T-odd effects in the binary fission of uranium induced by polarized neutrons

Oct 14, 2020, 6:10 PM


Poster report Section 2. Experimental and theoretical studies of nuclear reactions. Poster session 2 (part 2)


Gadir Ahmadov


T-odd effects in fission of heavy nuclei have been extensively studied during more than a decade in order to study the dynamics of the process. A collaboration of Russian and European institutes discovered the effects in the ternary fission in a series of experiments performed at the ILL reactor (Grenoble) [1-3] and the effects were carefully measured for a number of fissioning nuclei. The analogous effects for gammas and neutrons in fission of 235U and 233U were also measured [3-6] after the observation of T-odd effects for ternary particles accompanying the reaction 235U(n,f) induced by cold polarized neutrons. All experiments up to now were performed with cold polarized neutrons, which suggests a mixture of several spin states of the compound nucleus, the relative contributions of which are not well known. The measurements of gamma and neutron asymmetries in an isolated resonance of uranium are important in order to get “clean” data. Therefore, our team continues to carry out a series of experiments by polarized neutrons with different energies. The present work describes a number of our team’s measurements that include the results of T-odd effects in the fission of uranium isotopes by polarized neutrons with different energies at the POLI facility and the MEPHISTO beamline of the FRM2 reactor in Garching.

Primary author


Daniyar Berikov Yu.N. Kopatch (Joint Institute for Nuclear Research (JINR), Dubna, Russia.) Vadim Novitsky Dr Alexey Gagarsky (Petersburg Nuclear Physics Institute named by B.P.Konstantinov of NRC «Kurchatov Institute») Gevorg Danilyan Vladimir Hutanu Jens Klenke Sergey Masalovich Chao Deng

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