THERMAL DESORPTION MEASUREMENTS OF HYDROGEN-ISOTOPE RETENTION IN THE ALCATOR-A TOKAMAK.

A. M. Razdow, E. S. Marmar, S. A. Cohen, H. F. Dylla

Research output: Contribution to journalConference article

Abstract

Results are given for deuterium retention measurements in type 304 stainless steel exposed in the edge plasma of the Alcator-A tokamak. Stainless steel samples, at 300 K, with surface conditions characterized by Auger electron spectroscopy, were introduced into the limiter shadow region for exposure to deuterium plasmas, and then withdrawn into an appended UHV chamber for thermal desorption measurements. For unoxidized samples exposed at the vacuum vessel wall radius, 1 multiplied by 10**1**5 D cm** minus **2 was retained after exposure to high density discharges. Exposure to consecutive series of N discharges produced retention proportional to N** one-half .

Original languageEnglish (US)
Pages (from-to)306-309
Number of pages4
JournalJournal of vacuum science & technology
Volume17
Issue number1
DOIs
StatePublished - Jan 1 1979
EventProc of the Natl Symp of the Am Vac Soc, 26th - New York, NY, USA
Duration: Oct 1 1979Oct 5 1979

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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