巻号一覧
28 巻, 12 号
選択された号の論文の4件中1～4を表示しています
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石丸 肇, 百瀬 丘, 成島 勝也, 水野 元, 金沢 健一, 久保 富夫, 渡部 広美, 小林 正典, 堀越 源一1985 年 28 巻 12 号 p. 867-890
発行日: 1985/12/20
公開日: 2009/09/29
ジャーナル フリーThe first truly all-aluminum alloy ultrahigh vacuum system for an electron-positron accumulation ring is described. The ultimate pressure, the order of 10-8 Pa, was obtained without any baking or discharge cleaning. For a time integrated beam current of 15 A.h, the pressure rise due to synchrotron radiation was 2×10-8 Pa/mA and the maximun beam life time was about 2hours for 10mA. We have no problem essentially in the all-aluminum vacuum system. The present system satisfied conditions such as high performance, high reliability, impedance matching, simplicity, low wasted space between magnets, small size, low residual radioactivity and low cost.抄録全体を表示PDF形式でダウンロード (4330K) -
大越 正敏, 小田 真爾, 本多 茂男, 楠田 哲三1985 年 28 巻 12 号 p. 891-897
発行日: 1985/12/20
公開日: 2009/09/29
ジャーナル フリーCrystal growth is investigated in CoCr films sputtered with applying negative substrate bias voltage VB. Saturation magnetization and perpendicular magnetic anisotropy decrease with increasing VB which comes from more uniform mixing of Co and Cr. Crystal growth is enhanced by applying about -75V bias accompanying an increment of c-axis orientation. Different shape in magnetic hysteresis loop between zero bias films in which Cr segregates around columns and -75 V bias films including grownup crystals suggests different mode in the magnetization process. Magnetic domain structure is observed by Bitter technique in the two types of CoCr films in which magnetization process is thought to be a rotational mode and a wall displacement mode. However, Bitter pattern is the same and composed of dotted contrast in the both films suggesting that the magnetization localizes in the columns.抄録全体を表示PDF形式でダウンロード (1444K) -
平田 正紘, 磯貝 秀明, 国分 清秀, 小野 雅敏1985 年 28 巻 12 号 p. 898-903
発行日: 1985/12/20
公開日: 2009/09/29
ジャーナル フリーThe influence of operational conditions of a spinning rotor gauge on its accuracy was studied in order to clarify the performance of the gauge as a transfer standard gauge or a secondary standard gauge. The lower limit of measuring pressure of the gauge was affected by its offset pressure resulting from setting angle of the sensor, external vibration and thermal effects. One of the thermal effects on the offset pressure, which was evident just after starting of operation, was explained from the temperature change of the sensor head. The gauge sensitivity in high pressure region was measured by using a diaphragm gauge as a reference gauge. It was confirmed that the accuracy of the spinning rotor gauge was kept 1% between 10-3 to 10 Pa for long term.抄録全体を表示PDF形式でダウンロード (933K) -
堀 洋一郎, 野田 信明, 赤石 憲也, 宮原 昭1985 年 28 巻 12 号 p. 904-909
発行日: 1985/12/20
公開日: 2009/09/29
ジャーナル フリーA surface analysis station was designed and constructed to carry out a TEXTOR-Japan collaboration research plan on plasma wall interaction in TEXTOR tokamak. A large part of the vacuum vessel of the station was made of A6063 aluminum alloy and the vacuum system consists of a sputter ion pump with titanium getter, a turbomolecular pump and an oil rotary pump. Ultimate vacuum pressure less than 3×10-7 Pa was achieved routinely after baked out at maximum temperature of 120°C for 15 hrs. For in-situ AES observation of sample surfaces, a CMA and an ion-etching gun are installed in the station. A total of 12 samples can be installed and each sample can be transferred to analysis position and plasma boundary by a manipulator and a transporter. The station was applied to investigate the wall surface due to in-situ carbon coating. In this paper an actual performance of the station is described, and some experimental data on AES observation are introduced. The problems necessary for technical improvement are pointed out and discussed.抄録全体を表示PDF形式でダウンロード (769K)
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