Projectile discrimination using a neutron source and the electron drift High-Resolution Gamma-Ray Telescope

Details Projectile discrimination using a neutron source and the electron drift High-Resolution Gamma-Ray Telescope Projectile discrimination using a neutron source and the electron drift High-Resolution Gamma-Ray Telescope

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988spie..879...37c&link_type=abstract

IN: Sensing, discrimination, and signal processing and superconducting materials and instrumentation; Proceedings of the Meeting

Computer Science

Gamma Ray Telescopes, Neutron Sources, Projectiles, Target Recognition, Electron Distribution, Monte Carlo Method

Scientific paper

The separation of large projectiles with heavy materials from decoys can be accomplished by using penetrating radiation that results in a characteristic photon emission spectrum. In this paper, a scheme for midcourse discrimination is presented which utilizes three principles: (1) a pulsed neutron source to 'radiograph' the projectile cloud through differential (n, gamma) capture on the massive projectiles, (2) use of a window in time between the arrival of primary photons and that of the primary neutrons from the source at a detector for detecting the photons that arise from capture of neutrons in the massive projectile, and (3) detection and discrimination of the different components of the projectile cloud using a modified version of the High-Resolution Gamma-Ray Telescope now under development. The heavy projectile material captures neutrons, allowing the eventual determination of its mass and material type. The decoys are not 'seen' by the neutrons, and the subsequent gamma emission comes from the massive absorbing material.

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