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Title: Direct depth distribution measurement of deuterium in bulk tungsten exposed to high-flux plasma

Abstract

Understanding tritium retention and permeation in plasma-facing components is critical for fusion safety and fuel cycle control. Glow discharge optical emission spectroscopy (GD-OES) is shown to be an effective tool to reveal the depth profile of deuterium in tungsten. Results confirm the detection of deuterium. Furthermore, a ~46 µm depth profile revealed that the deuterium content decreased precipitously in the first 7 µm, and detectable amounts were observed to depths in excess of 20 µm. The large probing depth of GD-OES (up to 100s of µm) enables studies not previously accessible to the more conventional techniques for investigating deuterium retention. Of particular applicability is the use of GD-OES to measure the depth profile for experiments where high diffusion is expected: deuterium retention in neutron irradiated materials, and ultra-high deuterium fluences in burning plasma environment.

Authors:
ORCiD logo [1];  [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
OSTI Identifier:
1372955
Alternate Identifier(s):
OSTI ID: 1360916; OSTI ID: 1421267
Report Number(s):
INL/JOU-17-41539
Journal ID: ISSN 2158-3226
Grant/Contract Number:  
AC07-05ID14517
Resource Type:
Journal Article: Published Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; depth profile; deuterium; glow discharge optical emission spectroscopy; tungsten

Citation Formats

Taylor, Chase N., and Shimada, M. Direct depth distribution measurement of deuterium in bulk tungsten exposed to high-flux plasma. United States: N. p., 2017. Web. doi:10.1063/1.4983384.
Taylor, Chase N., & Shimada, M. Direct depth distribution measurement of deuterium in bulk tungsten exposed to high-flux plasma. United States. doi:10.1063/1.4983384.
Taylor, Chase N., and Shimada, M. Mon . "Direct depth distribution measurement of deuterium in bulk tungsten exposed to high-flux plasma". United States. doi:10.1063/1.4983384.
@article{osti_1372955,
title = {Direct depth distribution measurement of deuterium in bulk tungsten exposed to high-flux plasma},
author = {Taylor, Chase N. and Shimada, M.},
abstractNote = {Understanding tritium retention and permeation in plasma-facing components is critical for fusion safety and fuel cycle control. Glow discharge optical emission spectroscopy (GD-OES) is shown to be an effective tool to reveal the depth profile of deuterium in tungsten. Results confirm the detection of deuterium. Furthermore, a ~46 µm depth profile revealed that the deuterium content decreased precipitously in the first 7 µm, and detectable amounts were observed to depths in excess of 20 µm. The large probing depth of GD-OES (up to 100s of µm) enables studies not previously accessible to the more conventional techniques for investigating deuterium retention. Of particular applicability is the use of GD-OES to measure the depth profile for experiments where high diffusion is expected: deuterium retention in neutron irradiated materials, and ultra-high deuterium fluences in burning plasma environment.},
doi = {10.1063/1.4983384},
journal = {AIP Advances},
number = 5,
volume = 7,
place = {United States},
year = {Mon May 08 00:00:00 EDT 2017},
month = {Mon May 08 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1063/1.4983384

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