title: ÐÐ¸Ð·ÐºÐ¾Ð¿Ð¾ÑÐ¾Ð³Ð¾Ð²Ð°Ñ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ°ÑÐ¿Ð°Ð´Ð½Ð°Ñ Ð½ÐµÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÑ Ð¡ÐÐ§ Ð²Ð¾Ð»Ð½Ñ Ð¸ ÐµÐµ Ð½Ð°ÑÑÑÐµÐ½Ð¸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: Low-threshold parametric decay instability of the microwave wave and its saturation
Creators: name: ÐÐ°Ð³Ð¾Ð²Ð¸ÑÑÐ½, ÐÐ½Ð´ÑÐµÐ¹
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: Ð­Ð»ÐµÐºÑÑÐ¾Ð¼Ð°Ð³Ð½Ð¸ÑÐ½ÑÐµ Ð²Ð¾Ð»Ð½Ñ ÑÐ²ÐµÑÑ Ð²ÑÑÐ¾ÐºÐ¾ÑÐ°ÑÑÐ¾ÑÐ½ÑÐµ
ÑÐ»ÐµÐºÑÑÐ¾Ð½-ÑÐ¸ÐºÐ»Ð¾ÑÑÐ¾Ð½Ð½ÑÐ¹ ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐ½ÑÐ¹ Ð½Ð°Ð³ÑÐµÐ²
Ð°Ð±ÑÐ¾Ð»ÑÑÐ½Ð°Ñ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ°ÑÐ¿Ð°Ð´Ð½Ð°Ñ Ð½ÐµÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÑ
ÑÑÑÐµÐºÑ ÑÑÐ½Ð½ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ
Ð²ÐµÑÑ Ð½ÐµÐ³Ð¸Ð±ÑÐ¸Ð´Ð½ÑÐ¹ ÑÐµÐ·Ð¾Ð½Ð°Ð½Ñ
electron-cyclotron resonance heating
absolute parametric decay instability
tunneling effect
upper hybrid resonance

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description: The given work is devoted low-threshold parametric decay instability of the microwave wave and its saturation. Electron cyclotron resonance heating (ECRH) is a method that is widely utilized in current magnetic fusion devices. Microwaves propagating in inhomogeneous magnetized plasma can decay into two daughter waves. It has recently been shown that this decay can lead to the low threshold excitation of most dangerous absolute parametric decay instability (APDI). This phenomenon becomes inevitable if one or both of the daughter waves are trapped in a potential well. The qualitative and quantitative characteristics and features of these phenomena are determined by the saturation level of instability and the way in which this saturation is achieved. The purpose of this work is to study the features of the PRN and the mechanisms of its saturation, the development of programs describing this process, the refinement of the coefficients of nonlinear coupling of microwave waves at primary and secondary decays.In particular, the effect of radiation losses due to tunneling of the daughter wave through the opacity region in a potential well of finite height was investigated and described. This effect has not yet been taken into account in the program describing instability, and may play an important role in the transition of instability to saturation mode. As a result of the work, the development and saturation of parametric decay instability is numerically modeled taking into account secondary caries and wave tunneling from the localization region.