The European Physical Journal A

, Volume 45, Issue 2, pp 251–255 | Cite as

Prompt gamma radiation from fission fragments due to the Strutinsky-Denisov polarisation

  • F. F. KarpeshinEmail author
Regular Article - Theoretical Physics


The hard electric dipole radiation from fission fragments of 235U by thermal neutrons is predicted. The radiation arises due to the Strutinsky-Denisov-induced polarisation mechanism. The probability of the radiation is at the level of 0.0025 per fission, which is in agreement with experiment. The angular distribution exhibits left-right asymmetry with respect to the plane perpendicular to the neutron polarisation axis. That means that the emission of gamma quanta at the given angle depends on the neutron polarisation. The asymmetry is at the level of 10-3. This effect is similar to that observed earlier for gamma quanta in binary and alphas in ternary fission. The study of this effect will give information about dissipation of the collective energy of the surface vibration in fragments with large amplitude, and gives a picture of the process of snapping back the nuclear surface.


Angular Distribution Electric Dipole Electric Dipole Moment Asymmetry Parameter Fission Fragment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.University of Buenos AiresBuenos Aires CityArgentina
  2. 2.St. Petersburg State UniversitySaint PetersburgRussia

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