Abstract
The purpose of this work is to measure the radiation emitted from the artificial radioactive substances existed in deep sea bottom. As the measurement system for radioactivity in deep sea, the small electric-cooled Ge detector introduced into the pressure vessel similarly to the conventional NaI detector was made up. The cooling test and the energy resolution test were carried out in water. It was confirmed that the Ge detector can be cooled about 5.8 hours to the temperature of liquid nitrogen and can be hold the energy resolution of 2.66 KeV to 1.33 MeV peak of {sup 60}Co. After the Ge detector was connected to the dolphin 3 K of remotely operated vehicle belonging to Japan Marine Science and Technology Center, the radioactivity measurement test was carried out in seawater. It was confirmed that the Ge detector can be measured the radiation from the natural radioactive substances in sea bottom. (author)
Yamamoto, Tadatoshi;
Shimizu, Toku;
[1]
Kozawa, Teruo;
Birumachi, Atsushi;
Senzaki, Toshihiko;
Katagiri, Masaki
- Japan Atomic Energy Research Inst., Mutsu, Aomori (Japan). Mutsu Establishment
Citation Formats
Yamamoto, Tadatoshi, Shimizu, Toku, Kozawa, Teruo, Birumachi, Atsushi, Senzaki, Toshihiko, and Katagiri, Masaki.
Development of Ge {gamma} ray detector system for radioactivity measurement in deep sea.
Japan: N. p.,
1999.
Web.
Yamamoto, Tadatoshi, Shimizu, Toku, Kozawa, Teruo, Birumachi, Atsushi, Senzaki, Toshihiko, & Katagiri, Masaki.
Development of Ge {gamma} ray detector system for radioactivity measurement in deep sea.
Japan.
Yamamoto, Tadatoshi, Shimizu, Toku, Kozawa, Teruo, Birumachi, Atsushi, Senzaki, Toshihiko, and Katagiri, Masaki.
1999.
"Development of Ge {gamma} ray detector system for radioactivity measurement in deep sea."
Japan.
@misc{etde_10147663,
title = {Development of Ge {gamma} ray detector system for radioactivity measurement in deep sea}
author = {Yamamoto, Tadatoshi, Shimizu, Toku, Kozawa, Teruo, Birumachi, Atsushi, Senzaki, Toshihiko, and Katagiri, Masaki}
abstractNote = {The purpose of this work is to measure the radiation emitted from the artificial radioactive substances existed in deep sea bottom. As the measurement system for radioactivity in deep sea, the small electric-cooled Ge detector introduced into the pressure vessel similarly to the conventional NaI detector was made up. The cooling test and the energy resolution test were carried out in water. It was confirmed that the Ge detector can be cooled about 5.8 hours to the temperature of liquid nitrogen and can be hold the energy resolution of 2.66 KeV to 1.33 MeV peak of {sup 60}Co. After the Ge detector was connected to the dolphin 3 K of remotely operated vehicle belonging to Japan Marine Science and Technology Center, the radioactivity measurement test was carried out in seawater. It was confirmed that the Ge detector can be measured the radiation from the natural radioactive substances in sea bottom. (author)}
place = {Japan}
year = {1999}
month = {Apr}
}
title = {Development of Ge {gamma} ray detector system for radioactivity measurement in deep sea}
author = {Yamamoto, Tadatoshi, Shimizu, Toku, Kozawa, Teruo, Birumachi, Atsushi, Senzaki, Toshihiko, and Katagiri, Masaki}
abstractNote = {The purpose of this work is to measure the radiation emitted from the artificial radioactive substances existed in deep sea bottom. As the measurement system for radioactivity in deep sea, the small electric-cooled Ge detector introduced into the pressure vessel similarly to the conventional NaI detector was made up. The cooling test and the energy resolution test were carried out in water. It was confirmed that the Ge detector can be cooled about 5.8 hours to the temperature of liquid nitrogen and can be hold the energy resolution of 2.66 KeV to 1.33 MeV peak of {sup 60}Co. After the Ge detector was connected to the dolphin 3 K of remotely operated vehicle belonging to Japan Marine Science and Technology Center, the radioactivity measurement test was carried out in seawater. It was confirmed that the Ge detector can be measured the radiation from the natural radioactive substances in sea bottom. (author)}
place = {Japan}
year = {1999}
month = {Apr}
}