THE OVERVIEW OF THE JNDC FP DECAY DATA LIBRARY VERSION 2


Tadashi Yoshida

NAIG Nuclear Research Laboratory
4-1 Ukishima-cho, Kawasaki-ku, Kawasaki 210, Japan


Hitoshi Ihara, Jun-ichi Katakura, Kanji Tasaka

Japan Atomic Energy Research Institute
Tokai-mura, Ibaraki-ken 319-11, Japan


Ryuzo Nakasima

Department of Physics, Hosei University
Fujimi 2-17-1, Chiyoda-ku, Tokyo 102, Japan


The second version of the JNDC (Japanese Nuclear Data Committee) FP Decay Data Library has been completed. The new library contains the decay and fission-yield data for 1083 unstable and 147 stable fission product (FP) nuclides and the neutron cross-sections for about 200 nuclides among these. The decay data include the gamma-ray spectrum from each nuclide as well as the half-life and the average beta- and gamma-ray energies released per decay-event, Eβ and Eγ. The library, primarily for use in FP decay-heat calculations, will serve as an extensive data basis of radionuclides pertinent to nuclear power as well. The calculated decay-heat curves agree quite well with the measured data for Th-232, U-233, -235, -238, Pu-239 and -241.

KEYWORDS: decay heat, fission product, beta-decay, gamma-ray, summation calculation