Further Evaluations of Infrared Simulation Data.

Kofsky, I. L.; Trowbridge, Christian A.; Villanucci, D. P.; Chamberlain, Malcolm T

doi:10.21236/ada119946

Cited by 3 publications

(1 citation statement)

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“…Details of the auroral viewing are described by Rawlins et al [!981a-I and Stair et al [1983]. The intensity of the auroral deposition within the field of view was carefully estimated for several scans from ground-based all-sky photographs, radar data, and observations of the (0, 0) band of the N2 + first negative (B2Y•u +--X2y•g +) system at 391.4 nm [Kofsky and Villanucci, 1979;Kofsky et al, 1978Kofsky et al, , 1980. The instrument orientations and estimated auroral intensities for the limb-viewing scans are listed in Table 1.…”

Section: Flight Characteristics and Spectral Datamentioning

confidence: 99%

HIRIS rocketborne spectra of infrared fluorescence in the O₃(ν₃) band near 100 km

Rawlins¹,

Caledonia²,

Gibson³

et al. 1985

J. Geophys. Res.

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High-resolution O3(v3) spectral emission data, obtained between 80 and 125 km during an aurora by the rocketborne HIRIS cryogenic interferometer spectrometer, have been analyzed by a spectral simulation/least squares technique. Data obtained below 110 km exhibit behavior independent of local auroral strength and thus appear to represent quiescent nightglow. The derived vibrational state population distributions for levels v 3' >_ 1 can be expressed as vibrational "temperatures" of 400-600 K. This result is interpreted in terms of formation of O3(1)3' ) by three-body recombination of O with 0 2 as well as other radiative and collisional processes. Additional data, obtained near 120 km and sampling intense auroral arcs, indicate a hitherto unexpected auroral enhancement of O3(V3) fluorescence intensity and vibrational state distribution.

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Section: Flight Characteristics and Spectral Datamentioning

confidence: 99%

HIRIS rocketborne spectra of infrared fluorescence in the O₃(ν₃) band near 100 km

Rawlins¹,

Caledonia²,

Gibson³

et al. 1985

J. Geophys. Res.

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Measurement and theory of the spatial distribution of excitation by high‐current electron beams injected into the ionosphere

Kofsky¹,

Villanucci²,

Sluder³

et al. 1984

Geophysical Research Letters

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Spatial distributions of energy deposition rates in EXCEDE Spectral's 3 keV, 7 A electron beam injection at E region altitudes derived from onboard photographic images of the air fluorescence are presented and compared with a time‐dependent computational model of the collective beam‐plasma interaction. The volume excitation rates decrease with a scale length of order 1 m near the rocket, are ∼2 orders of magnitude greater than predicted from single particle transport calculations, and at fixed distances from the accelerator vary by less than a factor 3 over an ambient density range of at least 40. The data are consistent with a discharge model in which the driving beam plasma instability is an absolute hydrodynamic instability with energy deposition controlled by trapping and axial dimension by ambipolar expansion of the plasma.

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Incoherent scatter observations of an artificially modified ionosphere

Wand¹,

Mendillo²

1984

J. Geophys. Res.

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The launch of NASA's HEAO‐C satellite by an Atlas/Centaur rocket on September 20, 1979, provided the first “experiment of opportunity” to test incoherent scatter radar techniques for the diagnostic study of a chemically‐induced modification of the ionosphere. The cause of the disturbance was the rocket's exhaust cloud of H2 and H2O molecules that cause a rapid recombination of the F region plasma at heights above 250 km. The launch from the Kennedy Space Center (28°N, 81°W) was monitored by the incoherent scatter radar at Millstone Hill (42.6°N, 71.5°W) using low elevation angle observations over ranges exceeding 2000 km. The experiment employed various pulse lengths, integration times and scanning modes to explore optimization methods for an upcoming series of Space Shuttle induced ionospheric hole experiments. The results from the HEAO‐hole campaign include the first unambiguous observations of a gas expansion “snowplow effect,” the derivation of local and height‐integrated plasma recombination rates, and the full spatial, temporal, and dynamical morphologies of a large‐scale ionospheric hole. The campaign succeeded in demonstrating that incoherent scatter radars can play a primary role in space plasma physics “active experiments” during the next decade.

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Further Evaluations of Infrared Simulation Data.

Cited by 3 publications

References 1 publication

HIRIS rocketborne spectra of infrared fluorescence in the O₃(ν₃) band near 100 km

HIRIS rocketborne spectra of infrared fluorescence in the O₃(ν₃) band near 100 km

Measurement and theory of the spatial distribution of excitation by high‐current electron beams injected into the ionosphere

Incoherent scatter observations of an artificially modified ionosphere

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Further Evaluations of Infrared Simulation Data.

Cited by 3 publications

References 1 publication

HIRIS rocketborne spectra of infrared fluorescence in the O3(ν3) band near 100 km

HIRIS rocketborne spectra of infrared fluorescence in the O3(ν3) band near 100 km

Measurement and theory of the spatial distribution of excitation by high‐current electron beams injected into the ionosphere

Incoherent scatter observations of an artificially modified ionosphere

Contact Info

Product

Resources

About

HIRIS rocketborne spectra of infrared fluorescence in the O₃(ν₃) band near 100 km

HIRIS rocketborne spectra of infrared fluorescence in the O₃(ν₃) band near 100 km