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 60, Issue 6
Displaying 1-15 of 15 articles from this issue
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COMMENTARIES
  • Memory of Late Professor H. Matsuda in 1960s
    Sadayoshi FUKUMOTO
    2012 Volume 60 Issue 6 Pages 65-66
    Published: December 01, 2012
    Released on J-STAGE: December 15, 2012
    DOIhttps://doi.org/10.5702/massspec.12-39
    JOURNAL FREE ACCESS
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    Late Professor H. Matsuda was active in the field of ion optics as well as mass spectroscopy. The author worked with Professor Matsuda in 1960s for the construction of an innovative high-resolution mass spectrometer using a r-1 magnet with high dispersion. This short note is dedicated to the memory of Professor Matsuda.
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  • Hisashi Matsuda
    A Pioneer and a Giant in Ion Optics
    Yoshitaka FUJITA
    2012 Volume 60 Issue 6 Pages 67-72
    Published: December 01, 2012
    Released on J-STAGE: December 15, 2012
    DOIhttps://doi.org/10.5702/massspec.12-43
    JOURNAL FREE ACCESS
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    Most researchers, who are currently involved in the field of mass spectroscopy, think that the Mass Spectrometer is a “means” of accomplishing a research objective. In the 1950s when Prof. Matsuda started his research career, however, the mass spectrometer itself was the supreme “object” to be developed and established. He was confident that ion optics was a “means” to design and realize his objectives, and he devoted his early career in the development of the methodology of the 3rd-order ion optical calculations using the Matrix Method. With the establishment of the calculations, however, he found that the mass spectrometer itself turned into a “means.” In the 1970s and 1980s, he used the ion optics he established in the innovative design of mass spectrometers. These accomplishments turned out to be a major contribution to the development of mass spectrometry and to the formation of the society of mass spectroscopy. His method of ion optical calculations continues to be vital in designing beam transportation systems, as well as various types of spectrometers.
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  • The Recollections of Prof. Matsuda
    Kozo MISEKI
    2012 Volume 60 Issue 6 Pages 73-74
    Published: December 01, 2012
    Released on J-STAGE: December 15, 2012
    DOIhttps://doi.org/10.5702/massspec.12-44
    JOURNAL FREE ACCESS
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    The author's recollection about Prof. Matsuda is written.
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  • Prof. Matsuda and His Contribution to Earth and Planetary Science
    Kentaro TERADA
    2012 Volume 60 Issue 6 Pages 75-76
    Published: December 01, 2012
    Released on J-STAGE: December 15, 2012
    DOIhttps://doi.org/10.5702/massspec.12-46
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  • Mass Spectrometer Joint Development by Dr. Hisashi Matsuda & JEOL Ltd.
    MS Business Unit, JEOL Ltd.
    2012 Volume 60 Issue 6 Pages 77-81
    Published: December 01, 2012
    Released on J-STAGE: December 15, 2012
    DOIhttps://doi.org/10.5702/massspec.12-40
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    Since 1965, JEOL Ltd. (hereafter, JEOL) has released more than 40 mass spectrometer models to the market. In most of these systems, ion optical systems that are based on the work of Dr. Hisashi Matsuda, formerly a professor at Osaka University, are employed. A synopsis of Dr. Matsuda’s work with JEOL on the development of mass spectrometry systems is presented in this report. The content of the actual research conducted by Dr. Matsuda has previously been reported in detail in his published works, so it is not repeated here. Please refer to the bibliography for additional information.
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  • Memories of Professor Hisashi Matsuda
    Shunroku TAYA
    2012 Volume 60 Issue 6 Pages 83-85
    Published: December 01, 2012
    Released on J-STAGE: December 15, 2012
    DOIhttps://doi.org/10.5702/massspec.12-42
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REVIEW
  • Multi-Turn Time-of-Flight Mass Spectrometers
    Michisato TOYODA, Shuichi SHIMMA, Jun AOKI, Morio ISHIHARA
    2012 Volume 60 Issue 6 Pages 87-102
    Published: December 01, 2012
    Released on J-STAGE: December 15, 2012
    DOIhttps://doi.org/10.5702/massspec.12-47
    JOURNAL FREE ACCESS
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    The mass resolution of a time-of-flight (TOF) mass spectrometer is directly proportional to its total flight path length. We have developed multi-turn TOF mass spectrometers, where ions are stored in a fixed orbit within an electrostatic sector and allowed to propagate the said orbit numerous times. With each successive orbit the flight path is correspondingly increasing. The first multi-turn TOF mass spectrometer, the MULTUM Linear plus, was developed for cometary exploration. The spectrometer consists of four cylindrical electric sectors and 28 electric quadrupole lenses. The size of the analyzer is 40 cm square. Mass resolution is demonstrated to increase according to the number of ion cycles. A mass resolution of greater than 350,000 was achieved after 501.5 cycles. Another multi-turn TOF mass spectrometer, the MULTUM II, was also developed in an effort to reduce the number of quadrupole lenses, which consists of only four toroidal electric sectors. We are developing various types of mass spectrometers based on the MULTUM II technology, a TOF/TOF mass spectrometer ‘MULTUM-TOF/TOF’, a stigmatic imaging mass spectrometer ‘MULTUM-IMG’ and miniature mass spectrometers of high mass resolving power ‘MULTUM-S’ series.
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Obituary
2012 MSSJ AWARD FOR DISTINGUISHED CONTRIBUTION in MS
2012 MSSJ RESEARCH AWARDS
2012 MSSJ AWARD FOR DISTINGUISHED SERVICE
Letter to the Editor
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