Journal of the Spectroscopical Society of Japan
Online ISSN : 1884-6785
Print ISSN : 0038-7002
ISSN-L : 0038-7002
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Volume 17, Issue 4
Displaying 1-4 of 4 articles from this issue
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  • Short-term Phenomena at the Electrodes in Spark Discharges
    John P. WALTERS
    1968 Volume 17 Issue 4 Pages 133-142
    Published: December 31, 1968
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.17.133
    JOURNAL FREE ACCESS
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  • Matrix and Atmosphere Effects in the Spectrochemical Analysis of Cu-alloys
    Takanobu HAMAGUCHI, Toshiaki MIZUNO, Fumihiro URATANI
    1968 Volume 17 Issue 4 Pages 143-150
    Published: December 31, 1968
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.17.143
    JOURNAL FREE ACCESS
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    It is difficult to analyze silzin bronze and lead bronze by means of the emission spectrochemical analysis under the ordinary conditions, i.e.LVA in air, because of the presence of a remarkable matrix effect.
    In order to find the suitable conditions for the analysis of these alloys, effects of the atmosphere of N2, Ar and air were examined by varing the electrical parameters in the source circuit.
    Good results were obtained with the circuit HVS-Oμ H and HVS-72Oμ in N2 atmosphere for silzin and leaded bronzes respectively.
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  • Analysis of Tracking Error in Infrared Recording Spectrophotometry
    Shigeo MINAMI, Shigeru TSUTSUI
    1968 Volume 17 Issue 4 Pages 151-162
    Published: December 31, 1968
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.17.151
    JOURNAL FREE ACCESS
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    The tracking error caused by the dynamic characteristics of recording spectrophotometers is discussed and analyzed.Under the limited signal-to-noise ratio and available measuring time, the distortion of bands in the recorded spectrum due to the insufficiency of the response of the recording system introduces an appreciable error.The analysis is carried out by computing the distortions for Gaussian and Lorentzian bands by means of an analog simulator after having derived the transfer functions of the recording spectrophotometers.Prior to demonstrating the process of this procedure, the detailed steps in simplifying the block diagrams of the systems are illustrated.The analysis of the tracking errors is carefully done taking into consideration that the signal-to-noise ratio is dominated by the detector noise.The computed values of the tracking errors are in good agreement with the experimental ones obtained with commercial instruments. This procedure of the analysis might be helpful not only to the determination of the parameters in instrument designing but to find the optimum condition of the measuring programs in the recording spectrophotometry.
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  • Multi-channel Atomic Absorption-Flame Spectrophotometer, Model MAF
    I. On Performances of Main Channel
    Kenji KAWASAKI, Fumio KAWASHIMA, Koji KIDA, Takashi KURITA, Hideki MAK ...
    1968 Volume 17 Issue 4 Pages 163-174
    Published: December 31, 1968
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.17.163
    JOURNAL FREE ACCESS
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