Process and apparatus for detecting presence of plant substances

Kirby, John A

Title: Process and apparatus for detecting presence of plant substances

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Abstract

An apparatus and process for detecting the presence of plant substances in a particular environment which comprises the steps of: measuring the background K40 gamma ray radiation level in a particular environment with a 1.46 MeV gamma ray counter system; measuring the amount of K40 gamma ray radiation emanating from a package containing a plant substance being passed through an environment with a counter; and generating an alarm signal when the total K40 gamma ray radiation reaches a predetermined level over and above the background level.

Inventors:

Kirby, John A ^[1]

Las Vegas, NV

Issue Date:: 1991-01-01

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

OSTI Identifier:: 867780

Patent Number(s):: 5008539

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2223/01 - by radioactivity, nuclear decay
G01N2223/202 - isotopes
G01N2223/205 - natural source
G01N2223/304 - electric circuits, signal processing
G01N2223/5055 - scintillation crystal coupled to PMT
G01N23/00 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00

G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V5/0075 - {Passive interrogation

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: process; apparatus; detecting; presence; plant; substances; particular; environment; comprises; steps; measuring; background; k40; gamma; ray; radiation; level; 46; mev; counter; amount; emanating; package; containing; substance; passed; generating; alarm; signal; total; reaches; predetermined; alarm signal; radiation level; ground level; gamma ray; predetermined level; particular environment; radiation emanating; ray radiation; package containing; plant substances; /250/

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                    Kirby, John A. Process and apparatus for detecting presence of plant substances.  United States: N. p., 1991. 
        Web.

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                    Kirby, John A. Process and apparatus for detecting presence of plant substances.  United States.

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                    Kirby, John A. Tue .  
        "Process and apparatus for detecting presence of plant substances".  United States.  https://www.osti.gov/servlets/purl/867780.

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@article{osti_867780,

  title        = {Process and apparatus for detecting presence of plant substances},

  author       = {Kirby, John A},

  abstractNote = {An apparatus and process for detecting the presence of plant substances in a particular environment which comprises the steps of: measuring the background K40 gamma ray radiation level in a particular environment with a 1.46 MeV gamma ray counter system; measuring the amount of K40 gamma ray radiation emanating from a package containing a plant substance being passed through an environment with a counter; and generating an alarm signal when the total K40 gamma ray radiation reaches a predetermined level over and above the background level.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1991},

  month        = {1}

}

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