title: ÐÐ·Ð¼ÐµÑÐµÐ½Ð¸Ðµ ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¿Ð¾ÑÐ¾ÐºÐ¾Ð² ÑÐ°ÑÑÐ¸Ñ Ð² Ð¿ÑÐ¸ÑÑÐµÐ½Ð¾ÑÐ½Ð¾Ð¹ Ð¿Ð»Ð°Ð·Ð¼Ðµ ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐ° Â«ÐÐ»Ð¾Ð±ÑÑ-Ð2Â»
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Measurements of fluctuation-induced particle fluxes in the edge region of a âGlobus-M2â tokamak plasma
Creators: name: ÐÑÑÐ°Ð¼Ð¾Ð½Ð¾Ð², ÐÐ¸ÑÐ¸Ð»Ð»
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: ÑÐ¾ÐºÐ°Ð¼Ð°Ðº
ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð¿Ð¾ÑÐ¾Ðº
Ð°Ð½Ð¾Ð¼Ð°Ð»ÑÐ½ÑÐ¹ Ð¿ÐµÑÐµÐ½Ð¾Ñ
H-mode
Ð°Ð½Ð¾Ð¼Ð°Ð»ÑÐ½Ð°Ñ Ð´Ð¸ÑÑÑÐ·Ð¸Ñ
SOL
Ð·Ð¾Ð½Ð´ ÐÐµÐ½Ð³Ð¼ÑÑÐ°
tokamak
fluctuation-induced flux
anomalous transport
anomalous diffusion
Langmuir probe

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¸ÑÑÐµÐ½Ð¾ÑÐ½Ð¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸ ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐ° Â«ÐÐ»Ð¾Ð±ÑÑ-Ð2Â» (Ð¼Ð°Ð»ÑÐ¹ ÑÐ°Ð´Ð¸ÑÑ a = 0.24 Ð¼, Ð±Ð¾Ð»ÑÑÐ¾Ð¹ ÑÐ°Ð´Ð¸ÑÑ R = 0.36 Ð¼, ÑÐ¾ÑÐ¾Ð¸Ð´Ð°Ð»ÑÐ½Ð¾Ðµ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ðµ Ð¿Ð¾Ð»Ðµ BT = 0.5â0.9 Ð¢Ð», Ð¿Ð»Ð°Ð·Ð¼ÐµÐ½Ð½ÑÐ¹ ÑÐ¾Ðº Ip = 150â400 ÐºÐ). ÐÐ·Ð¼ÐµÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸Ð»Ð¸ÑÑ Ð¿ÑÐ¸ Ð¿Ð¾Ð¼Ð¾ÑÐ¸ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ»ÐµÐºÑÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´Ð²Ð¸Ð¶Ð½Ð¾Ð³Ð¾ Ð·Ð¾Ð½Ð´Ð° ÐÐµÐ½Ð³Ð¼ÑÑÐ° Ð½Ð° ÑÐ°ÑÑÑÐ¾ÑÐ½Ð¸Ð¸ R = 59 ÑÐ¼ Ð¿Ð¾ Ð±Ð¾Ð»ÑÑÐ¾Ð¼Ñ ÑÐ°Ð´Ð¸ÑÑÑ. ÐÐ²Ð° ÑÐ»ÐµÐºÑÑÐ¾Ð´Ð° Ð¸Ð·Ð¼ÐµÑÑÐ»Ð¸ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¿Ð¾Ð»Ðµ, ÐµÑÐµ Ð¾Ð´Ð¸Ð½ â Ð¸Ð¾Ð½Ð½ÑÐ¹ ÑÐ¾Ðº Ð½Ð°ÑÑÑÐµÐ½Ð¸Ñ. ÐÐ¾Ð»ÑÑÐµÐ½Ð½ÑÐµ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÐµ Ð´Ð°Ð½Ð½ÑÐµ Ð¾Ð±ÑÐ°Ð±Ð°ÑÑÐ²Ð°Ð»Ð¸ÑÑ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¾Ð¹, Ð½Ð°Ð¿Ð¸ÑÐ°Ð½Ð½Ð¾Ð¹ Ð½Ð° ÑÐ·ÑÐºÐµ Python Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÑÐ¾ÑÐ¾Ð½Ð½Ð¸Ñ Ð±Ð¸Ð±Ð»Ð¸Ð¾ÑÐµÐº. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÑÐ°Ð²Ð½Ð¸Ð²Ð°Ð»Ð¸ÑÑ Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð°Ð¼Ð¸ Ð´Ð°ÑÑÐ¸ÐºÐ¾Ð² D-alpha. ÐÑÐ»Ð¾ Ð¿ÑÐ¾Ð´ÐµÐ¼Ð¾Ð½ÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¾ Ð·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÐ¼ÐµÐ½ÑÑÐµÐ½Ð¸Ðµ ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾ÐºÐ° Ð¿ÑÐ¸ Ð¿ÐµÑÐµÑÐ¾Ð´Ðµ Ð² ÑÐµÐ¶Ð¸Ð¼ ÑÐ»ÑÑÑÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ´ÐµÑÐ¶Ð°Ð½Ð¸Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÑÑÐµÐºÑ Ð¿Ð¾Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ñ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¸ Ð¸ ÐºÐ¾Ð³ÐµÑÐµÐ½ÑÐ½Ð¾ÑÑÐ¸ ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¹ Ð¿Ð»Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð¸ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿Ð¾Ð»Ñ. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ Ð²ÑÑÐ¸ÑÐ»ÐµÐ½Ñ Ð¿Ð¾ÑÐ¾ÐºÐ¸, Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð½ÑÐµ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸ÐµÐ¹ ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¹ Ð¿Ð»Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð¸ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿Ð¾Ð»Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¾ÑÐµÐ½ÐµÐ½Ñ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐ¸Ðµ Ð¸Ð¼ ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½ÑÑ Ð´Ð¸ÑÑÑÐ·Ð¸Ð¸.
description: The given work is devoted to studying the edge plasma of âGlobus-M2â tokamak (minor radius a = 0.24 m, major radius R = 0.36 m, toroidal magnetic field BT = 0.5 â 0.9 T, plasma current Ip = 150 â 400 kA). Measurements were taken via multipin movable Langmuir probe at major radius R = 59 cm. Two electrical pins were used for measuring electric field, the third one â for measuring ion saturation current. Experimental data was processed via program, written in Python using external packages. Results were compared with D-alpha emission signals. A significant flux decrease was demonstrated when switching to H mode, as well as decreasing of coherence and correlation of electric field and density fluctuations. Fluctuation induced fluxes as well as diffusion coefficients were calculated.