On the linear stage of thermal parametric instabilities in the ionosphere excited by HF pumping near electron gyroharmonics

Details On the linear stage of thermal parametric instabilities in the ionosphere excited by HF pumping near electron gyroharmonics On the linear stage of thermal parametric instabilities in the ionosphere excited by HF pumping near electron gyroharmonics

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006adspr..38.2527n&link_type=abstract

Advances in Space Research, Volume 38, Issue 11, p. 2527-2532.

Physics

3

Scientific paper

Thresholds and growth rates of the thermal parametric instability in the ionosphere were studied taking into account the regular inhomogeneity (altitude dependence) of the plasma density and of the magnetic field strength. A noticeable decrease of the pump wave threshold power and an increase of the growth rate occurs when f0 approaches the double resonance frequency fd = nfce(zd) = fUH(zd), zd being the altitude for double resonance. Particularly, the threshold power decreases relative to the non-resonant case by a factor 3 7 at |f0 - fd(zd)| ≲ 15 kHz for n = 3 and up to a factor 3 for n = 4. The instability growth rate can increase with a factor of 103 104 relative to the non-resonant case. The decrease of the threshold and increase of the growth rate occur for quite small scales of the striations, l⊥ ˜ 1 m for n = 3 and l⊥ ˜ 0.5 m for n = 4.

Affiliated with

Also associated with

No associations

Rating

On the linear stage of thermal parametric instabilities in the ionosphere excited by HF pumping near electron gyroharmonics 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 On the linear stage of thermal parametric instabilities in the ionosphere excited by HF pumping near electron gyroharmonics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the linear stage of thermal parametric instabilities in the ionosphere excited by HF pumping near electron gyroharmonics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1282551