|approved||sherwood_2022_poster___bce_1apr22_corrected_15apr22___submitted_online.pdf||2022-04-15 19:16:27||CHIPING CHEN|
Author: CHIPING CHEN
Requested Type: Consider for Invited
Submitted: 2022-03-02 21:11:14
Co-authors: J.R. Becker, J.J. Farrell
Beyond Carbon Energy, LLC
12 San Rafael Avenue
Belvedere , CA 94920
The single most important scientific question in fusion research may be confinement in a fusion plasma . A recently-developed theoretical model  is reviewed for the confinement time of ion kinetic energy in a material where fusion reactions occur. In the theoretical model where ion stopping was considered as a key mechanism for ion kinetic energy loss, an estimate was obtained for the confinement time of ion kinetic energy in a D-T plasma - and found to be orders of magnitude lower than required in the Lawson criterion. As ions transfer their kinetic energies to electrons via ion stopping and thermalization between the ions and the electrons takes place, spontaneous electron cyclotron radiation is identified as a key mechanism for electron kinetic energy loss in a magnetically confined plasma. The energy confinement time is obtained and found in agreement with measurements from TFTR  and Wendelstein 7-X . An advanced Lawson criterion is obtained for a magnetically confined thermonuclear fusion reactor.
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1. Plasma Properties, Equilibrium, Stability and Transport