Diagnostics of density fluctuations by enhanced scattering with frequency-tunable microwave sources

Olgierd Dumbrajs, Jukka Heikkinen, Karin Sarparanta, Seppo Sipilä, Kira Novik, Alexander Piliya

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2 Citations (Scopus)


The enhanced scattering diagnostics method based on the scattering of microwaves close to the upper hybrid resonance in the plasma has a high sensitivity and spatial resolution and makes it possible to observe the plasma density fluctuations with characteristic scale-lengths much smaller than the wavelength of the probing radiation in vacuum.
Good spatial resolution for spatial positioning of the scattering volume by fast tuning of the source frequency ±5% around the reference frequency in the range 100–300 GHz at high power makes this diagnostic method particularly suitable for fluctuation and high energy particle measurements in tokamak plasmas with relatively flat density and temperature profiles.
Original languageEnglish
Pages (from-to)307-315
JournalInternational Journal of Infrared and Millimeter Waves
Issue number1
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed


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