Development of marijuana and tobacco detectors using potassium-40 gamma ray emissions
- Lawrence Livermore National Lab., CA (United States). Fission Energy and Systems Safety Program
- Customs Service, Washington, DC (United States)
Measurements were made at the Otay Mesa, Ca. border crossing between November 30 and December 4, 1992 to demonstrate proof of concept and the practicality of using potassium 40 (K40) gamma emissions to detect the presence of marijuana in vehicles. Lawrence Livermore National Laboratory (LLNL) personnel, with the assistance of the EPA, set up three large volume gamma ray detectors with lead brick shielding and collimation under a stationary trailer and pickup truck. Measurements were performed for various positions and quantities of marijuana. Also, small quantities of marijuana, cigarettes, and other materials were subjected to gamma counting measurements under controlled geometry conditions to determine their K40 concentration. Larger quantities of heroin and cocaine were subjected to undefined geometry gamma counts for significant K40 gamma emissions.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 52774
- Report Number(s):
- UCRL-JC-117771; CONF-940723-39; ON: DE95010797; TRN: AHC29515%%45
- Resource Relation:
- Conference: Annual meeting of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA (United States), 24-29 Jul 1994; Other Information: PBD: Jun 1994
- Country of Publication:
- United States
- Language:
- English
Similar Records
Passive inhalation of marijuana smoke: urinalysis and room air levels of delta-9-tetrahydrocannabinol
A new proof-of-principle contraband detection system