Abstract

Relative intensities of a number of lines from the fourth, fifth, and sixth spectra of aluminum in the region from 125 to 315 Å, measured earlier with Eastman SWR plates, have been remeasured with both a Bendix multiplier and a sodium salicylate-coated 1P21 multiplier. All three detectors give nearly equivalent results down to about 250 Å but at shorter wavelengths the response of the SWR emulsion falls off more than twice as much as either of the multipliers. When appropriate precautions are taken to reduce the background radiation, either multiplier can be used in this region although the sodium salicylate appears to be more consistent.

© 1967 Optical Society of America

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References

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    [Crossref]
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    [Crossref]
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    [Crossref]
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    [Crossref]
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    [Crossref]
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    [Crossref]

1966 (1)

1963 (2)

M. Seya and F. Masuda, Science of Light 12, 9 (1963).

R. A. Knapp; Appl. Optics 2, 1334 (1963).
[Crossref]

1961 (1)

1956 (1)

1954 (1)

1953 (2)

1933 (1)

P. G. Kruger, Rev. Sci. Instr. 4, 128 (1933).
[Crossref]

Cairns, R. B.

Inn, C. Y.

Jones, H. W.

Kebler, R. W.

Knapp, R. A.

R. A. Knapp; Appl. Optics 2, 1334 (1963).
[Crossref]

Kruger, P. G.

P. G. Kruger, Rev. Sci. Instr. 4, 128 (1933).
[Crossref]

Masuda, F.

M. Seya and F. Masuda, Science of Light 12, 9 (1963).

McCormick, W. W.

Samson, J. A. R.

Sawyer, R. A.

Seya, M.

M. Seya and F. Masuda, Science of Light 12, 9 (1963).

Thurnau, D. H.

Wahr, J. C.

Watanabe, K.

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Figures (2)

Fig. 1
Fig. 1

The Bendix open-window, resistance-strip magnetic photomultiplier. The indicated voltages were the largest that could be used without saturation on the strongest lines.

Fig. 2
Fig. 2

Drawing of a portion of the interior of the spectrograph showing the movable multiplier carriage. The steel band which moves it along the Rowland-circle guide bar and the driving and idler pulleys for the band appear in the lower foreground. The four copper bus bars that supply power to the multiplier and bring out the signal can be seen beyond the guide bar.

Tables (6)

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Table I Spectral lines of aluminum measured with all three detectors.

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Table II , Comparison of intensity ratios for small wavelength differences (5Å) at a peak current of 30 kA.

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Table III Comparison of intensity ratios for medium wavelength differences (30 Å) at a peak current of 30 kA.

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Table IV Comparison of intensity ratios for larger wavelength differences (60 Å.) at a peak current of 30 kA.

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Table V Comparison of intensity ratios for very large wavelength differences at a peak current of 30 kA.

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Table VI Comparison of line ratios for extreme wavelength differences at a peak current of 30 kA.