Journal of the Spectroscopical Society of Japan
Online ISSN : 1884-6785
Print ISSN : 0038-7002
ISSN-L : 0038-7002
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Volume 21, Issue 2
Displaying 1-6 of 6 articles from this issue
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  • Frequency Tunable Lasers
    Takashi KUSHIDA
    1972 Volume 21 Issue 2 Pages 67-81
    Published: April 30, 1972
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.21.67
    JOURNAL FREE ACCESS
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  • Present Status and the Future of Emission Spectrochemical Analysis
    1972 Volume 21 Issue 2 Pages 82-92
    Published: April 30, 1972
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.21.82
    JOURNAL FREE ACCESS
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  • Studies on the Spectrochemical Analysis of Metal Samples by means of Laser Microprobe Part 2
    Erosion and Analytical Method of Tin-Lead Alloys
    Ryohei ISHIDA, Masaaki KUBOTA
    1972 Volume 21 Issue 2 Pages 93-101
    Published: April 30, 1972
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.21.93
    JOURNAL FREE ACCESS
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    This paper describes experimental results on the erosion produced by a normal laser radiation and a few examples of spectrochemical analysis of tin-lead alloy samples by using a laser microprobe.
    The eroded amount of tin-lead binary alloy, which was calculated from the crater sizes, was dependent upon the heat required to melt the sample.This led to the considerable differences of the eroded amount among various samples with different chemical compositions. Nevertheless it was not observed that these differences influenced directly on the spectrallines intensity.In fact, the analytical curves over the concentration range 10 to 100 percent were obtained and enabled to determine the major constituents of alloy.The application to quantitative analysis of white metals proved that the method was available for convenient microanalysis of alloys.
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  • A Far-Infrared Grating Spectrometer Using a Tunable InSb Detector
    Yoshiaki TSUNAWAKI, Kiyotsugu ISHIKAWA, Takaharu GAMO, Hiroshi YOSHINA ...
    1972 Volume 21 Issue 2 Pages 102-109
    Published: April 30, 1972
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.21.102
    JOURNAL FREE ACCESS
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    An n-type InSb detector in intense magnetic fields has very sharp spectral responsivity due to the cyclotron resonance absorption, so that the wavelength giving a maximum response is tunable with the applied magnetic field.A far-infrared grating spectrometer of Czerny-Turner type, of which f-number is 3, using this tunable InSb detector has been designed and constructed in the frequency range from 33 to 333 cm-1.This spectrometer is very simple, for it has only two scatter plates and a cooled transmission filter to eliminate radiation of which energy is higher than the band gap energy of InSb.The spectral resolutions of this spectrometer are 0.3 cm-1 at 40 cm-1 and 0.4 cm-1 at 90 cm-1, respectively, which were measured under the constant magnetic field and with sufficiently higher S/N ratio and faster wavelength scanning time than those of conventional far-infrared grating spectrometers.Furthermore, the absorption spectra of water vapor are obtained by taking a tune between the maximum photoresponse of the InSb detector and the scanning of grating.
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  • ATR Spectrometer
    Noriyuki INOUE, Tsunetake FUJIYAMA, Takehiko SHIMANOUCHI
    1972 Volume 21 Issue 2 Pages 110-117
    Published: April 30, 1972
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.21.110
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    We have constructed the ATR (Attenuated Total Reflection) apparatus, goniometer, to determine accurately the two bulk optical constants, refractive index and absorption index, of substances in condensed phases in the infrared region.Rotation of the source optics is controlled by a 100 mm diameter worm wheel and a micrometer drive graduated to read to 1'of arc.The average angle of incidence can be varied from 15° to 90° and be determined better than +6'. We used a Perkin-Elmer model 13 single-beam spectrometer equipped with LiF, NaCI, KBr and CsBr prisms in various spectral regions.A chopper was placed between sample and source so that the effect of emission from sample could be eliminated. We calculate the optical constants from the observed reflectivities at two angles of incidence by a“brute force”method of solution programmed in FORTRAN IV.The two angles are chosen so that they give widely separated reflectivities which are quite sensitive, but not too sensitive, to small changes in the angle.Construction, alignment and performance are described.Data are presented for the liquid chloroform ν5and the dichloromethae ν8.
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  • Applied Spectroscopy
    (2) Atomic Absorption Spectrometry
    Yu YOKOYAMA
    1972 Volume 21 Issue 2 Pages 118-135
    Published: April 30, 1972
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.21.118
    JOURNAL FREE ACCESS
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