Activity measurement of super(85)Kr diluted by a large volume balloon technique

Activity measurement of super(85)Kr diluted by a large volume balloon technique

The National Metrology Institute of Japan (NMIJ) participated in the CCRI(II) Key-comparison of super(85)Kr activity measurement. The absolute internal gas-counting method was used, with a set of proportional counters of different length. The original super(85)Kr gas was diluted by a factor of 2x10...

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Veröffentlicht in:Applied radiation and isotopes 2010-08, Vol.68 (7-8), p.1340-1343
Hauptverfasser: Yunoki, Akira, Yamada, Takahiro, Kawada, Yasushi, Unno, Yasuhiro, Sato, Yasushi, Hino, Yoshio
Format: Artikel
Sprache:eng
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Zusammenfassung:The National Metrology Institute of Japan (NMIJ) participated in the CCRI(II) Key-comparison of super(85)Kr activity measurement. The absolute internal gas-counting method was used, with a set of proportional counters of different length. The original super(85)Kr gas was diluted by a factor of 2x10 super(5) in order to achieve the suitable activity concentration for the proportional counters. A new dilution method was introduced, based on a large-volume balloon and gravimetric determination of the dilution volume with small uncertainties.
ISSN:0969-8043
DOI:10.1016/j.apradiso.2009.12.030