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Report No.

Nondestructive identification of isotopes using nuclear resonance fluorescence

Shizuma, Toshiyuki; Hayakawa, Takehito; Hajima, Ryoichi; Kikuzawa, Nobuhiro; Ogaki, Hideaki; Toyokawa, Hiroyuki*

Nondestructive identification of heavy isotopes concealed in a thick iron box has been demonstrated by using nuclear resonance fluorescence. A quasi-monochromatic photon beam produced by the collision of laser quanta with high energy electrons was used for resonant excitation of nuclear levels in $$^{206}$$Pb and $$^{208}$$Pb. By measuring the resonant $$gamma$$ rays emitted from $$^{206}$$Pb and $$^{208}$$Pb, each of these isotopes were clearly identified. The ratio of the effective thickness, i.e., concentration distribution, of these isotopes was deduced from the relative intensities of the measured NRF strengths.



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Category:Instruments & Instrumentation



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