IMMEDIATE SOLAR FLARE EFFECTS. Semi-annual Technical Report, March 26- September 26, 1961
The effective electron collision frequencies in the Dregion of the ionosphere are revised. It was found that because of two compensating errors the old and new values of electron collision frequency agree reasonably well. The electron density as a function of time and altitude ww as computed for a model SID (Spontaneous Ionospheric Disturbance). The model x-ray spectrum responsible for the SID was derived from rocket measurements made during a solar flare. Two models for the electron recombination rate were used, one was derived from laboratory measurement and the other was an empirical model independently determined. SCNA (Sudden Cosmic Noise Absorption) and SPA (Sudden Phase Anomaly) effects were computed from the resulting electron densities. The recombination rate determined from laboratory measurements did not give satisfactory results. (auth)
- Research Organization:
- Avco Corp. Research and Advanced Development Div., Wilmington, Mass.
- DOE Contract Number:
- AF19(604)-8058
- NSA Number:
- NSA-16-032250
- OSTI ID:
- 4774482
- Report Number(s):
- RAD-SR-62-19; AD-271949; AFCRL
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-62
- Country of Publication:
- United States
- Language:
- English
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