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|Title:||Nocturnal Variation of Total Absorption & Nighttime E-Region|
|Authors:||Jain, S L|
Rai, R K
|Abstract:||The results of a study on ionospheric absorption during night hours at Udaipur (23o 35'N) are presented. In the nocturnal variation of the total absorption, a dip is observed during twilight hours. The higher value of absorption observed during the night hours as compared to that during twilight hours is attributed to ionization in the E-region caused by geocoronal Lyman-β and Lyman-ɑ. The electron density at the peak of the nighttime E-region is estimated to be of the order of 104 electron/cm3.|
|ISSN:||0975-105X (Online); 0367-8393 (Print)|
|Appears in Collections:||IJRSP Vol.05(3) [September 1976]|
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