ChemInform Abstract: VARIATIONAL CALCULATION OF ATOMS AND MOLECULES BY A MODIFIED HASSE METHOD USING HULTHEN FUNCTIONS PART 3, LONG-RANGE INTERACTIONS BETWEEN HYDROGEN ATOM AND PROTON AND BETWEEN TWO HYDROGEN ATOMS

1973 ◽  
Vol 4 (44) ◽  
pp. no-no
Author(s):  
TOKIO YAMABE ◽  
SHINGO ISHIMARU ◽  
KENICHI FUKUI
Keyword(s):  
Hydrogen Atom ◽  
Long Range ◽  
Variational Calculation ◽  
Hydrogen Atoms ◽  
Atoms And Molecules ◽  
Long Range Interactions

60Co γ-RADIOLYSIS OF HYDROGEN HALIDES AT 77 °K

1966 ◽  
Vol 44 (2) ◽  
pp. 191-197
Author(s):  
R. C. Rumfeldt ◽  
D. A. Armstrong
Keyword(s):  
Liquid Phase ◽  
Hydrogen Atom ◽  
Experimental Error ◽  
Dose Dependence ◽  
Solid Matrix ◽  
Reactive Intermediate ◽  
Hydrogen Atoms ◽  
Hydrogen Halides ◽  
Atoms And Molecules ◽  
The Difference

Yields of hydrogen formed in the 60Co γ-radiolyses of pure polycrystalline samples of HBr and HCl at 77 °K decrease with increasing dose in the range 0 to 1 × 1018 eV per g. The true initial yields are G(H2)solidHClat77°K = 6.3 ± 0.2 and G(H2)solidHBrat77°K = 12.3 ± 0.3. Within experimental error these are the same as the respective liquid-phase yields at −79 °C. For doses in excess of 2 × 1018 eV per g the dose dependence is no longer significant and the yields tend toward plateau values of 3.2 ± 0.1 and 10.3 ± 0.1 for HCl and HBr respectively. The dose dependence of the hydrogen yields is attributed to the scavenging of a reactive intermediate by the halogen atoms and molecules which accumulate in the solid matrix as the dose increases.In independent experiments with an apparatus of the Klein–Scheer type it was shown that hydrogen atoms react readily with films of HBr at 77 °K. There is, however, no evidence of a significant reaction with HCl at this temperature. The difference in behavior of the two hydrogen halides may be explained by their different activation energies for reaction with hydrogen atoms. The results of the γ-radiolyses are discussed in the light of these experiments and it is suggested that the dose dependence may be a result of the scavenging of an ionic intermediate rather than a thermal hydrogen atom.

scholarly journals DISPERSION INTERACTION OF ATOMS WITH SINGLE-WALLED CARBON NANOTUBES DESCRIBED BY THE DIRAC MODEL

2011 ◽  
Vol 03 ◽  
pp. 555-563 ◽  
Author(s):  
YU. V. CHURKIN ◽  
A. B. FEDORTSOV ◽  
G. L. KLIMCHITSKAYA ◽  
V. A. YUROVA
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Atom ◽  
Interaction Energy ◽  
Hydrogen Molecule ◽  
Single Walled Carbon Nanotubes ◽  
Hydrogen Atoms ◽  
Single Walled Carbon ◽  
Atoms And Molecules ◽  
Proximity Force Approximation ◽  
Walled Carbon Nanotubes

We calculate the interaction energy and force between atoms and molecules and single-walled carbon nanotubes described by the Dirac model of graphene. For this purpose the Lifshitz-type formulas adapted for the case of cylindrical geometry with the help of the proximity force approximation are used. The results obtained are compared with those derived from the hydrodymanic model of graphene. Numerical computations are performed for hydrogen atoms and molecules. It is shown that the Dirac model leads to larger values of the van der Waals force than the hydrodynamic model. For a hydrogen molecule the interaction energy and force computed using both models are larger than for a hydrogen atom.

scholarly journals On the Long-range Interactions between Two Hydrogen Atoms and Two Helium Atoms

1972 ◽  
Vol 45 (5) ◽  
pp. 1384-1387 ◽  
Author(s):  
Tokio Yamabe ◽  
Shingo Ishimaru ◽  
Kenichi Fukui
Keyword(s):  
Long Range ◽  
Hydrogen Atoms ◽  
Helium Atoms ◽  
Long Range Interactions

Long-range interactions between atoms and molecules

1967 ◽  
Vol 1 (2) ◽  
pp. 161-167 ◽  
Author(s):  
A. Dalgarno ◽  
I. H. Morrison ◽  
R. M. Pengelly
Keyword(s):  
Long Range ◽  
Atoms And Molecules ◽  
Long Range Interactions

scholarly journals Long-range interactions of hydrogen atoms in excited states. II. Hyperfine-resolved (2S−2S) systems

2017 ◽  
Vol 95 (2) ◽  
Author(s):  
U. D. Jentschura ◽  
V. Debierre ◽  
C. M. Adhikari ◽  
A. Matveev ◽  
N. Kolachevsky
Keyword(s):  
Excited States ◽  
Long Range ◽  
Hydrogen Atoms ◽  
Long Range Interactions
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