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Quartz tungsten halogen lamp

The set-up consists of a photometer, a tunnel of 1.5 m diameter with an exhaust fan and a stand to mount the flare. First of all, the photometer is calibrated using a standard quartz tungsten halogen lamp of 1000 watts kept at a distance of 1 foot (0.305 m) from the detector. The flare mounted on a stand is positioned in the... [Pg.382]

Figure 4.7 Spectral output of a variety of commercial IR radiation sources, including a silicon carbide source (dashed line marked SiC) and an NIR quartz tungsten-halogen lamp (the dotted line marked QTH). A blackbody curve at 1273 K is included for comparison. [Courtesy of Newport Corporation, Irvine, CA (www.newport.com).]... Figure 4.7 Spectral output of a variety of commercial IR radiation sources, including a silicon carbide source (dashed line marked SiC) and an NIR quartz tungsten-halogen lamp (the dotted line marked QTH). A blackbody curve at 1273 K is included for comparison. [Courtesy of Newport Corporation, Irvine, CA (www.newport.com).]...
Figure 4.8 (a) Commercial quartz tungsten-halogen lamps for use in the NIR region. The lamps... [Pg.229]

The electrochemical device has been described before [9] and will not be reported here. A GBC 918 Spectrophotometer (wavelength range 190-900nm) quipped with two light sources, a 50 W quartz-tungsten-halogen lamp and a 30 W deutoium lamp was used. [Pg.32]

Most instrumentation used to measure the region from 190 to 2500 nm utilizes a combination of the quartz Tungsten-halogen lamp for the visible and near-infrared regions (approximately 350-2500 nm) and the DC deuterium lamp for the ultraviolet region (from 190 to 350 nm). The useful working ranges for the most common sources are ... [Pg.33]

Figures 9.19 and 9.20 present the temperature dependence of the exponent y in oxygen-free and C70 films, respectively [49,58]. Each y-value is obtained by varying the intensity 7q of white light from a quartz-tungsten-halogen lamp between approx. 10 and 10 W cm (at hv = 2 eV, 1 W cm X 10 photons cm s ) using neutral density filters. A log—log plot of j as a function of 7q results in a straight line across the whole range of light intensities... Figures 9.19 and 9.20 present the temperature dependence of the exponent y in oxygen-free and C70 films, respectively [49,58]. Each y-value is obtained by varying the intensity 7q of white light from a quartz-tungsten-halogen lamp between approx. 10 and 10 W cm (at hv = 2 eV, 1 W cm X 10 photons cm s ) using neutral density filters. A log—log plot of j as a function of 7q results in a straight line across the whole range of light intensities...
The tungsten-halogen lamp operates in a very specific mode, dependent on the detailed chemistry of the atmosphere within the lamp enclosure. The lamp envelope is normally a thin quartz bulb, filled with an inert... [Pg.114]

Tungsten-halogen lamp See quartz-iodine lamp. Other halogens may fill the lamp. [Pg.350]

Tungsten-halogen lamp A tungsten lamp that contains a small amount of It within a quartz envelope that allows the lamp to operate at a higher temperature brighter than a conventional tungsten filament lamp. [Pg.1120]

Semi-log displays of arc xenon lamp and quartz tungsten halogen (QTH) lamps... [Pg.180]

Quartz-Tungsten Halogen (QTH) Lamps. QTH lamps provide continuous output in the visible and infrared (IR) regions of the spectrum (Figure... [Pg.31]

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