[D19-22] 保障措置・計量管理技術

[D22] Demonstration of the Nuclear Resonance Fluorescence Integral Resonance Transmission Method for Assay of 239Pu in Spent and Melted Fuel

^〇Christopher T. Angell¹, Takehito Hayakawa¹, Toshiyuki Shizuma¹, Ryoichi Hajima¹, Brian Quiter², Bernhard Ludewigt², Hugon Karwowski^3,4, Grayson Rich^3,4 (1.Japan Atomic Energy Agency, 2.Lawrence Berkeley National Laboratory, 3.University of North Carolina at Chapel Hill, 4.Triangle Universities Nuclear Laboratory)

Keywords:Safeguards, Non-Destructive Assay, Nuclear Resonance Fluorescence

Non-destructive assay (NDA) of <SUP>239</SUP>Pu in spent nuclear fuel is possible using the integral resonance transmission (IRT) method. IRT measures the integral nuclear resonance fluorescence scattering on a mono-isotopic witness target following resonance absorption in nuclear fuel.  Verification of the IRT method was obtained in a demonstration experiment using <SUP>239</SUP>Pu.