Radioactive Nuclide Identification of a Fall-Out Sample in Korea

放射能 落塵의 核種檢出의 一例

  • Kim, Chong-Kuk (Department of Chemistry, Atomic Energy Research Institute)
  • 김종국 (原子力硏究所 化學硏究室)
  • Published : 19621200

Abstract

A tiny dust found at the balcony of the Institute indicated about 8,0000 counts per minute by T.G.C.-2 Geiger-Muller tube (1.8mg/$cm^2$ window-thickness) at the distance of 2cm from the window. The main fission fragments, as identified by the present analysis, are 12.5day Ba-140 and 33.1 day Ce-141. The gamma energies were determined using $2"{\times}2"$ NaI(Tl) scintillation detector connected to RCL-256 channel pulse heigt analyzer. The beta energies were evaluated by Feather plot.

Keywords

References

  1. 放射化學 崔相嶪;金鍾國(共譯)
  2. Radiochemical Studies: The Fission Products v.III C. D. Coryell;N. Sugarman
  3. NAS-NS 3020 The Radiochemistry of The Rare Earths, Scandium, Yttrium, and Actinium P.C. Stevenson;W.E. Nervik
  4. Radiological Health Hand Book S. Kinsman;F.D. Anderson;R. S. Cleveland;B.L. Harless;C.F. Henke
  5. Rev. Mod. Phys. v.30 D. Strominger;J.M. Hollander;G.T. Seaborg