Wszystkie pola: 82.65.+r - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Chemisorption Isotherms for Ising Anderson Hamiltonian
Autorzy:: Taranko, E.
Cardenas, R.
Taranko, R.
Fedyanin, V. K.
Powiązania:: https://bibliotekanauki.pl/articles/1931807.pdf
Data publikacji:: 1994-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.45.-v
82.65.My
Opis:: The adsorption isotherms for Ising-Anderson type model Hamiltonian describing the chemisorbed system was calculated. The submonolayer coverage of the substrate surface was considered on the equal footing together with the electronic characteristics of the chemisorbed adatoms in a self-consisting manner. The resulting adsorption isotherms depend in explicit way on the electronic parameters describing the chemisorbed adatoms and substrate metal.
Źródło:: Acta Physica Polonica A; 1994, 86, 6; 917-927
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Chemisorption Theory at Submonolayer Coverages: Influence of the Dynamic Hopping on the Electronic Characteristics
Autorzy:: Cardenas, R.
Taranko, E.
Taranko, R.
Fedyanin, V.
Powiązania:: https://bibliotekanauki.pl/articles/1891892.pdf
Data publikacji:: 1991-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.20.-r
82.65.My
Opis:: The influence of the dynamic hopping term included in the Newns-Anderson Hamiltonian on the electronic structure of the chemisorbed layer at different coverages rates is investigated. It is shown that this additional interaction can destroy the initial symmetry of the Newns-Anderson model or restore this symmetry in the initial negative asymmetric case. The coverage dependence of the adatom electron charge is also studied for the case of hydrogen chemisorption on a model transition metal surface.
Źródło:: Acta Physica Polonica A; 1991, 80, 5; 731-743
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Interaction of Hydrogen with Vanadium Layers Preadsorbed on Tungsten Field Emitter Tip
Autorzy:: Błaszczyszyn, R.
Wachowicz, E.
Błaszczyszynowa, M.
Powiązania:: https://bibliotekanauki.pl/articles/1968928.pdf
Data publikacji:: 1998-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 79.70.+q
82.65.My
Opis:: Interaction of hydrogen with vanadium layers preadsorbed on a thermally cleaned tungsten field emitter was studied at room temperature and 78 K through measurements of the total work function changes. An increase in the work function followed by its slight decrease at higher exposure can be understood taking into account the possibility of negatively (β$\text{}^{-}$) and positively (β$\text{}^{+}$) polarized adspecies formation on thin vanadium layer. This process leads to vanadium hydride formation. The work function results suggest that hydrogen diffusion into the vanadium layer is meaningful at room temperature. Thermal desorption of hydrogen adsorbate carried out within the temperature range 409-461 K from thin vanadium layer (Θ$\text{}_{V}$ = 40) provided a value of 127 ± 6 kJ/mol for the activation energy for desorption.
Źródło:: Acta Physica Polonica A; 1998, 93, 5-6; 763-773
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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