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Title: Pfirsch–Schlüter neoclassical heavy impurity transport in a rotating plasma

In this paper, we extend previous analytic theories for the neoclassical transport of a trace heavy impurity in a rotating plasma in the Pfirsch-Schl¨uter regime. The complete diffusive and convective components of the ambipolar particle flux are derived. The solution is valid for arbitrary impurity charge and impurity Mach number and for general geometry. Inclusion of finite main ion temperature gradient effects is shown in the small ion Mach number limit. A simple interpolation formula is derived for the case of high impurity charge and circular geometry. While an enhancement of the diffusion coefficient is found for order one impurity Mach number, a reduction due to the rotation-driven poloidal asymmetry in the density occurs for very large Mach number.
Authors:
 [1] ;  [1] ;  [2]
  1. General Atomics, San Diego, CA (United States)
  2. Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (Germany)
Publication Date:
Grant/Contract Number:
FG02-95ER54309
Type:
Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 56; Journal Issue: 12; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Research Org:
General Atomics, San Diego, CA (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; neoclassical; drift-kinetic; transport; impurities; rotation
OSTI Identifier:
1356335

Belli, Emily A., Candy, Jefferey M., and Angioni, C.. Pfirsch–Schlüter neoclassical heavy impurity transport in a rotating plasma. United States: N. p., Web. doi:10.1088/0741-3335/56/12/124002.
Belli, Emily A., Candy, Jefferey M., & Angioni, C.. Pfirsch–Schlüter neoclassical heavy impurity transport in a rotating plasma. United States. doi:10.1088/0741-3335/56/12/124002.
Belli, Emily A., Candy, Jefferey M., and Angioni, C.. 2014. "Pfirsch–Schlüter neoclassical heavy impurity transport in a rotating plasma". United States. doi:10.1088/0741-3335/56/12/124002. https://www.osti.gov/servlets/purl/1356335.
@article{osti_1356335,
title = {Pfirsch–Schlüter neoclassical heavy impurity transport in a rotating plasma},
author = {Belli, Emily A. and Candy, Jefferey M. and Angioni, C.},
abstractNote = {In this paper, we extend previous analytic theories for the neoclassical transport of a trace heavy impurity in a rotating plasma in the Pfirsch-Schl¨uter regime. The complete diffusive and convective components of the ambipolar particle flux are derived. The solution is valid for arbitrary impurity charge and impurity Mach number and for general geometry. Inclusion of finite main ion temperature gradient effects is shown in the small ion Mach number limit. A simple interpolation formula is derived for the case of high impurity charge and circular geometry. While an enhancement of the diffusion coefficient is found for order one impurity Mach number, a reduction due to the rotation-driven poloidal asymmetry in the density occurs for very large Mach number.},
doi = {10.1088/0741-3335/56/12/124002},
journal = {Plasma Physics and Controlled Fusion},
number = 12,
volume = 56,
place = {United States},
year = {2014},
month = {11}
}