Abstract

The addition of metallic iodides to mercury arc lamps has proven to be an effective and practical method of altering the spectral output. If the excitation levels of the metal of the dissociated iodide are lower than the excitation levels of mercury, the mercury arc temperature is considerably reduced. Experimental evidence for this phenomenon is presented.

© 1967 Optical Society of America

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References

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  1. D. A. Larson, H. D. Fraser, W. V. Cushing, M. C. Unglert, Illum. Engr. 58, 434 (1963).
  2. G. H. Reiling, J. Opt. Soc. Am. 54, 532 (1964); Inst. Radio Engrs. Trans. Electron Devices ED-9, 271 (1962).
    [CrossRef]
  3. W. C. Gungle, F. Koury, J. F. Waymouth, J. Opt. Soc. Am. 54, 566 (1964); J. F. Waymouth, W. C. Gungle, J. M. Harris, F. Koury, Illum. Engr. 60, 85 (1965).
  4. E. C. Martt, L. J. Smialek, A. C. Green, Illum. Engr. 59, 34 (1964).
  5. T. J. Rautenberg, P. D. Johnson, Appl. Opt. 3, 487 (1964); P. D. Johnson, T. H. Rautenberg, J. Opt. Soc. Am. 54, 1425 (1964).
    [CrossRef]
  6. L. S. Frost, C. F. Gallo (unpublished studies performed at the Westinghouse Research Laboratory).
  7. D. H. Pollock, J. A. Duardo, Bull. Am. Phys. Soc. 12, 220 (1967).
  8. C. F. Gallo, Appl. Opt. 5, 1285 (1966).
    [CrossRef] [PubMed]
  9. W. Elenbaas, The High Pressure Mercury Vapour Discharge (Interscience Publishers, Inc., New York, 1951), pp. 56–62, 130 and particularly Eq. 4.4.5.
  10. Reference 9, pp. 41–45.
  11. Reference 9, pp. 25–30, 35, 61, 62.

1967

D. H. Pollock, J. A. Duardo, Bull. Am. Phys. Soc. 12, 220 (1967).

1966

1964

G. H. Reiling, J. Opt. Soc. Am. 54, 532 (1964); Inst. Radio Engrs. Trans. Electron Devices ED-9, 271 (1962).
[CrossRef]

W. C. Gungle, F. Koury, J. F. Waymouth, J. Opt. Soc. Am. 54, 566 (1964); J. F. Waymouth, W. C. Gungle, J. M. Harris, F. Koury, Illum. Engr. 60, 85 (1965).

E. C. Martt, L. J. Smialek, A. C. Green, Illum. Engr. 59, 34 (1964).

T. J. Rautenberg, P. D. Johnson, Appl. Opt. 3, 487 (1964); P. D. Johnson, T. H. Rautenberg, J. Opt. Soc. Am. 54, 1425 (1964).
[CrossRef]

1963

D. A. Larson, H. D. Fraser, W. V. Cushing, M. C. Unglert, Illum. Engr. 58, 434 (1963).

Cushing, W. V.

D. A. Larson, H. D. Fraser, W. V. Cushing, M. C. Unglert, Illum. Engr. 58, 434 (1963).

Duardo, J. A.

D. H. Pollock, J. A. Duardo, Bull. Am. Phys. Soc. 12, 220 (1967).

Elenbaas, W.

W. Elenbaas, The High Pressure Mercury Vapour Discharge (Interscience Publishers, Inc., New York, 1951), pp. 56–62, 130 and particularly Eq. 4.4.5.

Fraser, H. D.

D. A. Larson, H. D. Fraser, W. V. Cushing, M. C. Unglert, Illum. Engr. 58, 434 (1963).

Frost, L. S.

L. S. Frost, C. F. Gallo (unpublished studies performed at the Westinghouse Research Laboratory).

Gallo, C. F.

C. F. Gallo, Appl. Opt. 5, 1285 (1966).
[CrossRef] [PubMed]

L. S. Frost, C. F. Gallo (unpublished studies performed at the Westinghouse Research Laboratory).

Green, A. C.

