Depolarization of D-T Plasmas by Recycling in Material Walls

Published

Journal Article

The feasibility of using polarized deuterium (D) and tritium (T) plasmas in fusion reactors may be seriously affected by recycling in material walls. Theoretical and experimental results are reviewed which show how the depolarization rates of absorbed D and T depend on first wall parameters such as the temperature, the bulk and surface diffusivities, the density of electronic states at the Fermi surface, the spectral density of microscopic fluctuating electric field gradients, and the concentration of paramagnetic impurities. Nuclear magnetic resonance (NMR) spectroscopy of hydrogenated and deuterated amorphous semiconductors suggests that low-Z nonmetallic materials may provide a satisfactory first wall or limiter coating under reactor conditions with characteristic depolarization times of several seconds. Experiments are proposed to test the consequences of our analysis. © 1984, American Vacuum Society. All rights reserved.

Full Text

Duke Authors

Cited Authors

  • Greenside, HS; Budny, RV; Post, DE

Published Date

  • January 1, 1984

Published In

Volume / Issue

  • 2 / 2

Start / End Page

  • 619 - 629

Electronic International Standard Serial Number (EISSN)

  • 1520-8559

International Standard Serial Number (ISSN)

  • 0734-2101

Digital Object Identifier (DOI)

  • 10.1116/1.572456

Citation Source

  • Scopus