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Volume 46, Issue 9
Displaying 1-15 of 15 articles from this issue
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Yutaka TAKAGI1977 Volume 46 Issue 9 Pages 855
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Tsutomu YABUZAKI, Toru OGAWA1977 Volume 46 Issue 9 Pages 856-871
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
JOURNAL FREE ACCESSOptical pumping of gaseous atoms in the ground states and in the excited states is reviewed. We present at first important phenomena observed in optical pumping experiments with a circularly or linearly polarized light, classifying the various perturbations on the Zeeman substates, such as perturbations of resonant or nonresonant light, static magnetic field, radio-frequency fields and atomic collisions. Recent studies on the applications to the frequency standard and to the measurements of extremely weak magnetic fields are also shown. We present finally on optical pumping with lasers, which has been extensively studied in recent years.View full abstractDownload PDF (1397K) -
Yoshiaki KAMIGAKI1977 Volume 46 Issue 9 Pages 872-878
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
JOURNAL FREE ACCESSOxide growth kinetics of SiO2 films grown on silicon in an O2/N2 mixture is empirically studied. It is found that a parabolic law is obtained at 10-2 atm of oxygen partial pressure PO., and an inverse-logarithmic law at 10-3 atm. The Mott-Cabrera oxidation rate equation is adapted to the thermal oxidation of silicon in the case of P02≥10-2 atm, and the Mott-Cabrera's rate constants are determined. Finally, a value of 1. 90 eV is derived as the activation energy of silicon atoms entering into the oxide.View full abstractDownload PDF (523K) -
Shin-ichi KOMATSU, Akinori WATABE, Hiroyoshi SAITO1977 Volume 46 Issue 9 Pages 879-885
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
JOURNAL FREE ACCESSLaser Doppler velocimetry is applied to the measurement of sedimentation velocity of solid particles and details of sedimentation phenomenon are investigated. Every crossing of a particle through the probe volume of the velocimeter generates a burst signal which contains the Doppler beat frequency corresponding to its velocity. A histogram of the sedimentation velocity is obtained by counting the number of burst signals after selecting the frequency. By the use of the formulae for terminal sedimentation velocity, conversion of the measured histogram into the distribution of particle diameter is attempted. One difficulty, namely, an interference effect among the particles, is found. Decrease of the particle number within a unit volume can suppress this interference effect, however, it is attended by a long measuring time for the ordinary differential heterodyne method. A new Doppler method is thus adopted in which two incident beams cross each other from opposite directions. The feasibility of the present method is verified by comparing the particle-diameter distribution obtained experi-mentally with those from microscope inspection.View full abstractDownload PDF (3565K) -
Moriyasu KAWAMURA1977 Volume 46 Issue 9 Pages 887-888
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Masayoshi UMENO1977 Volume 46 Issue 9 Pages 889-890
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Shuzo SAITO, Shin'ichiro HASHIMOTO1977 Volume 46 Issue 9 Pages 891-903
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Ikuo KUSHIRO1977 Volume 46 Issue 9 Pages 904-912
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Akira NAKAMURA1977 Volume 46 Issue 9 Pages 913-917
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Takaya YAMAMOTO, Yasuharu SUEMATSU1977 Volume 46 Issue 9 Pages 918-923
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Takashi JIMBO, Masayoshi UMENO, Yoshifumi AMEMIYA1977 Volume 46 Issue 9 Pages 924-928
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Kei MURASE, Shungo SUGAWARA, Masami KAKUCHI, Ken SUKEGAWA, Saburo IMAM ...1977 Volume 46 Issue 9 Pages 929-933
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Yoshiji HORIKOSHI1977 Volume 46 Issue 9 Pages 934-937
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Keigo HOSHIKAWA, Kazumi WADA1977 Volume 46 Issue 9 Pages 938-942
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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Kazuhito YASUDA, Junji SHIRAFUJI, Yoshio INUISHI1977 Volume 46 Issue 9 Pages 943-947
Published: September 10, 1977
Released on J-STAGE: February 09, 2009
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