著者

土屋 武彦 法村 俊之 山本 久夫 畠山 智

出版者

Japan Health Physics Society

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.20, no.3, pp.279-284, 1985 (Released:2010-02-25)

参考文献数

10

被引用文献数

2 1

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The radiations emitted from the front surface of CRT of a color-television and a personal-computer display were measured by GM-counter. No difference was observed in the radiation dose between the cases with and without application of a high voltage to the CRT. The radiations were also measured by Si- and Ge-semiconductor spectrometers. It was found that the radiations emitted from CRT were composed of β- and γ-rays, and were essentially emitted from 40K and the nuclides of uranium- and thorium- series contained within the front glass of CRT. The exposure dose rate of these radiations at 50cm from the surface of CRT was, however, less than 1.6×10-3mrem/hr, and it was practically negligible in comparison with that of natural background radiations.