Abstract

A wall-stabilized hydrogen arc can be utilized as a standard source of spectral radiance since the continuum emission coefficient is calculable to within a few percent. Previous efforts to apply this concept have been impeded by relatively large uncertainties associated with the plasma diagnostics. The present approach yields absolute intensities independent of other radiometric standards or the accuracy of any plasma diagnostics. The hydrogen arc is operated at high temperatures where the continuum emission coefficient reaches a broad, unique, and calculable maximum. Comparisons with other primary standards are consistent with the estimated uncertainty in the arc continuum intensities.

© 1975 Optical Society of America

Vacuum ultraviolet radiometry. 3: The argon mini-arc as a new secondary standard of spectral radiance

J. M. Bridges and W. R. Ott
Appl. Opt. 16(2) 367-376 (1977)

VUV radiometry below 100 nm: the high-power hydrogen arc as a standard source of continuum radiation between 53 nm and 92 nm

K. Behringer and P. Thoma
Appl. Opt. 18(15) 2586-2594 (1979)

VUV Radiometry with Hydrogen Arcs. 1: Principle of the Method and Comparisons with Blackbody Calibrations from 1650 Å to 3600 Å

W. R. Ott, P. Fieffe-Prevost, and W. L. Wiese
Appl. Opt. 12(7) 1618-1629 (1973)

Vacuum ultraviolet radiation scales: an accurate comparison between plasma blackbody lines and synchrotron radiation

P. J. Key and R. C. Preston
Appl. Opt. 16(9) 2477-2485 (1977)

Spectral irradiance standard for the ultraviolet: the deuterium lamp

R. D. Saunders, W. R. Ott, and J. M. Bridges
Appl. Opt. 17(4) 593-600 (1978)