Germanium detector
AssigneeDoryokuro Dakunenryo Kaihatsu Jigyodan
InventorsHideo Harada, Isamu Sato
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Abstract
A germanium detector measures an energy spectrum of gamma ray flux. The detector includes a copper cooling layer continuous over a periphery of the columnar germanium crystal. The cooling layer reduces current leakage induced by heat, so that high energy gamma rays can be precisely detected. A combination of a plurality of germanium crystal bodies connected one another to form the germanium crystal of at least 20 cm leads to a more precise detection of high energy gamma rays.
Claims7
A germanium detector comprising:
- a housing;
- a germanium crystal contained in the housing, said crystal having two ends and a peripheral surface extending between the two ends, said crystal further extending in an incidence direction of a gamma ray flux for detecting an energy spectrum of the gamma ray flux;
- and
- a copper cooling layer continuous around the peripheral surface of the germanium crystal.
A germanium detector as defined in claim 5, wherein said BGO scintillator has a thickness of at least 4 cm.
A germanium detector comprising:
- a housing;
- a germanium crystal contained in a columnar shape and of 20 cm length in the incidence direction contained in said housing, said crystal having two ends and a peripheral surface extending between the two ends, said crystal further extending in an incidence direction of a gamma ray flux for detecting an energy spectrum of the gamma ray flux;
- and
- a copper cooling layer continuous around the peripheral surface of the germanium crystal.
Dependencies are inferred from the claim text.