Combination neutron-gamma ray detector
First Claim
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1. In a system for detecting combined neutron and gamma radiation and distinguishing therebetween, the method comprising:
- a. Providing a detector for a single photomultiplier, which detector includes a first phosphor material which scintillates primarily in response to neutron radiation and a second phosphor material which scintillates primarily in response to gamma radiation,b. Utilizing a distinguishing characteristic of the scintillations of said first and second phosphors to produce a signal in response to scintillations of one of said phosphors andc. Manipulating an output selection means into which an output of the photomultiplier has been introduced as an input by said signal to produce an output from said output selection means corresponding to the scintillations of said one phosphor.
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Abstract
A radiation detection system capable of detecting neutron and gamma events and distinguishing therebetween. The system includes a detector for a photomultiplier which utilizes a combination of two phosphor materials, the first of which is in the form of small glass beads which scintillate primarily in response to neutrons and the second of which is a plastic matrix which scintillates in response to gammas. A combination of pulse shape and pulse height discrimination techniques is utilized to provide an essentially complete separation of the neutron and gamma events.
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Citations
12 Claims
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1. In a system for detecting combined neutron and gamma radiation and distinguishing therebetween, the method comprising:
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a. Providing a detector for a single photomultiplier, which detector includes a first phosphor material which scintillates primarily in response to neutron radiation and a second phosphor material which scintillates primarily in response to gamma radiation, b. Utilizing a distinguishing characteristic of the scintillations of said first and second phosphors to produce a signal in response to scintillations of one of said phosphors and c. Manipulating an output selection means into which an output of the photomultiplier has been introduced as an input by said signal to produce an output from said output selection means corresponding to the scintillations of said one phosphor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a system for detecting combined neutron and gamma radiation and distinguishing therebetween, the apparatus comprising:
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a. A single photomultiplier, b. A detector for said single photomultiplier including a first material which scintillates primarily in response to neutron radiation and a second material which scintillates primarily in response to gamma radiation, c. A discriminator means operatively connected to an output of said multiplier for producing a signal in response to scintillation of one of said materials and d. A gate means operatively connected to the output of said discriminator means and to another output of said single photomultiplier to produce an output corresponding to the scintillations of said one material. - View Dependent Claims (9, 10, 11, 12)
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Specification