Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1997-08-18
1999-01-12
Glick, Edward J.
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
250371, 250395, G01T 134, G01T 136
Patent
active
058594361
ABSTRACT:
A germanium detector measures an energy spectrum of a gamma ray flux. The detector includes a 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. A method for determining a photonuclear reaction cross section using the germanium detector enables measurement of the energy dependence of a photonuclear reaction cross section at high resolution. The method employs a white gamma ray flux radiated to a nuclide. The germanium detector measures the spectrum of a transmission gamma ray flux transmitted through the nuclide. Peaks are specified in the obtained spectrum. An atomic nucleus can be transformed using a monochromatic gamma ray flux having an energy level corresponding to the peak.
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Harada Hideo
Sato Isamu
Doryokuro Kakunenryo Kaithatsu Jigyodan
Glick Edward J.
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