title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð½ÐµÐ¾Ð´Ð½Ð¾ÑÐ¾Ð´Ð½Ð¾ÑÑÐ¸ Ð¿Ð¾Ð»Ð¾Ð¸Ð´Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²ÑÐ°ÑÐµÐ½Ð¸Ñ Ð¿Ð»Ð°Ð·Ð¼Ñ Ð² Ð¾ÐºÑÐµÑÑÐ½Ð¾ÑÑÐ¸ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ ÐÐÐ Ð½ÐµÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÐ¸ Ð½Ð° ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐµ Ð¤Ð¢-2 Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð¼Ð¸ÐºÑÐ¾Ð²Ð¾Ð»Ð½Ð¾Ð²Ð¾Ð³Ð¾ Ð´Ð¾Ð¿Ð»ÐµÑÐ¾Ð²ÑÐºÐ¾Ð³Ð¾ Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð² Ð²ÐµÑÑ Ð½ÐµÐ¼ Ð³Ð¸Ð±ÑÐ¸Ð´Ð½Ð¾Ð¼ ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐµ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Study of inhomogeneity of poloidal plasma rotation in vicinity of MHD instability generation in FT-2 tokamak by using microwave doppler backscattering in upper hybrid resonance technique
Creators: name: ÐÐ°ÑÑÑÐµÐ², ÐÐµÐ½Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÐÐ»Ð°Ð·Ð¼Ð° (ÑÐ¸Ð·.)
Ð¯Ð´ÐµÑÐ½ÑÐµ ÑÐµÐ°ÐºÑÐ¾ÑÑ
Ð¼Ð¸ÐºÑÐ¾Ð²Ð¾Ð»Ð½Ð¾Ð²Ð¾Ðµ ÑÐ°ÑÑÐµÑÐ½Ð¸Ðµ
Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ðµ ÑÑÐ¸Ð»ÐµÐ½Ð½Ð¾Ðµ ÑÐ°ÑÑÐµÑÐ½Ð¸Ðµ Ð² Ð²ÐµÑÑ Ð½ÐµÐ¼ Ð³Ð¸Ð±ÑÐ¸Ð´Ð½Ð¾Ð¼ ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐµ
ÑÐ¸ÑÐ¸Ð½Ð³-Ð¼Ð¾Ð´Ð°
ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ ÑÑÐ¸Ð»ÐµÐ½Ð½Ð¾Ðµ ÑÐ°ÑÑÐµÑÐ½Ð¸Ðµ
Ð²Ð¾Ð·Ð¼ÑÑÐµÐ½Ð¸Ðµ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ Ð¿Ð¾Ð»Ð¾Ð¸Ð´Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²ÑÐ°ÑÐµÐ½Ð¸Ñ Ð²Ð½ÑÑÑÐ¸ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð¾ÑÑÑÐ¾Ð²Ð°
microwave scattering
enhanced backscattering in upper hybrid resonance
tearing mode
correlative enhanced scattering
perturbation of poloidal rotation velocity inside a magnetic island

description: Ð¦ÐµÐ»ÑÑ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð¸Ð·ÑÑÐµÐ½Ð¸Ðµ ÑÐ²Ð»ÐµÐ½Ð¸Ñ Ð²Ð¾Ð·Ð¼ÑÑÐµÐ½Ð¸Ñ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ Ð¿Ð¾Ð»Ð¾Ð¸Ð´Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²ÑÐ°ÑÐµÐ½Ð¸Ñ Ð¿Ð»Ð°Ð·Ð¼Ñ Ð²Ð½ÑÑÑÐ¸ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð¾ÑÑÑÐ¾Ð²Ð° Ñ ÐºÐ¾Ð½ÑÐ¸Ð³ÑÑÐ°ÑÐ¸ÐµÐ¹ mân=2â1 Ð¿ÑÐ¸ Ð¿Ð¾Ð¼Ð¾ÑÐ¸ ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð´Ð¸Ð°Ð³Ð½Ð¾ÑÑÐ¸ÐºÐ¸ Ð´Ð¾Ð¿Ð¿Ð»ÐµÑÐ¾Ð²ÑÐºÐ¾Ð³Ð¾ ÑÑÐ¸Ð»ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð¸ ÐÐÐ-Ð·Ð¾Ð½Ð´Ð¾Ð². Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð² Ð¾Ð±Ð»Ð°ÑÑÐ¸, Ð·Ð°Ð½Ð¸Ð¼Ð°ÐµÐ¼Ð¾Ð¹ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½ÑÐ¼ Ð¾ÑÑÑÐ¾Ð²Ð¾Ð¼, Ð±ÑÐ»Ð¾ Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¾ ÐºÐ¾Ð»ÐµÐ±Ð°Ð½Ð¸Ðµ Ð´Ð¾Ð¿Ð¿Ð»ÐµÑÐ¾Ð²ÑÐºÐ¾Ð³Ð¾ ÑÐ°ÑÑÐ¾ÑÐ½Ð¾Ð³Ð¾ ÑÐ´Ð²Ð¸Ð³Ð° ÑÐ¿ÐµÐºÑÑÐ° ÑÑÐ¸Ð»ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð½Ð° ÑÐ°ÑÑÐ¾ÑÐµ Ð²ÑÐ°ÑÐµÐ½Ð¸Ñ Ð¾ÑÑÑÐ¾Ð²Ð°. