Study on Isotope Imaging by using Nuclear Resonance Fluorescence induced by Laser Compton Scattering Gamma-ray Beam

点击翻译按钮获取中文摘要

Experiments on non-destructive 2D and 3D isotope imaging based on the Nuclear Resonance Fluorescence have been performed. A wedge shape (30mmx30mmx10mm) of Lead was sealed inside a 15mm thick iron box and was shot by the Laser-Compton back-Scattering gamma-ray beam whose top energy was 5.6 MeV and energy width of about 5%. A large volume HPGe detector was employed to detect the NRF gamma-ray scattered from 208Pb (5.512MeV). The target material was scanned by 10 mm step in horizontal and in vertical direction and we successfully obtained the 2D isotope image. We also succeeded to extract the thickness information of target isotope from numerical evaluation. Consequently, we succeeded to obtain a 3D isotope (208Pb) image destructively by using our proposed method (NRF method)