Features of Narrowband Stimulated Electromagnetic Emission Depending on the Effective Radiated Power of the EISCAT/Heating Facility

A. S.  Kalishin; Калишин А. С.; N. F. Blagoveshchenskaya; Благовещенская Н. Ф.; T D. Borisova; Борисова Т. Д.; I. M. Egorov; Егоров И. М.; G. A. Zagorskiy; Загорский Г. А.; A. S. Kovalev; Ковалев А. С.

doi:10.31857/S0023420623600204

Features of Narrowband Stimulated Electromagnetic Emission Depending on the Effective Radiated Power of the EISCAT/Heating Facility

Authors: Kalishin A.S.¹, Blagoveshchenskaya N.F.¹, Borisova TD.¹, Egorov I.M.¹, Zagorskiy G.A.¹, Kovalev A.S.¹
Affiliations:
1. Arctic and Antarctic Research Institute, 199397, St. Petersburg, Russia
Issue: Vol 61, No 6 (2023)
Pages: 476-485
Section: Articles
URL: https://journals.rcsi.science/0023-4206/article/view/231815
DOI: https://doi.org/10.31857/S0023420623600204
EDN: https://elibrary.ru/CFXKDA
ID: 231815

Cite item

Full Text

Open Access
Restricted Access

Access granted
Restricted Access

Subscription Access

Abstract
About the authors
References
Supplementary files
Statistics

Abstract

Estimates of excitation thresholds and the analysis of spectral features of narrowband stimulated electromagnetic emission (NSEE) depending on the electric-field intensity of an extraordinary polarized HF pump wave have been carried out. They are based on results obtained during power stepping EISCAT/Heating experiments. The HF pump wave was radiated toward the magnetic zenith at frequency of 5.423 MHz. The effective radiated power was changed from 55 to 360 MW. NSEE was recorded in the vicinity of St. Petersburg at a distance of ~1200 km away of the EISCAT/Heating facility. Calculations of the electric field of a powerful HF radio wave near the reflection altitude taking into account the nondeviation absorption in the underlying layers were performed. The threshold (minimum) values of the electric field required for the NSEE excitation were determined.

