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Author: E. Ray Huppi Publisher: ISBN: Category : Auroras Languages : en Pages : 96
Book Description
Infrared auroral backgrounds in the 3 micron region were measured with a filtered radiometer from a KC-135 aircraft. The measurements of temporal and spatial variations in the infrared were compared with simultaneous measurements of 3914A and 5577A visible radiation. Auroral measurements were obtained during dark and sunlit conditions. Frequency analysis shows the 3 micron and 5577A to be delayed and filtered relative to the prompt 3914A N2(+) emission. The ratio of 3 micron to 3914A emission varies by about a factor of 3 and appears to be a function of peak electron deposition altitude.
Author: E. Ray Huppi Publisher: ISBN: Category : Auroras Languages : en Pages : 96
Book Description
Infrared auroral backgrounds in the 3 micron region were measured with a filtered radiometer from a KC-135 aircraft. The measurements of temporal and spatial variations in the infrared were compared with simultaneous measurements of 3914A and 5577A visible radiation. Auroral measurements were obtained during dark and sunlit conditions. Frequency analysis shows the 3 micron and 5577A to be delayed and filtered relative to the prompt 3914A N2(+) emission. The ratio of 3 micron to 3914A emission varies by about a factor of 3 and appears to be a function of peak electron deposition altitude.
Author: E. Ray Huppi Publisher: ISBN: Category : Auroras Languages : en Pages : 0
Book Description
Infrared auroral backgrounds in the 3 micron region were measured with a filtered radiometer from a KC-135 aircraft. The measurements of temporal and spatial variations in the infrared were compared with simultaneous measurements of 3914A and 5577A visible radiation. Auroral measurements were obtained during dark and sunlit conditions. Frequency analysis shows the 3 micron and 5577A to be delayed and filtered relative to the prompt 3914A N2(+) emission. The ratio of 3 micron to 3914A emission varies by about a factor of 3 and appears to be a function of peak electron deposition altitude.
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 1126
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Irving L. Kofsky Publisher: ISBN: Category : Languages : en Pages : 100
Book Description
Nuclear infrared-backgrounds simulation data from excitation of the upper atmosphere by auroral particles and 3 kV electron beams from DNA/AFGL's EXCEDE: Spectral rocket are analyzed and interpreted. The delay of 2.8 - 3.1 micro radiation output from greater 1BC 11 aurora calculated by a cross-correlation method from aircraft measurements by instruments with footprint less than 1 km has an average value of 2 sec and (like the previously-measured energy conversion yields) appears to increase with the height of the maximum of the energy deposition rate profile. Fits of radiance data from moving arcs to a simple model of vibrational-bands emission from nitric oxide result in exponential predosing time constants between 1 1/2 and 2 1/2 sec, in qualitative agreement with current aerochemistry models. Volume emission rate distributions of the blue-violet air fluorescence within 20 m of EXCEDE's accelerator were unfolded from radiometric photographs taken at characteristic ejection altitudes from onboard. This emission decreases very rapidly away from the rocket, and transverse to the beam axis fits gaussian whose width first increases and then decreases. The measured excitation patterns, which cannot be fully attributed to outgassing from the vehicle, are interpreted in terms of a recent theoretical treatment of discharge initiation and electron heating resulting from an interaction between the charged beam and the local plasma it creates.
Author: I. L. Kofsky Publisher: ISBN: Category : Languages : en Pages : 169
Book Description
The data base on column intensity and spatial-temporal irregularity structure of 2 1/2 - 7 micrometers infrared auroral airglow radiations is reviewed, and models of occurrence of sky background clutter in sensor fields are specified. Probabilities and geographic location of auroral particle fluxes, energy conversion efficiencies and relaxation times after excitation, chemiluminescence and fluorescence spectrums of the important radiating species N0, C02, N2 and N0+ (at approx
Author: E. Ray Huppi
Author: E. Ray Huppi
Author: E. Ray Huppi
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Author: Irving L. Kofsky
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Author: I. L. Kofsky
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