Multiple Trapping Sites for Hydrogen Atoms in Rare Gas Matrices

1960 ◽  
Vol 32 (4) ◽  
pp. 963-971 ◽  
Author(s):  
S. N. Foner ◽  
E. L. Cochran ◽  
V. A. Bowers ◽  
C. K. Jen
Keyword(s):  
Rare Gas ◽  
Hydrogen Atoms ◽  
Multiple Trapping ◽  
Trapping Sites

Multiple Trapping Sites for Hydrogen Atoms in Solid Argon

1959 ◽  
Vol 2 (2) ◽  
pp. 43-45 ◽  
Author(s):  
E. L. Cochran ◽  
V. A. Bowers ◽  
S. N. Foner ◽  
C. K. Jen
Keyword(s):  
Hydrogen Atoms ◽  
Multiple Trapping ◽  
Solid Argon ◽  
Trapping Sites

Production of Metastable Hydrogen Atoms in Proton—Rare-Gas Collisions

1965 ◽  
Vol 137 (2A) ◽  
pp. A340-A346 ◽  
Author(s):  
D. Jaecks ◽  
B. Van Zyl ◽  
R. Geballe
Keyword(s):  
Rare Gas ◽  
Hydrogen Atoms

Hydrogen Dynamics and Tee Distribution of H Sites in Undoped a-Si:H and a-Ge:H

1991 ◽  
Vol 219 ◽  
Author(s):  
R. Shinar ◽  
X.-L. Wu ◽  
S. Mitra ◽  
J. Shinar
Keyword(s):  
Mass Spectrometry ◽  
Activation Energy ◽  
Long Range ◽  
Secondary Ion Mass Spectrometry ◽  
Ir Studies ◽  
Multiple Trapping ◽  
Ion Mass Spectrometry ◽  
Secondary Ion ◽  
Trapping Sites

ABSTRACTSecondary ion mass spectrometry and IR studies of long-range hydrogen motion in undoped a-Si:H and a-Ge:H of varying H content and microstructure are reviewed and discussed. In particular, their relation to the multiple trapping (MT) model, the role of microvoids, the significance of the Meyer-Neldel relation (MNR), and the nature of H sites is addressed. It is suggested that while the MT mechanism may be significant in a-Si:H of low H content Cfj, it is largely marginal in films where CH ≥ 10 at.% H and in a-Ge:H. Mono Si-H bonds on microvoid surfaces are apparently deep H trapping sites up to ∼ 400°C, but H is desorbed from such sites in a-Ge:H above 180°C. The MNR between the diffusional activation energy and prefactor is observed among the various a-Si:H and a-Ge:H, but its significance is questionable, and may be due to the MT mechanism only in low H content a-Si:H. The nature of the distribution of H sites is also discussed.

Comparison of Hydrogen Thermal Desorption Analysis Curves of Electron-Irradiated F82H and Creep-Ruptured Pure Fe Obtained by Experiments and Simulations

2021 ◽  
Vol 1024 ◽  
pp. 135-144
Author(s):  
Takuya Kamimura ◽  
Hayato Yamashita ◽  
Koichi Sato ◽  
Tsunakazu Ohyama ◽  
Yoshinori Kimoto ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Thermal Desorption ◽  
Rate Theory ◽  
Hydrogen Atoms ◽  
Positron Annihilation Lifetime ◽  
Solute Atoms ◽  
Simulation Results ◽  
Diffusion Of Hydrogen ◽  
Trapping Sites ◽  
Thermal Desorption Analysis

Herein, we compared thermal desorption analysis (TDA) curves obtained by conducting experiments and simulations. In addition, we discussed the validation of our simulations and trapping sites of hydrogen atoms. In as-received F82H, when the samples contained solute atoms, grain boundaries, dislocations, and precipitates, the experimental curve corresponded to the simulated curve. In positron annihilation lifetime (PAL) measurements, di-vacancies were detected in the electron-irradiated F82H. When we changed the growth and the concentration of vacancy-type defects during temperature increase using the rate theory, the simulation results agreed with experiment results. In creep-ruptured Fe, only dislocations were detected by the PAL measurements. However, the existence of a type of defect, which was related to grain boundaries, must be assumed to fit the simulation curve to the experimental one. In the next step, the diffusion of hydrogen atoms on grain boundaries should be added to simulation program.

scholarly journals Direct observation of individual hydrogen atoms at trapping sites in a ferritic steel

Science ◽  
2017 ◽  
Vol 355 (6330) ◽  
pp. 1196-1199 ◽  
Author(s):  
Y.-S. Chen ◽  
D. Haley ◽  
S. S. A. Gerstl ◽  
A. J. London ◽  
F. Sweeney ◽  
...  
Keyword(s):  
Direct Observation ◽  
Ferritic Steel ◽  
Hydrogen Atoms ◽  
Trapping Sites

Simple DFT model of clusters embedded in rare gas matrix: Trapping sites and spectroscopic properties of Na embedded in Ar

2004 ◽  
Vol 121 (17) ◽  
pp. 8466 ◽  
Author(s):  
B. Gervais ◽  
E. Giglio ◽  
E. Jacquet ◽  
A. Ipatov ◽  
P.-G. Reinhard ◽  
...  
Keyword(s):  
Spectroscopic Properties ◽  
Rare Gas ◽  
Dft Model ◽  
Trapping Sites
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