TEMPORAL CHARACTERISTICS OF DELAYED NEUTRONS FOR 1 GEV PROTON INDUCED FISSION OF THE U-238

Authors & Affiliations

Egorov A.S.¹, Piksaikin V.M.¹, Gremyachkin D.E.¹, Mitrofanov K.V.¹, Mitrofanov V.F.¹, Samylin B.F.¹, Vayshnene L.A.², Moroz F.V.², Vorobyev A.S.², Shcherbakov O.A.²
¹A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia
²B.P. Konstantinov Petersburg Nuclear Physics Institute of RNC “Kurchatov Institute”, Gatchina, Russia

Gremyachkin D.E. - Research Engineer, A.I. Leypunsky Institute for Physics and Power Engineering; Contacts: 1, pl. Bondarenko, Obninsk, Kaluga reg, Russia, 249033. Tel. +7 (484) 399 8349; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Egorov A.S. – Researcher, A.I. Leypunsky Institute for Physics and Power Engineering
Piksaikin V.M. – Leading researcher, Cand. Sci. (Phys.-Math.), A.I. Leypunsky Institute for Physics and Power Engineering.
Mitrofanov K.V. – Head of Laboratory, A.I. Leypunsky Institute for Physics and Power Engineering.
Mitrofanov V.F. – Deputy Head of Department, A.I. Leypunsky Institute for Physics and Power Engineering.
Samylin B.F. – Senior Research Engineer, A.I. Leypunsky Institute for Physics and Power Engineering.
Vorobyev A.S. – Senior Researcher, Dr. Sci.(Phys.-Math.), Research Center "KI" FGBU PNPI.
Shcherbakov O.A. – Senior Researcher, Dr. Sci.(Phys.-Math.), Research Center "KI" FGBU PNPI.
Vayshnene L.A. – Senior Researcher, Cand. Sci. (Phys.-Math.), Research Center "KI" FGBU PNPI.
Moroz F.V. – Senior Researcher, Cand. Sci. (Phys.-Math.), Research Center "KI" FGBU PNPI.

Abstract

The method and experimental set up intended for measurements of temporal characteristics of delayed neutrons for fission of the ²³⁸U induced by relativistic protons were described in present work. Temporal dependence of delayed neutrons activity was obtained on the base of the method for interaction of relativistic protons from synchrocyclotron of PNPI (Gatchina) with ²³⁸U sample. Measured data were analyzed within the 8-group model of precursors of delayed neutrons with universal set of half-lives. A comparison of the present data on relative abundances with appropriate data of the other authors was made.

Keywords
delayed neutrons, relativistic protons, nucleus precursors, relative abundances, spallation reaction

Article Text (PDF, in Russian)

References

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UDC 539.173.84

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2016, issue 2, 2:1

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TEMPORAL CHARACTERISTICS OF DELAYED NEUTRONS FOR 1 GEV PROTON INDUCED FISSION OF THE U-238