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  1. F300 宇宙地球環境研究所
  2. F300b 紀要
  3. 名古屋大学年代測定研究
  4. 2

名古屋大学タンデトロンAMS14Cシステムの現状と利用(2017)

https://doi.org/10.18999/nagubc.2.79
https://doi.org/10.18999/nagubc.2.79
c9f4c231-85f6-4399-b767-e931f256acb2
名前 / ファイル ライセンス アクション
079-087_2017.pdf 079-087_2017.pdf (1.3 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2018-08-20
タイトル
タイトル 名古屋大学タンデトロンAMS14Cシステムの現状と利用(2017)
言語 ja
その他のタイトル
その他のタイトル Status and Applications of a Tandetron AMS System at Nagoya University in 2017
言語 en
著者 中村, 俊夫

× 中村, 俊夫

WEKO 79196

ja 中村, 俊夫

Search repository
南, 雅代

× 南, 雅代

WEKO 79197

ja 南, 雅代

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増田, 公明

× 増田, 公明

WEKO 79198

ja 増田, 公明

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小田, 寛貴

× 小田, 寛貴

WEKO 79199

ja 小田, 寛貴

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池田, 晃子

× 池田, 晃子

WEKO 79200

ja 池田, 晃子

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栗田, 直幸

× 栗田, 直幸

WEKO 79201

ja 栗田, 直幸

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山根, 雅子

× 山根, 雅子

WEKO 79202

ja 山根, 雅子

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西田, 真砂美

× 西田, 真砂美

WEKO 79203

ja 西田, 真砂美

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藤沢, 純平

× 藤沢, 純平

WEKO 79204

ja 藤沢, 純平

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方, 雨婷

× 方, 雨婷

WEKO 79205

ja 方, 雨婷

Search repository
徳丸, 誠

× 徳丸, 誠

WEKO 79206

ja 徳丸, 誠

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木田, 梨沙子

× 木田, 梨沙子

WEKO 79207

ja 木田, 梨沙子

Search repository
酢屋, 徳啓

× 酢屋, 徳啓

WEKO 79208

ja 酢屋, 徳啓

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北川, 浩之

× 北川, 浩之

WEKO 79209

ja 北川, 浩之

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Nakamura, Toshio

× Nakamura, Toshio

WEKO 79210

en Nakamura, Toshio

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Minami, Masayo

× Minami, Masayo

WEKO 79211

en Minami, Masayo

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Masuda, Kimiaki

× Masuda, Kimiaki

WEKO 79212

en Masuda, Kimiaki

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Oda, Hirotaka

× Oda, Hirotaka

WEKO 79213

en Oda, Hirotaka

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Ikeda, Akiko

× Ikeda, Akiko

WEKO 79214

en Ikeda, Akiko

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Kurita, Naoyuki

× Kurita, Naoyuki

WEKO 79215

en Kurita, Naoyuki

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Yamane, Masako

× Yamane, Masako

WEKO 79216

en Yamane, Masako

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Nishida, Masami

× Nishida, Masami

WEKO 79217

en Nishida, Masami

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Fujisawa, Junpei

× Fujisawa, Junpei

WEKO 79218

en Fujisawa, Junpei

Search repository
Fang, Yuting

× Fang, Yuting

WEKO 79219

en Fang, Yuting

Search repository
Tokumaru, Makoto

× Tokumaru, Makoto

WEKO 79220

en Tokumaru, Makoto

Search repository
Kida, Risako

× Kida, Risako

WEKO 79221

en Kida, Risako

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Suya, Tokunori

× Suya, Tokunori

WEKO 79222

en Suya, Tokunori

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Kitagawa, Hiroyuki

× Kitagawa, Hiroyuki

WEKO 79223

en Kitagawa, Hiroyuki

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
キーワード
主題Scheme Other
主題 accelerator mass spectrometry
キーワード
主題Scheme Other
主題 radiocarbon
キーワード
主題Scheme Other
主題 high-voltage spark
キーワード
主題Scheme Other
主題 beam-correction magnet
キーワード
主題Scheme Other
主題 high-voltage control system
キーワード
主題Scheme Other
主題 beam transmission of tandem accelerator
抄録
内容記述 An AMS system (Model 4130-AMS) dedicated to 14C measurements, built by High Voltage Engineering (HVE), B.V., the Netherlands, was delivered to Nagoya University in 1996/97. Acceptance tests of its performance on carbon-isotope-ratio measurements were completed in January of 1999, and routine measurements began in mid-2000. The number of targets measured was 330, 1430, 2077, 1003, 1,979, 1679, 1772, 1115, 1339, 866, 1300, 1701, 1449, 1634, 1351, 1741, 1156, 466 and 900 in each year from 1999 to 2017, respectively, and total number of targets measured by the end of December 2017 is 25,287. We briefly describe the maintenance processes of the AMS system in the year of 2017. The Tandetron AMS system at Nagoya University has encountered several problems in 2017. They are; (1) two big sparks seriously damaged the solid state RF driver for the high voltage generation, and the AMS system could not supply the high voltage of 2.5 MV used for 14C measurements. We replaced a damaged coil at the final part of the high-voltage power supply unit with a new coil; (2) a power supply unit for loading electrical current to correctly adjust the current for the recombinator magnet was in trouble. A resistance unit located at the end of current supply circuit was burnt out. We replaced it to a new one; (3) after a high-voltage spark, we could not apply high voltage to the accelerator. A control circuit board of supplying high voltage was checked and it was found out that the electrical board B-5-41-205-0001 was out of work. We replace the board to one repaired previously; (4) During the usual measurement of a graphite target, 12C3+, 13C3+ and 14C3+ decreased gradually in the last half of its measurement time of 30 minutes. The plus ion beam intensity of 13C3+ decreased from 200nA to 5nA in ten minutes, without any changes on its target current (corresponding to 13C- current). We first checked all the parameter values of the power supplies to the AMS system, but we could not find any changes from their nominal values. We finally concluded that something wrong has happened inside the accelerator tank, and decided to open the tank after 5 years of previously opening the tank. Owing to these problems, we can process only 900 graphite targets in 2017. In 2017, we also have carried out some application programs of 14C measurements at Nagoya University. Some of the results are included in this Proceedings volume.
言語 en
内容記述タイプ Abstract
出版者
言語 ja
出版者 名古屋大学宇宙地球環境研究所
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/nagubc.2.79
ID登録タイプ JaLC
書誌情報 ja : 名古屋大学年代測定研究

巻 2, p. 79-87, 発行日 2018-03-31
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