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DELAYED NEUTRONS AS A PROBE OF NUCLEAR CHARGE DISTRIBUTION IN FISSION OF HEAVY NUCLEI BY NEUTRONS

**Authors & Affiliations**

Isaev S.G., Piksaikin V.M., Kazakov L.E., Roshchenko V.A.

*State Scientific Centre - A.I. Leipunsky Institute for Physics and Power Engineering, Obninsk, Russia*

**Abstract**

A method of the determination of cumulative yields of delayed neutron precursors is developed. This method is based on the iterative least-square procedure applied to delayed neutron decay curves measured after irradiation of ^{235}U sample by thermal neutrons. Obtained cumulative yields in turns were used for deriving the values of the most probable charge in low-energy fission of the above-mentioned nucleus.

**Keywords**

cumulative yields, delayed neutron precursors, 12 delayed neutron group model, U-235, thermal neutrons, least-square procedure

**Article Text** (PDF, Translated by IAEA)

**References**

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**UDC 539.173.84**

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 1, 2001