Published July 2015 | Version v1
Journal article Metadata-only

Characterization of PdCu as permeation probe membrane for atomic hydrogen

Creators

  • 1. Kyoto University, Graduate School of Engineering, Kyoyo (Japan)
  • 2. Kyushu University, Kasuga, Fukuoka (Japan)

Description

In a spherical tokamak QUEST, an atomic hydrogen probe system using palladium-copper (PdCu) membrane has been installed. In order to evaluate the basic performance of permeation probe, the recombination coefficients and the diffusion coefficients of deuterium in PdCu was investigated using nuclear reaction analysis (NRA) and permeation techniques. The diffusion coefficient D was determined as 2.9x10-4exp(-0.035eV/kT) cm2/s. The recombination coefficient on the plasma facing side Ku was expressed as 1.87x10-18exp(-0.44eV/kT) cm4/s. The recombination coefficient on the vacuum side Kd was consistent with Ku below 483 K while it was expressed as 4.16x10-23exp(-0.0063eV/kT) cm4/s above that temperature. (author)

Additional details

Publishing Information

Journal Title
Annual Report of Quantum Science and Engineering Center
Journal Volume
17
Journal Page Range
p. 54-56
ISSN
1345-0700

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
54103575
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
BOLTZMANN STATISTICS; COPPER; DEUTERIUM; DIFFUSION; FIRST WALL; HYDROGEN; MEMBRANES; NUCLEAR REACTION ANALYSIS; PALLADIUM; RECOMBINATION; TEMPERATURE DEPENDENCE; TOKAMAK DEVICES
Descriptors DEC
CHEMICAL ANALYSIS; CLOSED PLASMA DEVICES; ELEMENTS; HYDROGEN ISOTOPES; ISOTOPES; LIGHT NUCLEI; METALS; NONDESTRUCTIVE ANALYSIS; NONMETALS; NUCLEI; ODD-ODD NUCLEI; PLATINUM METALS; STABLE ISOTOPES; THERMONUCLEAR DEVICES; THERMONUCLEAR REACTOR WALLS; TRANSITION ELEMENTS

Optional Information

Notes
2 refs., 5 figs.