Journal of the Mass Spectrometry Society of Japan
Online ISSN : 1880-4225
Print ISSN : 1340-8097
ISSN-L : 1340-8097
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Volume 22, Issue 3
Displaying 1-10 of 10 articles from this issue
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  • ORIGINAL PAPERS
    Crossed Beam Studies of Low Energy Ar+ Ions by Ar Atoms
    TATSUO ARIKAWA
    1974 Volume 22 Issue 3 Pages 173-182
    Published: November 25, 1974
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.5702/massspec1953.22.173
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    Measurements of differential cross sections in the vicinity of the rainbow scattering angle for the system of argon ions on argon atoms were carried out using a crossed beam apparatus at energies from 10 to 50eV. Oscillatory structures resulting from the interference between gerade and ungerade states of a pseudo-molecular ion Ar2+ were observed in the differential cross section superimposed on the rainbow patterns due to the elastic scattering. Experimental results were compared with classical calculations, and the depth of the intermolecular potential was estimated from the angular position of the rainbow peak to be—1.3eV assuming the 12-6-4 potential. Results were consistent with the JWKB calculations of Lorents, Olson and Conklin with the use of potential parameters obtained from ab initio calculations of Gilbert and Wahl.
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  • Ionization Caused by β-emitters and Its Applications
    MAKIKO SUEHIRO, MICHI ARATANI, NOBUFUSA SAITO
    1974 Volume 22 Issue 3 Pages 183-189
    Published: November 25, 1974
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.5702/massspec1953.22.183
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    Ionization caused by β-decay of hydrogen-3(tritium)and strontium-90 has been studied by means of a pulse-counting mode of mass spectrometer; Radiation sources are a titanium plate 10mm×15mm carrying, 150 mCi tritium in the form of titanium hyand a silver plate of 12.5mm square with 5 mCi strontium-90 protected by an extremely thin layer of gold. Target materials are H2 and He gases with the natural abundance ratios. Dependence of the ion peak height on the gas pressure has been examined in the of10-4-10-7 Torr, and come to two types of expressions, linear and of cube root. Mechanism of ion formation in this system is discussed, and its tempting applications are presented.
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  • An Automatic Correction Circuit for Respiratory Mass Spectrometers
    ISAO NISHI, SHIGERU SUGAI, KAZUMOTO KIMURA, MASAHIRO KUSAKABE
    1974 Volume 22 Issue 3 Pages 191-198
    Published: November 25, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5702/massspec1953.22.191
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    An automatic correction circuit has been developed for improving the precision of mass spectrometric continuous analysis of the respiratory gases. The principle of correction is based on the fact that most of the variation factors occurring in the direct inlet system are canceled away together with many of variations occurring in the ion source and electronic measuring system by rationing the raw outputs of the mass peaks. The correction circuit has four functions, i. e. compensation of the overlapping peaks, equalization of the overall sensitivities of the relevant components, rationing the each peak to the sum of the relevant peaks and settlement of the total pressure. Through these processings, the output is expressed in pressure. The method is inapplicable to a continuous analysis of the condensable gases because of their slower response of transmission.The precision of the analysis proved to be maintained within 1%for natural dry gases unless the sample flow in the inlet process is extremely disturbed.
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  • Characteristics of the Deposited Oxide Films for the Continuous Dynode Electron Multiplier
    AKIO KOYAMA
    1974 Volume 22 Issue 3 Pages 199-202
    Published: November 25, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5702/massspec1953.22.199
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    The mixture of TiO2with Al2O3or MgO can readily be deposited. And the values of the deposited films'electric resistances can readily be set to the necessary resistance value for the dynode of the continuous type electron multiplier with heat treatment in atmosphere. The films are stable, especially the deposited one of the mixture with Al2O3, and the change of the resistance with time in atmosphere is negligible.The muximum secondary electron emission ratio is from 2.7 to 2.8 and the corresponding accelerating voltage of the primary electrons is from 300to 330V. The films can be used as the dynode of the continuous type electron multiplier.
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  • An Improved Electron Impact Ion Source Power Supply
    EDWARD M. BEAVER
    1974 Volume 22 Issue 3 Pages 203-207
    Published: November 25, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5702/massspec1953.22.203
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    An electron impact ion source power supply has been developed that offers improved ion beam stability. The electrical adjustments of ion source parameters are more flexible, and safety features are incorporated to protect the electron emitting filament from accidental destruction.
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  • Mass Spectrometry of Organometallics.III.The Detection of Less Volatile Components of[Triethyl Aluminum-Water]System and a Proposal to the Elucidation of Their Skeletal Structures
    TORU UENO, TOSHIMITSU SUZUKI, KENJI ASHIDA, EIJI TANAKA, YOSHINOBU TAK ...
    1974 Volume 22 Issue 3 Pages 209-215
    Published: November 25, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5702/massspec1953.22.209
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    Triethyl aluminum and the titled system were studied by mass spectrometry with photographic processings. A number of oxygen-containing ions were detected from the[triethyl aluminum-water]system. A new method is proposed for elucidating the skeletal structures from ion intensity variation according to the number of odd-electron groups which are sticking to the skeleton. The method is based on:(a)invariability of valence of aluminum atoms during fragmentations, (b)relatively high stability of oxygen-bridge bondings, (c)the odd and even electron rule, and(d)high intensity of the ions which come from the parent ion with removal of one radical moiety. Cyclic structures can be assigned to the skeletons of Al2O2, Al3O3and Al4O4, which agree with those suggested in literatures.
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  • Mass Spectra of p-Quinol Derivatives
    YASUJI YAMADA, KUNIO HOSAKA, YASUO SHIDA, KAZUO IGUCHI, MICHIO SUZUKI
    1974 Volume 22 Issue 3 Pages 217-224
    Published: November 25, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5702/massspec1953.22.217
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    Mass spectra of p-quinol derivatives were measured. The fragmentation patterns were discussed on the basis of the high resolution data, metastable ions and deuterium labeling of the hydroxyl group of p-quinols.
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  • On the Approximation of the Classical Deflection Function
    TATSUO ARIKAWA, GIITI IWATA
    1974 Volume 22 Issue 3 Pages 225-227
    Published: November 25, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5702/massspec1953.22.225
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  • Ion Microprobe Analyzer with Wien Filter for Primary Ion Mass Separation
    TOSHIO KONDO, HIFUMI TAMURA, HIROSHI HIROSE
    1974 Volume 22 Issue 3 Pages 229-230
    Published: November 25, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5702/massspec1953.22.229
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  • Assignment of Chloroaquoindium Phthalocyanine by Mass Spectroscopy
    KENJI YOSHIHARA, TAKANOBU SHIOKAWA, MOKUYOSHI KISHIMOTO, SHIN SUZUKI
    1974 Volume 22 Issue 3 Pages 231-232
    Published: November 25, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5702/massspec1953.22.231
    JOURNAL FREE ACCESS
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