Ion-driven permeation of deuterium through tungsten under simultaneous helium and deuterium irradiation

Deuterium permeation in tungsten by mixed ion irradiation

“…In contrast, it is likely that the lag times corresponding to Arrhenius fit W1-25/50 m is a measure of diffusion through bulk tungsten (and bulk traps) since it results in effective From Ref. [19]. diffusivities similar to those obtained by Zakharov et al [32] under gas driven permeation.…”

“…A microwave plasma discharge was extracted at voltage, E, and focused onto a tungsten specimen held in a permeation setup. The setup [19] consists of a specimen holder that allows separation of the irradiation and permeation chambers. A high resolution quadrupole mass spectrometer was used to monitor the mass 3 (HD or H 3 ) and mass 4 (D 2 ) signals on the permeation side.…”

“…(4) and (5), respectively, using both Frauenfelder's (F-based) and Zakharov's (Z-based) From Ref. [19]. diffusivity data.…”

“…We have also performed experiments with pure D irradiation for comparative data as well as to determine microstructure dependence [18]. However, our main focus has been permeation experiments under mixed ion irradiation with He [19] or C [20] impurities. The parameters varied were the incident ion flux, ion energy, temperature, impurity percentage, and microstructure.…”

Helium mobility in advanced nuclear ceramics

“…• [253,256,259], and Fe and ferritic-martensitic steels [257,260,262]. For this area, nuclear reaction analysis reveals itself to be a very powerful tool because specific reactions exist for almost every isotope 2 H(D), 3 H(T) and 3 He namely: (1) D(d, p0) 3 He or D( 3 He, p0) 4 He, (2) T(d, n) 4 He, and (3) 3 He(d, p0) 4 He.…”