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Proceedings Paper

Portable narcotics detector with identification capability
Author(s): Tumay O. Tumer; R. M. Pierce; K. C. Dotson; Joseph Richard Jadamec; Chih-Wu Su
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Paper Abstract

A portable hand held hidden substance detector has been developed and manufactured. Neutrons from a californium-252 source are emitted through the front face of the Compact Integrated Narcotics Detection Instrument (CINDI) and penetrate dense compartment materials with little change in energy, but are backscattered by hydrogen rich materials such as drugs. These backscattered neutrons can be readily detected. CINDI incorporates a highly sensitive detection scheme which permits the use of weak radioactive sources for safety without compromising detectability. CINDI is able to detect hydrogen-dense materials most effectively directly behind panels made of steel, wood, fiberglass, or even lead-lined materials. This makes it useful for inspecting marine vessels, ship bulkheads, automobiles, structure walls, or small sealed containers. The present CINDI version selectively detects hydrogen rich substances only. The new technique will detect both neutrons and gamma rays simultaneously. The backscatter mechanism of gamma rays and neutrons are sufficiently different that they complement each other and lead to a higher likelihood of identifying the concealed material.

Paper Details

Date Published: 6 October 1994
PDF: 11 pages
Proc. SPIE 2276, Cargo Inspection Technologies, (6 October 1994); doi: 10.1117/12.189175
Show Author Affiliations
Tumay O. Tumer, NOVA R&D, Inc. (United States)
R. M. Pierce, NOVA R&D, Inc. (United States)
K. C. Dotson, NOVA R&D, Inc. (United States)
Joseph Richard Jadamec, U.S. Coast Guard Research and Development Ctr. (United States)
Chih-Wu Su, U.S. Coast Guard Research and Development Ctr. (United States)

Published in SPIE Proceedings Vol. 2276:
Cargo Inspection Technologies
Andre H. Lawrence, Editor(s)

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