Resolved line profiles of atomic oxygen resonance lamps used in the upper atmosphere

Rocket observations of atomic oxygen density and airglow emission rate in the WAVE2000 campaign

“…where n is the total O density, gJ and EJ are the statistical weight and the potential energy, respectively, of the J th level, k is Boltzmann's constant, T is the temperature (=290 K); e 2 =mc 2 = 2:82 × 10 −13 cm; J is the 1=e Doppler half-width of an absorption line, 0J is wavenumber of the J th line center, and f is the oscillator strength (=0:053 ± 0:006) by Jenkins et al (1985). Following their model, the emission line proÿle of the lamp IJ ( ) is assumed to have a double-Doppler proÿle composed of 350 K (85%) and 5500 K (15%) components, and the integrated line intensity ratio is taken as 1:2.8:3.9 for J = 0; 1; 2, respectively.…”

Balloon-borne resonance fluorescence instrument for in-situ measurement of atomic oxygen: Simultaneous measurement with ozone at 38–44 km

“…The OI resonance lamp is an intensive light source of the 130.2, 130.5 and 130.6 nm triplet lines ( 3 S→ 3 P) by utilizing a radio frequency (RF) discharge in a mixture of atomic oxygen and helium gas. The resonance lamp is almost identical with that of Jenkins et al (1985). The VUV detector is a photomultiplier-tube (PMT) with a CsI photocathode and a MgF 2 window used in the photon counting mode.…”

“…I J (ν) (J = 0, 1, 2) are the spectral irradiances of the 130.6 nm, 130.5 nm and 130.2 nm lines, respectively. In accordance with the theoretical model presented by Jenkins et al (1985), the relative intensities of I J (ν) were expressed in terms of double Gaussian spectral line profile with selfabsorption, assuming that 15% of atomic oxygen in the lamp had the temperature of 5500 K, and 85% had the temperature of 350 K. The self-absorption effect, the optical thickness in the lamp, was determined based upon the lamp spectrum measured using a high resolution VUV spectrometer. L is the path length from the lamp to the scattering point; L is the path length from the scattering point to the PMT; D is the scattering volume; ν is wavenumber.…”

Use of O<sub>2</sub> airglow for calibrating direct atomic oxygen measurements from sounding rockets

“…Rawlins and Kaufman, 1977). The only direct measurement of resolved lamp emission line shapes have been reported by Jenkins et al (1985).…”

“…While the atmospheric absorption line shape is essentially determined by Doppler broadening at the atmospheric temperature, the emitted lamp line shape is only known with limited accuracy. Our NLTE analysis is based on the line shape results reported by Jenkins et al (1985) from laboratory measurements with various lamp parameters. The stability of the lamp output before and during flight is an additional source of uncertainty.…”