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Kuwabara, Jun; Kinoshita, Naoki; Tobinai, Kazuhito; Matsuno, Satoru; Oyokawa, Atsushi; Seki, Takeo; Yabuuchi, Noriaki
Dai-28-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.77 - 79, 2015/12
A Tandetron AMS system (JAEA-AMS-MUTSU) at Mutsu Office, Aomori Research and Development Center, Sector of Decommissioning and Radioactive Waste Management, JAEA, installed in 1997, has composed of 3 MV tandem accelerator and two beam lines (carbon and iodine). Status of the JAEA-AMS-MUTSU and trouble of ion source caused by deterioration of optical fiber cable are reported.
Kuwabara, Jun; Kinoshita, Naoki; Hamada, Akio; Tobinai, Kazuhito; Seki, Takeo
Dai-27-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.27 - 30, 2015/03
A Tandetron AMS system (JAEA-AMS-MUTSU) at Mutsu Office, Aomori Research and Development Center, Sector of Decommissioning and Radioactive Waste Management, JAEA, installed in 1997, has composed of 3 MV tandem accelerator and two beam lines (carbon and iodine). Status of the JAEA-AMS-MUTSU and trouble cases about ion source are reported.
Kabuto, Shoji; Kinoshita, Naoki; Tanaka, Takayuki; Kuwabara, Jun; Seki, Takeo
Dai-24-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.9 - 12, 2011/07
A Tandetron Accelerator Mass Spectrometer (AMS) manufactured by High Voltage Engineering Europa in Netherlands had been set up at the Mutsu office of Aomori Research and Development Center, Japan Atomic Energy Agency (JAEA) in 1997. This AMS features 3 MV Tandetron accelerator and two independence beamlines for 
C and 
I measurement. In this report, we describe the summary of the current status at 2010-2011.
C measurement at JAEA-AMS-MUTSUTanaka, Takayuki; Kabuto, Shoji; Kinoshita, Naoki; Seki, Takeo
Nagoya Daigaku Kasokuki Shitsuryo Bunsekikei Gyoseki Hokokusho, 22, p.169 - 173, 2011/03
An accelerator mass spectrometry at Mutsu office, Japan Atomic Energy Agency (JAEA AMS MUTSU) was established in 1997 and the routine operation of radiocarbon measurement was started from 1999. The radiocarbon was measured by 1,053 samples in 2010, and the number of radiocarbon measurements reached 10,342 samples since the routine operation. This AMS has adopted the open door policy for the general users from the fiscal year of 2006 and various researches have been in progress by many users. In this presentation, I introduce the current status of JAEA AMS MUTSU.
Tanaka, Takayuki; Kabuto, Shoji; Kinoshita, Naoki; Suzuki, Takashi; Kuwabara, Jun; Seki, Takeo
Dai-13-Kai AMS Shimpojiumu Hokokusho, p.129 - 132, 2011/01
An accelerator mass spectrometry at Aomori Research and Development Center, JAEA (JAEA-AMS-MUTSU) was established in 1997 and the routine operation of C and I measurement was started from 1999 and 2003, respectively. This AMS has adopted the open door policy for the general users from the fiscal year of 2006 and various researches have been in progress by many users. In this presentation, we introduce the status of JAEA-AMS-MUTSU. The total number of measurements has increased well for five years after the open door policy excluding in 2008. The reasons for the decrease in 2008 were that we had stopped the operation of AMS for about one and half months because the operation system of AMS was upgraded, and that we could not measure the C for several months because the amplifier of detector had broken. We had resolved this trouble and our AMS can measure smoothly both C and I.
