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Physics of Plasmas : Anomalous impurity ion heating from Alfvénic cascade in the reversed field pinch

By Varun Tangri, P. W. Terry, and Gennady Fiksel

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Book Id: WPLBN0002169641
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 3 November 2008

Title: Physics of Plasmas : Anomalous impurity ion heating from Alfvénic cascade in the reversed field pinch  
Author: Varun Tangri, P. W. Terry, and Gennady Fiksel
Volume: Issue : November 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Physics of Plasmas Collection
Historic
Publication Date:
Publisher: American Institute of Physics

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P. W. Terry, And Gennady Fikse, V. T. (n.d.). Physics of Plasmas : Anomalous impurity ion heating from Alfvénic cascade in the reversed field pinch. Retrieved from http://worldjournal.org/


Description
Description: Anomalous ion and impurity heating in reversed field pinch plasmas is addressed. Previous work [ N. Mattor et al., Comments Plasma Phys. Controlled Fusion 15, 65 (1992) ], which calculated the heating of bulk ions by gyro and Landau resonances with turbulent fluctuations cascading from unstable tearing modes, is extended to impurity species measured in Madison symmetric torus (MST). The heavier mass of impurities allows gyro-resonant heating at lower frequencies where more energy is present in the fluctuations. A 0D transport model is used to examine heating rates under various time-dependent, experimental heating scenarios, such as a sawtooth crash. Impurity heating rates calculated for impurities found in MST are comparable to observed rates inferred in the impurity temperature rise during sawtooth events.

 
 


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