title: Method for the calibration of the spectral irradiance of tungsten filament transfer standard sources traceable to synchrotron radiation.
abstract: The spectral irradiance calibration of tungsten strip and spiral filament lamps applying synchrotron radiation revealed that the spectral irradiance in the wavelength range from 280 to 400 nm can be well approximated by blackbody radiation according to Planck's law. Consequently, the spectral irradiance of the filament lamp can then be described by an effective irradiance temperature, which would be beneficial for practical measurements. Including the emissivity of tungsten into the approximation, the model can be expanded to visible and near-infrared wavelength regions. The effective irradiance temperature dependence of the lamp current was investigated and appeared to be close to linear.
authors.affiliation: All-Russian Research Institute for Optical and Physical Measurements (VNIIOFI), 119361 Ozernaya St. 46, Moscow, Russia.
authors.forename: Sergey
authors.initials: S
authors.lastname: Anevsky
authors.forename: Vladimir
authors.initials: V
authors.lastname: Krutikov
authors.forename: Olga
authors.initials: O
authors.lastname: Minaeva
authors.forename: Roman
authors.initials: R
authors.lastname: Minaev
authors.forename: Dmitriy
authors.initials: D
authors.lastname: Senin
authors.forename: Jörg
authors.initials: J
authors.lastname: Hollandt
authors.forename: Dieter R
authors.initials: DR
authors.lastname: Taubert