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The effect of the right-left asymmetry is considered in the angulardistribution of gamma quanta from fission of U-235 by polarised thermalneutrons, which depends on the polarisation of the neutrons with respect to thegamma-fission plane. Electric dipole radiation from fission fragments arisingdue to the Strutinsky-Denisov induced polarisation mechanism may give rise tosuch an effect. Earlier, this mechanism was shown to fit the non-statisticalpart observed in the gamma spectrum from spontaneous fission of Cf-252. Thecalculated value of the magnitude of the asymmetry parameter is on the level of10$^{-4}$. That is in agreement with the current experimental data. A crucialexperiment to give a more definite picture of the concrete mechanism would bedetermination of the energy of the quanta responsible for the asymmetry.Detection of the quanta with the energy of ~5 MeV approaching the giant dipoleresonance is needed in order to identify prompt gamma rays emitted at the stageof fissioning.

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