 2-6 fevrier 1981.