安定な同位体を用いた遡及的線量測定方法

Title:

安定な同位体を用いた遡及的線量測定方法

Document Type and Number:

Japanese Patent JP5030600

Kind Code:

B2

Abstract:

To provide an improved method for retrospectively measuring neutron fluence in a sample exposed to radiation by measuring the amount of transformation or conversion of the isotope generated in the sample after the irradiation period.

This method is an alternative method for retrospectively measuring the neutron fluence in an irradiated sample having at least one kind of elements whose mass fraction is known. The improved method comprises the steps of obtaining the irradiated sample, measuring the sample and determining a relative existing amount of at least one isotope of at least one kind of elements depleted or generated by neutron induced transformation, and presuming the neutron fluence based on the known neutron cross section.

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Inventors:

Francis H. Radi
Arnold H. Ferro
Randy Gee Lot
Regis Pie Shogun

Application Number:

JP2007008187A

Publication Date:

September 19, 2012

Filing Date:

January 17, 2007

Export Citation:

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Assignee:

Westinghouse Electric Company LLC

International Classes:

G01T3/00; G01T1/02; G21C17/00

Domestic Patent References:

JP6348491A
JP2003215247A

Other References:

中西孝 ,II.事故後の周辺環境測定 II-2.環境物質の放射化率の測定と解析に基づく中性子線量評価 ,放医研環境セミナーシリーズ No. 28,放射線医学総合研究所,2001年11月,pp. 60-62
河野益近、小泉好延,臨界事故による被曝線量評価を目的としたJCO周辺民家の五円玉に含まれる亜鉛-65の測定,金属,アグネ技術センター,2000年,Vol. 70, No. 4,pp. 305-310

Attorney, Agent or Firm:

Hiroaki Sakai

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