Right-left asymmetry of radiation from fission induced by polarised neutrons

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dc.creatorKarpeshin, F. F.
dc.date2009-02-09
dc.date.accessioned2026-07-07T12:39:25Z
dc.date.available2026-07-07T12:39:25Z
dc.descriptionThe effect of the right-left asymmetry is considered in the angular distribution of gamma quanta from fission of U-235 by polarised thermal neutrons, which depends on the polarisation of the neutrons with respect to the gamma-fission plane. Electric dipole radiation from fission fragments arising due to the Strutinsky-Denisov induced polarisation mechanism may give rise to such an effect. Earlier, this mechanism was shown to fit the non-statistical part observed in the gamma spectrum from spontaneous fission of Cf-252. The calculated value of the magnitude of the asymmetry parameter is on the level of 10$^{-4}$. That is in agreement with the current experimental data. A crucial experiment to give a more definite picture of the concrete mechanism would be determination of the energy of the quanta responsible for the asymmetry. Detection of the quanta with the energy of ~5 MeV approaching the giant dipole resonance is needed in order to identify prompt gamma rays emitted at the stage of fissioning.
dc.description12 pages, 1 figure. Delivered as an invited talk at the XLI PNPI Winter School on the Nuclear and Particle Physics, St. Petersburg, Repino, 19-24 February 2007; ISINN-2008, June 11-14, 2008, Dubna, Russia
dc.identifierhttps://arxiv.org/abs/0902.1387
dc.identifierhttp://arxiv.org/abs/0902.1387
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219104
dc.subjectNuclear Theory
dc.titleRight-left asymmetry of radiation from fission induced by polarised neutrons
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