Detection of alpha-particle emitting isotopes

Details Detection of alpha-particle emitting isotopes Detection of alpha-particle emitting isotopes

2011-07-05

2011-07-05

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Plural signalling means

C250S390010, C250S395000, C250S370020, C250S370030

Reexamination Certificate

active

07973287

ABSTRACT:
A system and method for detection of alpha particles generated by a test material in proximity to a light atomic weight element. The system includes a neutron detector that is configured to detect a rate of generation of neutrons produced by an (alpha, n) reaction between the test material and the light atomic weight element. There is also at least one gamma-ray detector configured to measure a rate of generation of 511 keV gamma rays produced by an annihilation reaction triggered by a positron emission from a daughter product of the light atomic weight element. A comparator is configured to compare the rate of generation of neutrons and the rate of generation of 511 keV gamma rays.

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