References

Thidé B., Kopka H., Stubbe P. Observations of stimulated scattering of a strong high frequency radio wave in the ionosphere // Physics Review Lett. 1982. V. 49. P. 1561–1564. https://doi.org/10.1103/physrevlett.49.1561
Frolov V.L., Sergeev E.N., Ermakova G.P. et al. Spectral features of stimulated electromagnetic emissions, measured in the 4.3–9.5 MHz pump wave frequency range // Geophys. Res. Lett. 2001. V. 28. P. 3103–3106.
Leyser T.B. Stimulated electromagnetic emissions by high-frequency electromagnetic pumping of the ionospheric plasma // Space Science Reviews. 2001. V. 98. P. 223–328. https://doi.org/10.1023/a:1013875603938
Фролов В.Л. Искусственная турбулентность среднеширотной ионосферы. H. Новгород: Изд-во ННГУ им. Н.И. Лобачевского, 2017. ISBN 978-5-91326-355-1.
Bernhardt P.A., Selcher C.A., Lehmberg R.H. et al. Determination of the electron temperature in the modified ionosphere over HAARP using the HF pumped Stimulated Brillouin Scatter (SBS) emission lines // Ann. Geophys. 2009. V. 27. P. 4409–4427.
Mahmoudian A., Scales W.A., Bernhardt P.A. et al. Investigation of ionospheric stimulated Brillouin scatter generated at pump frequencies near electron gyroharmonics // Radio Science. 2013. V. 48. P 685–697. https://doi.org/10.1002/2013RS005189
Yellu A.D., Scales W.A., Mahmoudian A. et al. First Observations of Narrowband Stimulated Electromagnetic Emissions at the Pump Frequency Second Harmonic During Ionosphere Interaction Experiments // Geophysical Research Letters. 2018. V. 45. P. 8690–8697. https://doi.org/10.1029/2018GL078924
Shukla P.K., Stenflo L. Stimulated Brillouin scattering of electromagnetic waves in magnetized plasmas // J. Plasma Physics. 2010. V. 76. P. 853–855.
Samimi A., Scales W.A., Bernhardt P.A. et al. Ion gyroharmonic structures in stimulated radiation during second electron gyroharmonic heating: 2. Simulations // J. Geophysical Research: Space Physics. 2014. V. 119. P. 462–478. https://doi.org/10.1002/2013JA019341
Fu H.Y., Jiang M.L., Wang K.N. et al. Electron temperature inversion by stimulated brillouin scattering during electron gyro-harmonic heating at EISCAT // Geophysical Research Lett. 2020. V. 47. Iss. 17. https://doi.org/10.1029/2020GL089747
Kalishin A.S., Blagoveshchenskaya N.F., Borisova T.D. et al. Ion Gyro-Harmonic Structures in Stimulated Emission Excited by X-Mode High Power HF Radio Waves at EISCAT // J. Geophysical Research: Space Physics. 2021. V. 126. Art. ID. e2020JA028989. https://doi.org/10.1029/2020JA028989
Kalishin A.S., Blagoveshchenskaya N.F., Borisova T.D. et al. Comparison of Spectral Features of Narrowband Stimulated Electromagnetic Emission Excited by an Extraordinary Pump Wave in the High-latitude Ionospheric F Region at Frequencies be low and above the F2 Layer X-component Critical Frequency // Russian Meteorology and Hydrology. 2022. V. 47. Iss. 12. P. 921–930. https://doi.org/10.3103/S1068373922120032
Blagoveshchenskaya N.F., Borisova T.D., Kalishin A.S. et al. First observations of electron gyro-harmonic effects under X-mode HF pumping the high latitude ionospheric F-region // J. Atmospheric and Solar-Terrestrial Physics. 2017. V. 155. P. 36–49. https://doi.org/10.1016/j.jastp.2017.02.003
Blagoveshchenskaya N.F., Borisova T.D., Yeoman T.K. Modification of the high latitude ionosphere F region by X-mode powerful HF radio waves: Experimental results from multi-instrument diagnostics // J. Atmospheric and Solar-Terrestrial Physics. 2015. V. 135. P. 50–63. https://doi.org/10.1016/j.jastp.2015.10.009
Blagoveshchenskaya N.F., Borisova T.D., Kalishin A.S. et al. Comparison of the effects induced by the ordinary (O‑mode) and extraordinary (X-mode) polarized powerful HF radio waves in the high-latitude ionospheric F-region // Cosmic Research. 2018. V. 56. P. 11–25. https://doi.org/10.1134/S0010952518010045
Rietveld M.T., Senior A., Markkanen J., Westman A. New capabilities of the upgraded EISCAT high-power HF facility // Radio Sci. 2016. V. 51. Iss. 9. P. 1533–1546. https://doi.org/10.1002/2016RS006093
Rietveld M.T., Wright J.W., Zabotin N. et al. The Tromsø dynasonde // Polar Science. 2008. V. 2. P. 55–71. https://doi.org/10.1016/j.polar.2008.02.001
Rishbeth H., van Eyken A.P. EISCAT – early history and the first ten years of operation // J. Atmos. Terr. Phys. 1993. V. 55. Iss. 4–5. P. 525–542.
Lehtinen M.S., Huuskonen A. General incoherent scatter analysis and GUISDAP // J. Atmos. Sol. Terr. Phys. 1996. V. 58. P. 435–452.
Kalishin A.S., Blagoveshchenskaya N.F., Borisova T.D. et al. Remote Diagnostics of Effects Induced by High-latitude Heating Facilities // Russian Meteorology and Hydrology. 2021. V. 46. P. 231–240. https://doi.org/10.3103/S1068373921040038
Gurevich A.V. Nonlinear effects in the ionosphere // Physics-Uspekhi. 2007. V. 50. P. 1091–1121.
Robinson T.R. The heating of the high latitude ionosphere by high power radio waves // Phys. Rep. 1989. V. 179. P. 79–209.
Борисова Т.Д., Благовещенская Н.Ф., Калишин А.C. Особенности возбуждения искусственной ионосферной турбулентности при О- и Х-нагреве вблизи критической частоты слоя F2 // Солнечно-земная физика. 2023. Т. 9. № 1. С. 3–18. https://doi.org/10.12737/szf-81202201