Influence of scattering α particle on time spectra in explosive detection

he tie; chen yuan; an li; guo haiping; zheng pu; wang xinhua

Volume 22 Issue 10

Sep. 2010

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xiao shali, li miao, wang xi, et al. Accumulated-carrier screening effect based investigation for pixellated CdZnTe radiation detector[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

he tie, chen yuan, an li, et al. Influence of scattering α particle on time spectra in explosive detection[J]. High Power Laser and Particle Beams, 2010, 22.

xiao shali, li miao, wang xi, et al. Accumulated-carrier screening effect based investigation for pixellated CdZnTe radiation detector[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

he tie, chen yuan, an li, et al. Influence of scattering α particle on time spectra in explosive detection[J]. High Power Laser and Particle Beams, 2010, 22.

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Influence of scattering α particle on time spectra in explosive detection

1.
Institute of Nuclear Physics and Chemistry,CAEP,P.O.Box 919-213,Mianyang 621900,China

Publish Date: 2010-09-03

Abstract

Abstract

The resolution of time spectrum is an important factor to obtain the excellent prompt gamma spectrum in the explosive detection. In this paper, we consider the scattering of α particle in the D-T reaction chamber wall is the main reason to the resolution of time spectrum. A measured device of time spectra based on associated α particle technique was built. A cone-shaped α particle collimator was designed to restrain the gamma induced by the neutron which is correlated to the scattering α particle. Thus, the resolution of the time spectrum was improved. Measurements show that with and without the collimator, the resolutions of the time spectrum are 1.8 ns and 6.4 ns, respectively.
- explosive detection,
- time spectrum,
- associated α particle technique,
- deuterium tritium reaction

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