APPARATUS AND METHOD FOR NEUTRON DETECTION WITH NEUTRON-ABSORBING CALORIMETRIC GAMMA DETECTORS

An apparatus for detecting neutron radiation includes a gamma ray scintillator having an inorganic material with an attenuation length Lg of less than 10 cm for gamma rays of 5 MeV energy to provide for high gamma ray stopping power for energetic gamma rays within the -gamma ray scintillator. The ga...

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Bibliographic Details
Main Authors HERBACH CLAUS MICHAEL, STEIN JUERGEN, PAUSCH GUNTRAM
Format Patent
LanguageEnglish
Published 29.03.2012
Subjects
MEASUREMENT OF NUCLEAR OR X-RADIATION
MEASURING
PHYSICS
TESTING
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Summary:An apparatus for detecting neutron radiation includes a gamma ray scintillator having an inorganic material with an attenuation length Lg of less than 10 cm for gamma rays of 5 MeV energy to provide for high gamma ray stopping power for energetic gamma rays within the -gamma ray scintillator. The gamma ray scintillator includes components with a product of neutron capture cross section and concentration leading to an absorption length Ln for thermal neutrons which is larger than 0.5 cm but smaller than five times the attenuation length Lg for 5 MeV gammas, the gamma ray scintillator having a diameter or edge length of at least 50% of Lg. The apparatus includes an evaluation device to determine the amount of light, detected by a light detector for one scintillation event The evaluation device classifies detected radiation as neutrons when the measured total gamma energy Esum is above 2,614 MeV.
Bibliography:Application Number: US200913376609