Measurement of Residual ^<60>Co Activity Induced by Atomic-bomb Neutrons in Nagasaki and Background Contribution by Environmental Neutrons

Search this Article

Author(s)

Abstract

Residual <sup>60</sup>Co activity in five steel samples induced by neutrons from the Nagasaki atomic bomb has been measured within about 1000 m from the hypocenter. The chemical separation of cobalt and nickel from steel samples was performed, and cobalt-enriched samples were prepared for all samples. Gamma-ray measurements were carried out with a low-background well-type germanium detector.<br> The gamma-ray spectra for five samples were compared with the spectrum of a control sample to ensure that the observed <sup>60</sup>Co was actually induced by A-bomb neutrons. The activation of cobalt by environmental neutrons was also investigated. It has been shown that the present <sup>60</sup>Co data are consistent with earlier Hashizume's data.<br>

Journal

  • Journal of Radiation Research

    Journal of Radiation Research 43(4), 387-396, 2002-12-17

    Journal of Radiation Research Editorial Committee

References:  21

Cited by:  2

Codes

  • NII Article ID (NAID)
    110002334204
  • NII NACSIS-CAT ID (NCID)
    AA00705792
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    04493060
  • NDL Article ID
    6430502
  • NDL Source Classification
    ZS45(科学技術--医学--放射線医学)
  • NDL Call No.
    Z53-P232
  • Data Source
    CJP  CJPref  NDL  NII-ELS  IR  J-STAGE  NDL-Digital 
Page Top