Two Level Model of Hydrogen Diffusion in Nanoporous Solids with Strongly Bound Adsorption States

2015 ◽  
Vol 119 (13) ◽  
pp. 7234-7242
Author(s):  
Carlos Rodríguez-Castellanos ◽  
Javier Q. Toledo-Marín
Keyword(s):  
Hydrogen Diffusion ◽  
Level Model ◽  
Nanoporous Solids ◽  
Two Level Model

Hydrogen Migration In Phosphorous Doped Polycrystalline Silicon

1998 ◽  
Vol 513 ◽  
Author(s):  
N. H. Nickel ◽  
I. Kaiser
Keyword(s):  
Activation Energy ◽  
Polycrystalline Silicon ◽  
Hydrogen Diffusion ◽  
Chemical Potential ◽  
Effective Diffusion ◽  
High Hydrogen ◽  
Deep Traps ◽  
Level Model ◽  
Increasing Temperature ◽  
Two Level Model

ABSTRACTHydrogen diffusion in phosphorous doped polycrystalline silicon was investigated by deuterium diffusion experiments. The presence of phosphorous enhances hydrogen diffusion. For high hydrogen concentrations the activation energy of the effective diffusion-coefficient amounts to 0.25-0.35 eV. At low hydrogen concentrations diffusion is governed by deep traps that are present in an appreciable concentration of 6×108 - 1019 cm−3. The hydrogen chemical-potential, 9H, decreases with increasing temperature at a rate of ˜ 0.002 eV/K. The data are discussed in terms of a two-level model used to describe hydrogen diffusion in amorphous and undoped polycrystalline silicon.

Phase transitions in two-level model: Exact solution

1982 ◽  
Vol 44 (6) ◽  
pp. 805-808 ◽  
Author(s):  
A.N. Kocharian ◽  
N.Sh. Izmailian
Keyword(s):  
Exact Solution ◽  
Phase Transitions ◽  
Level Model ◽  
Two Level Model

scholarly journals Some Aspects of Cooperation Between Government Authorities and Specialized Municipalities in the Sphere of Land Use: Peculiarities and Ways to Solve Challenging Issues

2021 ◽  
Vol 1 ◽  
pp. 30-33
Author(s):  
Pavel N. Petryaev ◽  
Keyword(s):  
Land Use ◽  
General Theory ◽  
Public Administration ◽  
Regional Government ◽  
Legal Structures ◽  
Level Model ◽  
Administrative Units ◽  
Two Level Model ◽  
Federal Center

The features of interaction between state authorities and municipalities (a set of local self-government bodies) of closed administrative-territorial entities (ZATO) in the field of land use are considered. The article substantiates the opinion that this interaction is carried out to a large extent within the framework of a two-level model of legal relations “the federal center — the municipalities of the closed city”. In cases specified by legislation, this model includes another level of government — regional government bodies. Using the methods of dialectical cognition, as well as the general theory of constructing social and legal structures, the author substantiates and proposes a number of organizational and legal measures aimed at increasing the efficiency of interaction between public administration bodies and municipal authorities of closed administrative administrative units in the field of land use, as well as solving specific problematic issues arising in the process of this interaction.

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