Oyo Buturi
Online ISSN : 2188-2290
Print ISSN : 0369-8009
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Volume 49, Issue 3
Displaying 1-14 of 14 articles from this issue
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  • [title in Japanese]
    Jumpei TSUJIUCHI
    1980 Volume 49 Issue 3 Pages 211
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.211
    JOURNAL FREE ACCESS
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  • Electrical Conduction in Polymers
    Katsumi YOSHINO, Yoshio INUISHI
    1980 Volume 49 Issue 3 Pages 212-227
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.212
    JOURNAL FREE ACCESS
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    Recent development of research on electrical conduction in polymers is reviewed. It is explained by using the data on electrical conduction in (SN)x and (CH)x that intra-molecular conduction is easier compared with inter-molecular conduction in polymers. The difference of electrical conduction in crystalline and amorphous parts in polymer is pointed out. Dependences of mobility on molecular structure, crystallinity and measurement methods are also discussed.
    Pre-breakdown current, photoconduction and halogen doping in polmers are briefly mentioned.
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  • The Brightness of Single-Crystal LaB6 Cathodes
    Takumi SHINIKE, Hideo HIRAOKA, Ryuichi SHIMIZU
    1980 Volume 49 Issue 3 Pages 228-238
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.228
    JOURNAL FREE ACCESS
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    The brightness of single-crystal LaB6 cathodes of <100>, <110> and <111> orientations were each measured for cathode temperatures from 1500 to 1950K at 20 kV.
    As a preliminary examination of the present technique, the brightness of W-hairpin cathode was measured from 2300 to 2800K. This result has agreed very well with the theoretical brightness for φ=4.4 eV and A=120 A/cm2deg2.
    The maximum brightness of each of the <100>, <110> and <111> LaB6 cathodes were almost the same and were twice as high as those for the cross-over point of the single spot which is obtained by applying a higher bias voltage (negative to cathode). These maximum brightness are described quite well by the theoretical brightness for φ=2.6 eV and A=60 A/cm2deg2 within the limited region of cathode temperatures restricted by space charge effect and oxidation on the cathode surface.
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  • Water Current Meter of Thermal Conductivity Type
    Kamekichi SHIBA, Tadashi ICHINOSE, Takahisa YAMAGUCHI
    1980 Volume 49 Issue 3 Pages 239-246
    Published: March 10, 1980
    Released on J-STAGE: February 20, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.239
    JOURNAL FREE ACCESS
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    The water current meter of thermal conductivity type reported here utilizes a thermopile for velocity measurement.
    The detector is composed of a thermopile of 20 (cc) couples, attached on a thin long rec-tangular mica plate, and a fine heating wire of constantan wound on the plate near its one end.
    The termopile measures the difference of temperatures between the heated part of the mica plate and the unheated part.
    That is, the velocity of water is measured by the temperature difference.
    The results of experiments by constant heat method and constant temperature difference method show that the velocity of water 0_??_1 m/s can be measured with an accuracy of ±2%.
    The graphic charts of the temperature difference and heatingcurrent obtained by both methods are approximately hyperbolic curves for the velocity of water.
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  • The Contrast Reversal of Summation Moiré Fringes
    Kazuki SASADA, Kazuo P. MIYAKE
    1980 Volume 49 Issue 3 Pages 247-249
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.247
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    There are two kinds of moire fringes; summation and multiplication types. The formation if the summation moire is interpretated in terms of the nonlinear characteristics of recording materials when the observation system cannot resolve the details of constituent grid-structures. When different parts of the characteristic curve of photographic emulsion are used a reversal phenomenon in contrast is observed, to which a theoretical explanation is given.
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  • Production of Fine Particles of Silver by Vacuum Evaporation on Running Oil Substrate
    Yoshiharu MATSUOKA, Hiroshi MORINAGA
    1980 Volume 49 Issue 3 Pages 250-254
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.250
    JOURNAL FREE ACCESS
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    Ultrafine particles of silver were prepared by vacuum evaporation on running oil substrate. Octoil-S (ester), HIVAC F-4 (silicone) and other oils were used as substrates. It was found that the particles prepared in HIVAC F-4 have a strong tendency to coagulate together compared to those prepared in Octoil-S. When the particles in Octoil-S were separated from the oil by distillation in vacuum, they formed a thin film even at a temperature as low as 80°C.
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  • [title in Japanese]
    Hideki TSUYA
    1980 Volume 49 Issue 3 Pages 255
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.255
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1980 Volume 49 Issue 3 Pages 256-257
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.256
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1980 Volume 49 Issue 3 Pages 258
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.258
    JOURNAL FREE ACCESS
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  • New International Temperature Scale below 30K
    Hirohisa SAKURAI
    1980 Volume 49 Issue 3 Pages 259-265
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.259
    JOURNAL FREE ACCESS
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    The definition, background and derivation are given for a provisional temperature scale, Ehelle provisoire de Température de 1976 entre 0. 5 K et 30 K, which is intended to all eviateinconsistencies which exist between liquid helium vapour pressure scales and the IPTS-68 and to set an internationaltemperature scale below 13. 81 K. The interpolation instruments for realizing this scale are briefly discussed with the reference points.
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  • Channeled-Ion Implantation into Silicon
    Tsuneo FURUYA, Teruo SAKURAI
    1980 Volume 49 Issue 3 Pages 266-274
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.266
    JOURNAL FREE ACCESS
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    The channeled-ion implantation into silicon is an attractive doping technique which is more advantageous than the random implantation in the characteristics such as deeper doping profile, less radiation damage and thinner selective implantation mask.
    This paper reviews the theory of channeling, carrier depth distribution of implanted ions, implantation machine and the applications to silicon devices. The effects on the carrier profile of implanted ions is discussed in terms of various parameters such as the crystal orientation, the ion energy, the ion species, the ion dose, the target temperature, the surface preparation of target.
    General shape of carrier depth distribution of channeled dopant ions can be determined theoretically but detailed profile must still be determined experimentally. In the advance of the machine technology, the parallel-scanning system of ion beam can provide high doping uniformity and reproducibility comparable to that of random implantation.
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  • Vibration Measurement Using Optical Fiber Probe
    Sdayuki UEHA, Nori SHIBATA, Jumpei TSUJIUCHI
    1980 Volume 49 Issue 3 Pages 275-278
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.275
    JOURNAL FREE ACCESS
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  • Hybrid Hlolgraphic Interferometry for 3-D Deformation Measurement
    Toshio HONDA, Suezou NAKADATE, Nobutaka MAGOME, Jumpei TSUJIUCHI
    1980 Volume 49 Issue 3 Pages 279-283
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.279
    JOURNAL FREE ACCESS
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  • Autoacceleration of REB with Coaxial Resonator
    Mitsuhiro GOTO, Takayoshi YAMAMOTO, Seishi TAKEDA, Masaharu KAWANISHI
    1980 Volume 49 Issue 3 Pages 284-286
    Published: March 10, 1980
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.49.284
    JOURNAL FREE ACCESS
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