Scaling of confinement with isotopic content in deuterium and tritium plasmas

C. K. Phillips, S. D. Scott, M. G. Bell, J. R. Wilson, R. Bell, C. E. Bush, H. H. Duong, J. C. Hosea, D. Jassby, R. Majeski, S. S. Medley, H. Park, M. P. Petrov, A. Ramsey, J. H. Rogers, G. Schilling, C. H. Skinner, E. Synakowski, G. Taylor

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Global energy confinement time in plasmas heated with waves in the ion cyclotron range of frequencies in the Tokamak Fusion Test Reactor is 8%–11% higher in deuterium-tritium (D-T) than in deuterium (D) only plasmas. Kinetic analysis based on local equilibrium profile measurements indicates that the increase in stored energy is almost entirely in the electron component and that the electron thermal diffusivity χe is smaller in D-T than in D plasmas. The implied scaling of χe with normalized ion gyro radius ρ* is opposite to that observed in Joint European Torus (JET) and DIII-D tokamaks when ρ* was varied by changing the magnetic field strength.

Original languageEnglish
Pages (from-to)1050-1053
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number6
DOIs
StatePublished - 1 Jan 1997

Fingerprint

Dive into the research topics of 'Scaling of confinement with isotopic content in deuterium and tritium plasmas'. Together they form a unique fingerprint.

Cite this