METHOD OF LATENT RADIATION SOURCE DETECTION Russian patent published in 2008 - IPC G01N23/00 

FIELD: physics.

SUBSTANCE: analysed sample is placed in front of the detector; radiation is recorded; detector pulses are amplified and transferred to display, thus between analysed sample and detector ball-shaped probe reciprocating perpendicularly and/or in parallel of detector surface is mounted. And by shadowgraph of ball-shaped probe knowing diameter and material of ball-shaped probe, distance from position-sensitive radiation-measuring instrument to the centre of ball-shaped probe, on the basis of triangle similarity, radiation source presence in analysed object, source type, direction to this source and distributed source size are evaluated.

EFFECT: express analysis of cargoes and materials; detection of latent source and direction.

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