A Coaxial Ge(Li) Gamma-Ray Spectrometer

概要

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A single-open-end coaxial type Ge(Li) γ-ray detector with an effective volume of 8.7cm<SUP>3</SUP> and a capacitance of 35pF was made by Li-drifting for 440hr at an applied voltage of 140V at 40 ?? in thermomodule-controlled constant-temperature water coolant. The FWHM energy resolution with an E810F preamplifier was 4.2 and 8.0keV for γ-rays of 122 and 1, 173keV respectively. The pulse height distributions of γ-rays from an irradiated natural U sample and <SUP>105</SUP>Rh isotope were measured.
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