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

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

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

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
Volume16
Issue number1
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

Fingerprint

Microwaves
Scattering
microwaves
spatial resolution
scattering
Plasmas
Plasma density
particle energy
temperature profiles
plasma density
positioning
Tuning
tuning
Vacuum
Radiation
Wavelength
vacuum
sensitivity
radiation
profiles

Cite this

Dumbrajs, Olgierd ; Heikkinen, Jukka ; Sarparanta, Karin ; Sipilä, Seppo ; Novik, Kira ; Piliya, Alexander. / Diagnostics of density fluctuations by enhanced scattering with frequency-tunable microwave sources. In: International Journal of Infrared and Millimeter Waves. 1995 ; Vol. 16, No. 1. pp. 307-315.
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abstract = "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.",
author = "Olgierd Dumbrajs and Jukka Heikkinen and Karin Sarparanta and Seppo Sipil{\"a} and Kira Novik and Alexander Piliya",
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Diagnostics of density fluctuations by enhanced scattering with frequency-tunable microwave sources. / Dumbrajs, Olgierd; Heikkinen, Jukka; Sarparanta, Karin; Sipilä, Seppo; Novik, Kira; Piliya, Alexander.

In: International Journal of Infrared and Millimeter Waves, Vol. 16, No. 1, 1995, p. 307-315.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Diagnostics of density fluctuations by enhanced scattering with frequency-tunable microwave sources

AU - Dumbrajs, Olgierd

AU - Heikkinen, Jukka

AU - Sarparanta, Karin

AU - Sipilä, Seppo

AU - Novik, Kira

AU - Piliya, Alexander

PY - 1995

Y1 - 1995

N2 - 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.

AB - 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.

U2 - 10.1007/BF02085865

DO - 10.1007/BF02085865

M3 - Article

VL - 16

SP - 307

EP - 315

JO - Journal of Infrared, Millimeter, and Terahertz Waves

JF - Journal of Infrared, Millimeter, and Terahertz Waves

SN - 1866-6892

IS - 1

ER -