Miniature Neutron-Alpha Activation Spectrometer

Details Miniature Neutron-Alpha Activation Spectrometer Miniature Neutron-Alpha Activation Spectrometer

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..632..101r&link_type=abstract

UNATTENDED RADIATION SENSOR SYSTEMS FOR REMOTE APPLICATIONS. AIP Conference Proceedings, Volume 632, pp. 101-112 (2002).

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X- And Gamma-Ray Spectroscopy, Activation Analysis And Other Radiochemical Methods

Scientific paper

We are developing a miniature neutron-alpha activation spectrometer for in-situ analysis of chem-bio samples, including rocks, fines, ices, and drill cores, suitable for a lander or Rover platform for Mars or outer-planet missions. In the neutron-activation mode, penetrating analysis will be performed of the whole sample using a γ spectrometer and in the α-activation mode, the sample surface will be analyzed using Rutherford-backscatter and x-ray spectrometers. Novel in our approach is the development of a switchable radioactive neutron source and a small high-resolution γ detector. The detectors and electronics will benefit from remote unattended operation capabilities resulting from our NEAR XGRS heritage and recent development of a Ge γ detector for MESSENGER. Much of the technology used in this instrument can be adapted to portable or unattended terrestrial applications for detection of explosives, chemical toxins, nuclear weapons, and contraband.

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