Other
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa43a1879f&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SA43A-1879
Other
[2403] Ionosphere / Active Experiments, [2439] Ionosphere / Ionospheric Irregularities
Scientific paper
The HAARP 3.6MW HF transmitter can excite a broad spectrum of Stimulated Electromagnetic Emission (SEE) lines, which can be utilized as a tool to provide useful diagnostics during modification of the ionosphere. The HAARP transmitter beam angle has been confirmed as an important factor for exciting the ion acoustic (IA) and electrostatic ion cyclotron wave (EIC) spectrum lines by the process called Magnetized Stimulated Brillouin Scatter (MSBS) for SEE generation. Such SEE lines can be used for electron temperature and ion composition diagnostic purposes. The experiment conducted at 2010 HAARP summer school aimed to look more thoroughly at a broader range of heater beam angle effects on low frequency SEE emission lines generated by MSBS. The experimental results show that two stronger IA emission lines and two EIC spectrum emission lines were observed by the O-mode excitation near the reflection and upper hybrid resonance region in the F layer of the ionosphere. With tilting angles far away from magnetic zenith, there exists a critical heater power beam angle, where two EIC spectrum lines appear in the lower SEE spectrum. The newly observed EIC line is considered to originate from the upper hybrid resonance region. The experiment conducted at 2011 HAARP research campaign aims to excite stronger EIC emission lines by the MSBS process to confirm theoretical prediction. In addition, the MSBS process impacted by the heater beam angle is also investigated near the 2nd electron gyro harmonic. Observations show possibly unobserved SEE spectrum lines by other process, which could be related to the MSBS process. These may be due to strong electron temperature enhancement. The possibility will be discussed in more detail during the presentation.
Bernhardt Paul A.
Fu Haixiang
Scales Wayne
No associations
LandOfFree
Heater Beam Angle Effect on Stimulated Electromagnetic Emission in a Magnetized Ionospheric Plasma using the HAARP transmitter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Heater Beam Angle Effect on Stimulated Electromagnetic Emission in a Magnetized Ionospheric Plasma using the HAARP transmitter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heater Beam Angle Effect on Stimulated Electromagnetic Emission in a Magnetized Ionospheric Plasma using the HAARP transmitter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-875201