A nuclear physics method for the determination of hydrogen diffusion coefficients

Thermodynamics approach to the hydrogen diffusion and phase transformation in titanium particles

“…This is unlikely to in the experiments of Wasilewski and Kehl [13] and Philips et al [17]. Although the method used by Brauer et al [18] is unlikely to form those phases, the measured value of hydrogen diffusion coefficient is several orders of magnitude higher than those obtained from the volumetric measurement method and the nuclear physics method. Therefore, the experimental results of Papazoglou and Hepworth [14] have revealed the diffusion characteristics of a pure ␣-Ti system and Eq.…”

“…1. Hydrogen diffusion coefficients in ␣-Ti (the solid lines denote the experimental results reported by Wasilewski and Kehl [13], Papazoglou and Hepworth [14] and Philips et al [17], respectively, the dashed lines are the extrapolation of their experimental results and the filled square is the experimental result of Brauer et al [18]). …”

“…Brauer et al [18] studied the diffusion phenomenon of hydrogen in titanium and Ti alloys with a nuclear physics method based on the reaction of 15 N + 1 H → 12 C + 4 He + ␥ (4.43 MeV). The concentration of hydrogen was calculated from the number of ␥ rays and the diffusion coefficient was extracted from the hydrogen depth profile based on the principle of diffusion.…”

Kinetic Investigation of the Ti-H System by a Molten Salt Electrochemical Technique

“…9 They give the self-diffusion coefficient of hydrogen in metals, which corresponds to jump frequency of hydrogen atoms. The gas-volumetric method, 10-12 nuclear physics, 13,14 Gorsky effect measurement, 15,16 and the electrochemical method [17][18][19][20][21][22] give the chemical diffusion coefficient of hydrogen in metals, which is crucial when considering practical applications. …”

Physicochemical, Spectroscopic Properties, and Diffusion Mechanisms of Small Hydrocarbon Molecules in Mof-74-Mg/Zn: A Quantum Chemical Investigation

“…154 Experimental determination of the diffusion coefficient of hydrogen atoms, for instance, in metallic systems has resulted in undesirable discrepancies and scattered values over many orders of magnitude among results from different research groups. [155][156] The values of such essential quantities for many important systems such as MOFs are rarely reported in the literature.…”