Isotope-specific detection of low density materials with mono-energetic (gamma)-rays

Albert, F ; Anderson, S G ; Gibson, D J ; Hagmann, C A ; Johnson, M S ; Messerly, M J ; Semenov, V A ; Shverdin, M Y ; Tremaine, A M ; Hartemann, F V ; Siders, C W ; McNabb, D P ; Barty, C J

关键词: COMPTON EFFECT;    DETECTION;    PHOTONS;    RESONANCE FLUORESCENCE;   

DOI  :  10.2172/950644
RP-ID  :  LLNL-TR-411369
PID  :  OSTI ID: 950644
Others  :  TRN: US0902045

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The first demonstration of isotope-specific detection of a low-Z, low density object, shielded by a high-Z and high density material using mono-energetic gamma-rays is reported. Isotope-specific detection of LiH shielded by Pb and Al is accomplished using the nuclear resonance fluorescence line of {sup 7}Li at 0.478 MeV. Resonant photons are produced via laser-based Compton scattering. The detection techniques are general and the confidence level obtained is shown to be superior to that yielded by conventional x-ray/{gamma}-ray techniques in these situations.