On the Photographic Ion Quantity Measurment in the Spark Source Mass Spectrometry

FUMIYA KONISHI; KENJI KUSAO; NOBUO NAKAMURA

doi:10.5702/massspec1953.14.275

FUMIYA KONISHI, KENJI KUSAO, NOBUO NAKAMURA

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1966 Volume 14 Issue 5 Pages 275-284

DOI https://doi.org/10.5702/massspec1953.14.275

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Published: December 25, 1966 Received: September 22, 1966 Available on J-STAGE: June 28, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: June 28, 2010 Reason for correction: - Correction: DTRECEIVED Details: Right : 19660922

Date of correction: June 28, 2010 Reason for correction: - Correction: ABSTRACT Details: Wrong : The correct emulsion characteristic curve was constructed by plotting isotopic abundance against Seidel function obtained from the isotopic lines of Sn⁺;spectra taken on a single plate at three different exposures, (Fig. 1). The monitor current during the exposure was always kept below 1×10^-13A which had been found necessary in our laboratory to avoid the broading of spectral lines, a condition essential to construct a correct characteristic curve. It is to be noted in this connection that a certain microphotometer gave a false result that the line width at half intensity decreased with density though in fact it remained constant. Employing the characteristic curve thus obtained, constancy of ion quantity and exactness isotopic abundance measurement were examined by the use of a number of zinc or carbon spectra taken all over a single Ilford Q 2 plate both by changing magnetic filed strength and by vertically displacing the plate, (Fig. 1). All these spectra were taken at constant exposure by keeping the monitor current below 1×10^-13A. Results. The ion quantities^*obtained of zinc and carbon isotopes were found constant within±5 percent. The isotopic abundance of zinc was exact within±2 percent absolute. ^*Here ion quantity means a quantity proportional to the number of ions that have arrived at the line position.
Right : The correct emulsion characteristic curve was constructed by plotting isotopic abundance against Seidel function obtained from the isotopic lines of Sn⁺;spectra taken on a single plate at three different exposures, (Fig. 1). The monitor current during the exposure was always kept below 1×10^-13A which had been found necessary in our laboratory to avoid the broading of spectral lines, a condition essential to construct a correct characteristic curve. It is to be noted in this connection that a certain microphotometer gave a false result that the line width at half intensity decreased with density though in fact it remained constant.
Employing the characteristic curve thus obtained, constancy of ion quantity and exactness isotopic abundance measurement were examined by the use of a number of zinc or carbon spectra taken all over a single Ilford Q 2 plate both by changing magnetic filed strength and by vertically displacing the plate, (Fig. 1). All these spectra were taken at constant exposure by keeping the monitor current below 1×10^-13A.
Results. The ion quantities* obtained of zinc and carbon isotopes were found constant within ±5 percent. The isotopic abundance of zinc was exact within ±2 percent absolute. *Here ion quantity means a quantity proportional to the number of ions that have arrived at the line position.

Date of correction: June 28, 2010 Reason for correction: - Correction: CITATION Details: Wrong : E
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Right : C. W. Hull, Photographic quantitative analysis with a solids spark mass spectrograph, ASTM Mass Spectrometry Conference, 1962.
E. B. Owens and N. A. Giardino, Anal. Chem. 35, 1172(1963).
H. Lichtblau, J. Mattauch, Z. Phys. 117, 502(1941).
J. Mattauch and H. Ewald, Naturwissenshaften, 41, 487(1943).
J. F. Duke,“Ultrapurification of Semiconductor Materials”,M. S. Brooks, J. K. Kennedy eds., P. 294, Macmillan, New York, 1962.
J. R. Charchill, Ind. Eng. Chem., Anal. Ed., 16, 653(1944).
E. Dornnenburg and H. Hintenberger, Z. Naturforsch., 16a, 676(1961).
W. Seidel, reported in H. Kaiser, Spectrochimica Acta, 2, 1(1941).
A. Cornu, Analytical applications of line width studies in spark source mass spectrometry, ASTM Mass Spectrometry Conference, 1965,
H. Kawano, Bull. of the Chem. Soc. of Japan, 37, 697(1964).
J. Franzen and H. Hintenberger, Z. Nat urforsch., 18a, 397(1963).
J. R. White and A. E. Cameron, Phys. Rev., 74, 991(1948).
M. G. Inghram, D. C. Hess, Jr., H. S. Brown and E. Goldberg, Phys. Rev. 74, 343(1948).
S. Antkiw and V. H. Dibeler, J. Chem. Phys. 21, 1890(1953).

Date of correction: June 28, 2010 Reason for correction: - Correction: PDF FILE Details: -

Abstract

The correct emulsion characteristic curve was constructed by plotting isotopic abundance against Seidel function obtained from the isotopic lines of Sn⁺;spectra taken on a single plate at three different exposures, (Fig. 1). The monitor current during the exposure was always kept below 1×10^-13A which had been found necessary in our laboratory to avoid the broading of spectral lines, a condition essential to construct a correct characteristic curve. It is to be noted in this connection that a certain microphotometer gave a false result that the line width at half intensity decreased with density though in fact it remained constant.
Employing the characteristic curve thus obtained, constancy of ion quantity and exactness isotopic abundance measurement were examined by the use of a number of zinc or carbon spectra taken all over a single Ilford Q 2 plate both by changing magnetic filed strength and by vertically displacing the plate, (Fig. 1). All these spectra were taken at constant exposure by keeping the monitor current below 1×10^-13A.
Results. The ion quantities* obtained of zinc and carbon isotopes were found constant within ±5 percent. The isotopic abundance of zinc was exact within ±2 percent absolute. *Here ion quantity means a quantity proportional to the number of ions that have arrived at the line position.

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