Tanaka, Takayuki; Kabuto, Shoji; Kinoshita, Naoki; Suzuki, Takashi; Kuwabara, Jun; Seki, Takeo
Dai-23-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.113 - 116, 2010/11
An accelerator mass spectrometry at Aomori Research and Development Center, JAEA (JAEA-AMS-MUTSU) was established in 1997 and the routine operation of C and I measurement was started from 1999 and 2003, respectively. This AMS has adopted the open door policy for the general users from the fiscal year of 2006 and various researches have been in progress by many users. In this presentation, we introduce the status of JAEA-AMS-MUTSU in the fiscal year of 2009. The C and I were measured by 480 and 677 samples in the fiscal year of 2009, respectively. The total number of measurements has decreased by 716 samples from that of the fiscal year of 2008. The reasons for this decrease were that we had stopped the operation of AMS for about one and half months because the operation system of AMS was upgraded, and that we could not measure the C for several months because the amplifier of detector had broken. We had resolved this trouble and our AMS can measure smoothly both C and I.
TEM observation of growth process of zirconium hydride in zircaloy-4 during hydrogen ion implantationShinohara, Yasunari*; Abe, Hiroaki*; Iwai, Takeo*; Sekimura, Naoto*; Kido, Toshiya*; Yamamoto, Hiroyuki; Taguchi, Tomitsugu
Journal of Nuclear Science and Technology, 46(6), p.564 - 571, 2009/06
Times Cited Count：30 Percentile：87.31(Nuclear Science & Technology) observation during hydrogen ion implantation was performed with a TEM installed in an ion accelerator to investigate the growth process of Zr hydride in Zicaloy-4. To clarify the effect of radiation damage, some samples were irradiated with 4 MeV Ni
ions prior to hydrogen implantation. Growth processes of Zr hydrides accompanying the formation of dislocations were observed. The crystallographic relationship between the Zr matrix and Zr hydrides was identical with that found in previous studies: inter- and intragranular hydrides exhibiting a tendency to grow in the 
11
0
direction. This growth can be attributed to a shear mechanism. In specimens preirradiated with Ni ions, the growth rate of hydrides was suppressed, but the growth direction was not affected by radiation defects. It was also confirmed that the black spots induced by Ni ion irradiation grew during hydrogen ion implantation, suggesting the formation of hydrides at the defects.
Okoshi, Minoru; Takahashi, Tomoyuki*; Kimura, Hideo; ; Sakai, Akihiro; Yoshimori, Michiro; Yamamoto, Hideaki
Hoken Butsuri, 34(2), p.187 - 197, 1999/00
no abstracts in English
Adachi, Takeo; Ito, Mitsuo; ; Takeishi, Hideyo; ; ; ; ; ; ; et al.
JAERI-Tech 98-053, 46 Pages, 1998/12
no abstracts in English
Minami, Kentaro; Murakami, Hiroyuki;
Hoshasen, 13(3), p.18 - 28, 1987/00
no abstracts in English
Kabuto, Shoji; Kinoshita, Naoki; Tanaka, Takayuki; Kuwabara, Jun; Seki, Takeo
no journal, ,
A Tandetron Accelerator Mass Spectrometer (AMS) manufactured by High Voltage Engineering Europa in Netherlands had been set up at the Mutsu Office of Aomori Research and Development Center, Japan Atomic Energy Agency (JAEA) in 1997. This AMS is routinely measurements of the isotopic ratio of carbon (C/
C) and iodine (I/
I). Although the East Japan Earthquake occurred during Accelerator Tank maintenance in March 2011, AMS was fortunately safe. In this report, the summary of the current operational status at 2010-2011, the future plans and the problem are described.
Kuwabara, Jun; Tanaka, Takayuki; Kabuto, Shoji; Kinoshita, Naoki; Seki, Takeo
no journal, ,
Increase of the measurement of I/I isotope ratio in various environmental samples using accelerator mass spectrometer (JAEA-AMS-MUTSU) established by the Aomori Research and Development Center JAEA is expected for the purpose of investigating distribution of the iodine isotopes in environment with the release of radioactive materials by the Fukushima first Nuclear Power Plant accident. Background level of JAEA-AMS-MUTSU in iodine measurement was examined by measuring AgI crystal of iodargyrite. Approximately 11 counts per 60 minutes of the I background existed under the condition that there was not iodine in a sample. To reduce the memory effect in the measurement of the sample which has high isotope ratio, establishment of limit of the total counts was considered. The result of a measurement was hardly affected even if the limit of the total counts was made.
