Effective electron recombination coefficient in ionospheric D-region during the relaxation regime after solar flare from February 18, 2011

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:279

Article; Proceedings Paper

Nina, A.²  Cadez, V.³  Sulic, D.¹  Sreckovic, V.²  Zigman, V.⁴ 

[1] Union Nikola Tesla Univ, Fac Ecol & Environm Protect, Belgrade 11000, Serbia

[2] Univ Belgrade, Inst Phys, Belgrade, Serbia

[3] Astron Observ, Belgrade 11060, Serbia

[4] Univ Nova Gorica, SI-5000 Nova Gorica, Slovenia

关键词: Electron concentration;    Photo-ionization;    Electron recombination;    Solar flare;    Ionosphere;   

DOI  :  10.1016/j.nimb.2011.10.026

来源: Elsevier

【 摘 要 】

In this paper, we present a model for determination of a weakly time dependent effective recombination coefficient for the perturbed terrestrial ionospheric D-region plasma. We study consequences of a class M1.0 X-ray solar flare, recorded by GOES-15 satellite on February 18, 2011 between 14:00 and 14:15 UT, by analyzing the amplitude and phase real time variations of very low frequency (VLF) radio waves emitted by transmitter DHO (located in Germany) at frequency 23.4 kHz and recorded by the AWESOME receiver in Belgrade (Serbia). Our analysis is limited to ionospheric perturbations localized at altitudes around 70 km where the dominant electron gain and electron loss processes are the photo-ionization and recombination, respectively. (C) 2011 Elsevier B.V. All rights reserved.

【 授权许可】

Free