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DETERMINATION OF D-REGION TIME CONSTANTS FOR ELECTRON COOLING AND ELECTRON DENSITY PROFILES FROM PHASE OR AMPLITUDE WAVE INTERACTION MEASUREMENTS,
PENNSYLVANIA STATE UNIV UNIVERSITY PARK IONOSPHERE RESEARCH LAB
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A technique was developed for determining electron density profiles in the D-region from measurements of either phase or amplitude wave interaction. The method accounts for the effects of underlying ionization and a wanted pulse of finite width, while assumptions inherent in the methods of previous workers are relaxed. Two techniques are developed for the determination of D-region time constants for cooling from either phase or amplitude wave interaction measurements. Neither technique necessitates employing a gyro-wave disturbing signal. In one method an iterative partial sum per cent error procedure is used to find the best exponential profile for the interaction measurements. This technique accounts for the effect of underlying ionization. In the other method a value of the time constant is determined for the region of dominant heating from the slope of the interaction curve at upper heights. Both of these techniques have been extended to include the effects of a wanted pulse of finite width. Author
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