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http://nopr.niscpr.res.in/handle/123456789/19333| Title: | Diffusion coefficient and wave amplification determination from pitch angle dependent kinetic energy of electrons |
| Authors: | Singh, D P Singh, U P |
| Keywords: | Diffusion coefficient;Wave amplification;Thermal anisotropy |
| Issue Date: | Aug-2004 |
| Publisher: | NISCAIR-CSIR, India |
| PACS No.: | 94.10 Lf, 94.20 Rr, 94.30 Hn |
| Abstract: | A new expression for diffusion coefficient D (α) is derived, which is a function of pitch angle (α) dependent kinetic energy of electrons. Pitch angle diffusion of electrons along with amplification o f interacting VLF signals is studied at L= 5.1. Diffusion coefficient D (α) has been found to increase but temporal wave growth (r) and power gain (in dB) decrease with increase in pitch angle. The derived expression for D (α) is found to be convenient for numerical analysis. The results are interpreted in the light of observation/analysis of transmitted signals by Sonwalkar et al. [J Geophys Res (USA), 102 (1997) 14363]. The non-observation of 2.55-2.9 kHz signals is attributed to scarcity of suitable pitch angle anisotropy, A(Er) · |
| Page(s): | 234-240 |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Appears in Collections: | IJRSP Vol.33(4) [August 2004] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJRSP 33(4) 234-240.pdf | 1.69 MB | Adobe PDF | View/Open |
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