Abstract

Pulsed photoexcitation of hydrocarbon fuels doped with organic molecules exhibits a temperature-dependent fluorescence spectrum that is used as the basis for a weakly intrusive optical thermometer. By use of pulsed excitation from a 308-nm 8-ns XeCl excimer laser with gated detection of the fluorescence emissions from doped n -heptane, we demonstrate that time-resolved measurement of the excited monomer and the redshifted excited-state complex (exciplex) fluorescence emissions can yield sub-1° accuracy for temperatures ranging from 440 K to the vicinity of the critical temperature (540 K). The experiments also show that the exciplex fluorescence spectrum is pressure independent below and above supercritical pressure.

© 1998 Optical Society of America

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  1. C. K. Law, Prog. Energy Combust. Sci. 8, 171 (1982).
  2. G. M. Faeth, Prog. Energy Combust. Sci. 9, 1 (1983).
  3. W. A. Sirignano, Prog. Energy Combust. Sci. 9, 291 (1983).
  4. A. M. Murray and L. A. Melton, Appl. Opt. 24, 2783 (1985).
  5. H. E. Gossage and L. A. Melton, Appl. Opt. 26, 2256 (1987).
  6. J. H. Stufflebeam, Appl. Spectrosc. 43, 274 (1989).
  7. S. H. Hale and L. A. Melton, Appl. Spectrosc. 44, 101 (1990).
  8. M. R. Wells and L. A. Melton, J. Heat Transfer 112, 1008 (1990).
  9. T. R. Hanlon and L. A. Melton, J. Heat Transfer 114, 450 (1992).

1992

T. R. Hanlon and L. A. Melton, J. Heat Transfer 114, 450 (1992).

1990

S. H. Hale and L. A. Melton, Appl. Spectrosc. 44, 101 (1990).

M. R. Wells and L. A. Melton, J. Heat Transfer 112, 1008 (1990).

1989

1987

1985

1983

G. M. Faeth, Prog. Energy Combust. Sci. 9, 1 (1983).

W. A. Sirignano, Prog. Energy Combust. Sci. 9, 291 (1983).

1982

C. K. Law, Prog. Energy Combust. Sci. 8, 171 (1982).

Faeth, G. M.

G. M. Faeth, Prog. Energy Combust. Sci. 9, 1 (1983).

Gossage, H. E.

Hale, S. H.

Hanlon, T. R.

T. R. Hanlon and L. A. Melton, J. Heat Transfer 114, 450 (1992).

Law, C. K.

C. K. Law, Prog. Energy Combust. Sci. 8, 171 (1982).

Melton, L. A.

T. R. Hanlon and L. A. Melton, J. Heat Transfer 114, 450 (1992).

S. H. Hale and L. A. Melton, Appl. Spectrosc. 44, 101 (1990).

M. R. Wells and L. A. Melton, J. Heat Transfer 112, 1008 (1990).

H. E. Gossage and L. A. Melton, Appl. Opt. 26, 2256 (1987).

A. M. Murray and L. A. Melton, Appl. Opt. 24, 2783 (1985).

Murray, A. M.

Sirignano, W. A.

W. A. Sirignano, Prog. Energy Combust. Sci. 9, 291 (1983).

Stufflebeam, J. H.

Wells, M. R.

M. R. Wells and L. A. Melton, J. Heat Transfer 112, 1008 (1990).

Appl. Opt.

Appl. Spectrosc.

J. Heat Transfer

M. R. Wells and L. A. Melton, J. Heat Transfer 112, 1008 (1990).

T. R. Hanlon and L. A. Melton, J. Heat Transfer 114, 450 (1992).

Prog. Energy Combust. Sci.

C. K. Law, Prog. Energy Combust. Sci. 8, 171 (1982).

G. M. Faeth, Prog. Energy Combust. Sci. 9, 1 (1983).

W. A. Sirignano, Prog. Energy Combust. Sci. 9, 291 (1983).

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