“…The deviation of the spectral radiance values of the latter measurements in comparison to the synchrotron based values is always smaller than 3%. This result was also confirmed by two earlier experiments [12,13]. Unauthenticated Download Date | 5/11/18 11:05 AM…”
The spectral radiance Lof a low current carbon arc (current 7.3 amps, voltage 65 V) has been calibrated in the spectral range from the air cut-off (A^ 185 nm) to 340 nm with an uncertainty of + 3% utilizing the electron synchrotron radiation of DESY, Hamburg. In the wavelength range above 260 nm these values differ by less than + 6% from the measurements of Magdeburg and Schurer.
“…The deviation of the spectral radiance values of the latter measurements in comparison to the synchrotron based values is always smaller than 3%. This result was also confirmed by two earlier experiments [12,13]. Unauthenticated Download Date | 5/11/18 11:05 AM…”
The spectral radiance Lof a low current carbon arc (current 7.3 amps, voltage 65 V) has been calibrated in the spectral range from the air cut-off (A^ 185 nm) to 340 nm with an uncertainty of + 3% utilizing the electron synchrotron radiation of DESY, Hamburg. In the wavelength range above 260 nm these values differ by less than + 6% from the measurements of Magdeburg and Schurer.
“…Nicodemus (85C) edited a self-study manual on optical radiation measurements. Saunders and Shumaker (106C) discussed the NBS scale of spectral irradiance, and Bridges et al (12C,13C) described spectral radiance sources and calibrations in the ultraviolet. Gilham (48C) reviewed radiation standards, and Preston (95C-97C) described a plasma standard of temperature and ultraviolet radiation.…”
Section: Radiation Standards Radiation Standards and Methodsmentioning
“…-the diameter and magnification of the lenses are chosen so that the signal due to the lamps is of the order of the one due to the Sun; -lamps and lenses are mechanically stable with respect to the entrances slits; -the lamp currents are regulated at ]0 .4 tO provide 0.1% stability; -the lamp currents, voltage and temperature are telemetred; -other characteristics are given in Finkenzeller and Labs (1979). Consequently, we measure in space and at ground all possible change of the instrument sensitivity.…”
Section: In-flight Calibration Lampsmentioning
confidence: 99%
“…(ii) 3% for 100 hr burning time with deuterium lamps (Bridges et al, 1977). But any change of their irradiance can be monitored by comparison with the tungsten ribbon lamp is the range 280-350 nm.…”
This instrument, at the present time in development, will fly on board Spacelab I in May 1983.Other flights are foreseen during the following missions. This instrument is composed by three double monochromators covering the range 170 to 3200 nm. The spectrometers have band-passes of 1 nm up to 900 nm and 20 nm from 850 to 3200 nm with an accuracy 10 -2 nm. Calibration lamps are included in the instrument to monitor any change of its sensitivity and wavelength scale.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.