6300 Å quantum efficiency of the recombination mechanism in the night-time F layer

Brown, W. E.; Steiger, Walter R.

doi:10.1016/0032-0633(72)90136-5

Cited by 21 publications

(8 citation statements)

References 32 publications

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“…There is considerable uncertainty in the estimate of Ka. Its value has been estimated in the range of 0.1 and 1 [Forbes, 1970;Zip[, 1970;Brown and Steiger, 1972]. We have adopted a value of 0.4 for Ka and 0.8 for S in our calculations.…”

Section: Instrumentationmentioning

confidence: 99%

Equatorial airglow and the ionospheric geomagnetic anomaly

Chandra¹,

Reed²,

Troy³

et al. 1973

J. Geophys. Res.

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Ogo 4 observations of the O I (6300‐A) emissions have revealed a global pattern hitherto undetected from the ground‐based observations. It is seen that the postsunset emission of O I (6300 A) in October 1967 is very asymmetrical with respect to the geomagnetic equator in certain longitude regions and shows poor correlation with the electron density measured simultaneously from the same spacecraft. This asymmetry is less marked in the UV airglow, O I (1356 A), which appears to vary as the square of the maximum electron density in the F region. The horizon scan data of the 6300‐A airglow reveal that the latitudinal asymmetry is associated with asymmetry in the height of the O I (6300‐A) emission and hence with the altitude of the F2 peak. From the correlative studies of the airglow and the ionospheric measurements the mechanisms for the UV and the 6300‐A emissions are discussed in terms of the processes involving radiative and dissociative recombination. Theoretical expressions are developed relating the airglow data to the ionospheric parameters, and it is shown that the agreement between observed and calculated emission rates is well within the uncertainty of the measurements.

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Section: Instrumentationmentioning

confidence: 99%

Equatorial airglow and the ionospheric geomagnetic anomaly

Chandra¹,

Reed²,

Troy³

et al. 1973

J. Geophys. Res.

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show abstract

“…Airglow enhancements during the nights are generally found to be associated with the TEC enhancements. A comparison has also been made between the night airglow variation and the negative rate of change of the content as was done by Brown and Steiger (1972). The variation in airglow intensity seems to correlate better with rate of change of content.…”

Section: Discussionmentioning

confidence: 99%

“…After airglow enhancements the two curves are straight and parallel indicating exponential decay ofthe form e-$t where ~f3=12.21 x 10-4 sec 1 . Assuming negative derivative of total electron content with respect to time being proportional to airglow enhancement (Brown and Steiger, 1972) we plot in Fig. 10 the airglow intensity values as a function of-dNT/dt for the corresponding nights during the time of enhancement of airglow intensity.…”

Section: Resultsmentioning

confidence: 99%

“…We have used the value of 4' as 0.17 on the basis of observations (Brown and Steiger, 1972) in the numerical computation of night airglow.…”

Section: Model Calculationmentioning

confidence: 99%

“…Simultaneous measurements of airglow and total electron content measurements have been used earlier by Brown and Steiger (1972) to infer the number of 6300 and 6364 A quanta produced per electron lost in the night time F layer of the ionosphere at Hawaii. They also found out from the recorded observations that the airglow intensity variation is more closely related to the time rate of change of content.…”

Section: Introductionmentioning

confidence: 99%

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