E. C. Martt, L. J. Smialek, A. C. Green, Illum. Engr. 59, 34 (1964).

Gungle, W. C.

W. C. Gungle, F. Koury, J. F. Waymouth, J. Opt. Soc. Am. 54, 566 (1964); J. F. Waymouth, W. C. Gungle, J. M. Harris, F. Koury, Illum. Engr. 60, 85 (1965).

Johnson, P. D.

Koury, F.

W. C. Gungle, F. Koury, J. F. Waymouth, J. Opt. Soc. Am. 54, 566 (1964); J. F. Waymouth, W. C. Gungle, J. M. Harris, F. Koury, Illum. Engr. 60, 85 (1965).

Larson, D. A.

D. A. Larson, H. D. Fraser, W. V. Cushing, M. C. Unglert, Illum. Engr. 58, 434 (1963).

Martt, E. C.

E. C. Martt, L. J. Smialek, A. C. Green, Illum. Engr. 59, 34 (1964).

Pollock, D. H.

D. H. Pollock, J. A. Duardo, Bull. Am. Phys. Soc. 12, 220 (1967).

Rautenberg, T. J.

Reiling, G. H.

Smialek, L. J.

E. C. Martt, L. J. Smialek, A. C. Green, Illum. Engr. 59, 34 (1964).

Unglert, M. C.

D. A. Larson, H. D. Fraser, W. V. Cushing, M. C. Unglert, Illum. Engr. 58, 434 (1963).

Waymouth, J. F.

W. C. Gungle, F. Koury, J. F. Waymouth, J. Opt. Soc. Am. 54, 566 (1964); J. F. Waymouth, W. C. Gungle, J. M. Harris, F. Koury, Illum. Engr. 60, 85 (1965).

Appl. Opt.

Bull. Am. Phys. Soc.

D. H. Pollock, J. A. Duardo, Bull. Am. Phys. Soc. 12, 220 (1967).

Illum. Engr.

E. C. Martt, L. J. Smialek, A. C. Green, Illum. Engr. 59, 34 (1964).

D. A. Larson, H. D. Fraser, W. V. Cushing, M. C. Unglert, Illum. Engr. 58, 434 (1963).

J. Opt. Soc. Am.

G. H. Reiling, J. Opt. Soc. Am. 54, 532 (1964); Inst. Radio Engrs. Trans. Electron Devices ED-9, 271 (1962).
[CrossRef]

W. C. Gungle, F. Koury, J. F. Waymouth, J. Opt. Soc. Am. 54, 566 (1964); J. F. Waymouth, W. C. Gungle, J. M. Harris, F. Koury, Illum. Engr. 60, 85 (1965).

Other

L. S. Frost, C. F. Gallo (unpublished studies performed at the Westinghouse Research Laboratory).

W. Elenbaas, The High Pressure Mercury Vapour Discharge (Interscience Publishers, Inc., New York, 1951), pp. 56–62, 130 and particularly Eq. 4.4.5.

Reference 9, pp. 41–45.

Reference 9, pp. 25–30, 35, 61, 62.

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Figures (1)

Fig. 1
Fig. 1

Estimated arc temperature of a Hg + TlI discharge as a function of the TlI pressure in the discharge. In this curve, the mercury concentration and the power input were maintained constant. No great absolute accuracy is claimed for these temperature estimates. The graph is merely intended to show that the arc temperature decreases significantly as the TlI concentration increases in a Hg + TlI discharge.

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

P R = P Hg = N Hg j i E j i A j i ( g j / g 0 ) exp [ - j / k T ] ,
P R = P Hg + P M + P I ,
P R = N Hg j i E j i A j i ( g j / g 0 ) exp [ - j / k T ] + N M j i E j i A j i ( g j / g 0 ) exp [ - j / k T ] + N I j i E j i A j i ( g j / g 0 ) exp [ - j / k T ] ,
T = 39 , 300 ° K 7.4 - log [ ( W - 10 ) m - 1 ] ,
P T 1 / P Hg exp [ ( Hg - T 1 ) / k T ] exp [ 4.5 eV / k T ] .

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