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð²ÑÐ°ÑÐ°ÑÑÐµÐ³Ð¾ÑÑ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð¾ÑÑÑÐ¾Ð²Ð° mân=2â1Â Ñ ÐºÐ¾Ð½ÐµÑÐ½ÑÐ¼ Ð²Ð¾Ð·Ð¼ÑÑÐµÐ½Ð¸ÐµÐ¼ Ð¿Ð»Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð±ÑÐ»Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ Ð¾ÑÐµÐ½ÐºÐ¸ Ð²ÐµÐ»Ð¸ÑÐ¸Ð½Ñ ÐºÐ¾Ð»ÐµÐ±Ð°Ð½Ð¸Ð¹ Ð´Ð¾Ð¿Ð¿Ð»ÐµÑÐ¾Ð²ÑÐºÐ¾Ð³Ð¾ ÑÐ´Ð²Ð¸Ð³Ð°, Ð²ÑÐ·Ð²Ð°Ð½Ð½ÑÐµ Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐµÑÐºÐ¸Ð¼ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ Ð¿ÑÐ¾ÐµÐºÑÐ¸Ð¸ Ð²Ð¾Ð»Ð½Ð¾Ð²Ð¾Ð³Ð¾ Ð²ÐµÐºÑÐ¾ÑÐ° Ð·Ð¾Ð½Ð´Ð¸ÑÑÑÑÐµÐ¹ Ð²Ð¾Ð»Ð½Ñ Ð½Ð° Ð¿Ð¾Ð»Ð¾Ð¸Ð´Ð°Ð»ÑÐ½Ð¾Ðµ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ Ð¸ ÑÐ¼ÐµÑÐµÐ½Ð¸ÐµÐ¼ Ð¾Ð±Ð»Ð°ÑÑÐ¸ ÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð½Ð° ÑÐ¾Ð½Ðµ ÑÐ°Ð´Ð¸Ð°Ð»ÑÐ½Ð¾Ð¹ Ð½ÐµÐ¾Ð´Ð½Ð¾ÑÐ¾Ð´Ð½Ð¾ÑÑÐ¸ ÑÑÐµÐ´Ð½ÐµÐ¹ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ Ð²ÑÐ°ÑÐµÐ½Ð¸Ñ Ð¿Ð»Ð°Ð·Ð¼Ñ. Ð ÑÐ¾ Ð¶Ðµ Ð²ÑÐµÐ¼Ñ, Ð½Ð° ÐºÑÐ°ÑÑ Ð¾ÑÑÑÐ¾Ð²Ð° Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð½ÑÐµ ÐºÐ¾Ð»ÐµÐ±Ð°Ð½Ð¸Ñ Ð´Ð¾Ð¿Ð¿Ð»ÐµÑÐ¾Ð²ÑÐºÐ¾Ð³Ð¾ ÑÐ´Ð²Ð¸Ð³Ð° Ð¾ÐºÐ°Ð·Ð°Ð»Ð¸ÑÑ ÑÐ²ÑÐ·Ð°Ð½Ñ Ñ Ð²Ð¾Ð·Ð¼ÑÑÐµÐ½Ð¸ÑÐ¼Ð¸ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ Ð¿Ð¾Ð»Ð¾Ð¸Ð´Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²ÑÐ°ÑÐµÐ½Ð¸Ñ Ð² Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð¼ Ð¾ÑÑÑÐ¾Ð²Ðµ.
description: The given work is devoted to studying the phenomenon of perturbation of plasma poloidal rotation velocity inside a magnetic island with configuration mân=2â1 by combined usage of the doppler enhanced scattering technique and MHD-probes. As a result of this work an oscillation of doppler frequency shift of the enhanced scattering spectrum at the island rotation frequency was found inside magnetic island region. Estimates were obtained for the magnitude of the doppler shift oscillations, caused by a periodic change in the projection of the wave vector of the probing wave onto the poloidal direction and a shift against the background of a radial inhomogeneity of the average plasma rotation velocity in the scattering region, based on the simulation of a rotating magnetic island mân=2â1 with finite density perturbation. At the same time, the measured doppler shift oscillations at the edges of the island turned out to be associated with perturbations of the poloidal rotation velocity in the magnetic island.