On the basis of some theoretical considerations concerning the analyzability of elements that have their resonance lines in the vacuum ultraviolet, a hollow-cathode light source of new design has been tested in connection with a vacuum spectrograph. The results, which show an improvement over those reported in the literature, are tabulated. The limit of detectability under the given conditions was at 0.01 μg iodine.
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References
1.
For a general survey on the VUV spectral region, the experimental difficulties, and the way to overcome them, see, for example, MilazzoG., Molecular Spectroscopy, (Butterworth and Co., Publishers Ltd., London, 1952) p. 135 (General and introductory lectures presented at the 5th European Congress on Molecular Spectroscopy, Amsterdam.)
2.
See for example GattererA. and FrodlV., Ric. Spettroscopiche1, No. 7, 201 (1946); and GattererA., Spectrochim. Acta3, 214 (1948), for ultrashort wave excitation;
3.
MacNallyJ. R.HarrisonG. R., and RoweE., J. Opt. Soc. Am.37, 93 (1947);
TaylorW. H. and WebbM. S. W., U.K. At. Energy Authority, Res. Group Rept.R 3875 (1961), for copper spark;
9.
WeberR.Bull. Soc. Chim. France1961, 805 (1961), for high frequency;
10.
AndrychukA. and JonesC. E. in BrooksM. S. and KennedyJ. S., Eds., Ultrapurification of Semiconductor Materials (The McMillan Company, New York, 1962), p. 373, for electron-gun excitation. This bibliography is very far from complete. It is only a choice of some significant papers illustrating the variety of light sources utilized for spectrochemical analyses of the halogens (which have their resonance lines in the VUV region) utilizing other spectral lines in the visible region.
11.
RomandJ., J. Quant. Spectry. & Radiative Transfer2691 (1962), and their preceding bibliography.
12.
This light source has been designed by one of the present authors (G. M.) to obtain the spectra necessary to complete, in cooperation with JunkesJ. and SalpeterE. W.
13.
(Astrophysical Laboratory of the Vatican's Astronomical Observatory), the atlas of the line spectra of the elements in the VUV region (the first part of which was already published by Specola Vaticana, Cittă del Vaticano, 1965). This light source is described in detail in MilazzoG., Appl. Spectry.21, 000 (1967).
14.
PaschenF., Ann. Physik. [IV]50, 901 (1916).
15.
van VoorhisC. C. and ShenstoneA. G., Rev. Sci. Instr.12257 (1941).
16.
Mandel'stamS. L. and NederV. V., Opt. Spectry (USSR) (English Transl)10, 190 (1961) (original Russian Opt. i Spectrosskopiya 10, 190).
17.
MilazzoG., Spectrochim. Acta11, 474 (1957).
18.
ZaidelA. N.Prohof'evV. K., and RaiskiiS. M., Tables of Spectrum Lines, (Pergamon Press, Ltd., London, 1961).
19.
KellyR. L., “Vacuum Ultraviolet Emission Lines,” University of California Lawrence Radiation Laboratory Rept. U.C.R.L. N.5612 (1959).
