巻号一覧
7 巻, 7 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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筒井 清二1964 年 7 巻 7 号 p. 236-242
発行日: 1964/07/20
公開日: 2009/09/29
ジャーナル フリーPDF形式でダウンロード (1027K) -
小森 久雄1964 年 7 巻 7 号 p. 243-246
発行日: 1964/07/20
公開日: 2009/09/29
ジャーナル フリーPDF形式でダウンロード (1085K) -
藤野 武夫1964 年 7 巻 7 号 p. 247-252
発行日: 1964/07/20
公開日: 2009/09/29
ジャーナル フリーThe calibration of a Pirani gauge has been performed for various gases of H2, N2, He, and A. The Pirani gauge usxl. for this calibration was constructed for the study of “the flow rates of various gases through narrow gaps at low pressures.” The gauge can be operated by a simple constant D. C. power supply. The calibration system consists of a large volume tank, a variable leak and a burette for measuring small flow rates of various gases at low pressure. The calibration curves obtained with large flow rates showed deviations from a straight line by 14% near the lowest pressure ; the deviation was found to be largest for N2 and smallest for H2. The cause for the deviation was investigated and concluded to be slow gauge responses for press re changes. The calibration curves with acaracys of 2% were obtained with the gas flow rates between 1. 5 and 2μHg /lsec. The pressure sensitivities of the gauge for the various gases were investigated by measuring the amounts of the heat cons 1mption. The results show in general agreement with the theory.抄録全体を表示PDF形式でダウンロード (801K) -
上田 隆三, 山本 靖彦1964 年 7 巻 7 号 p. 253-258
発行日: 1964/07/20
公開日: 2009/09/29
ジャーナル フリーThe aging effect of the electlical resistance of nickel, copper, and Ni-Cu films and resistance-strain characteristics (strain coefficient or gauge-factor K) are measured in a vacuum bell jar. These effects depend on the thickness of films. The gauge-factor K of relatively thick films tends to approach the value of the bulk one, and the resistance of films decreases with time just after the evaporation. The K-factot of a relatively thin film is larger than that of the bulk, and its resistance increases with time after the evaporation. The gauge-factor K of the films of intermediate thickness has a minimum value and the resistance varies gradually with time.
The imperfections of the films produced by evaporation or adsorption of gases are seemed to affect on the electrical and mechanical properties of the films.抄録全体を表示PDF形式でダウンロード (1086K)
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