Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Joseph A. Kunc"'
Publikováno v:
Advances in Space Research. 34:2159-2166
The Astronautics Program ( http://astronautics.usc.edu ) of the University of Southern California (USC) offers a full set of undergraduate and graduate degree programs in Aerospace Engineering with emphasis in Astronautics. The Bachelor of Science an
Autor:
Daniel A. Erwin, Joseph A. Kunc
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 36:4605-4615
The formalisms of the classical binary encounter approximation and Sommerfeld's quantization of electronic atomic orbits are used to derive reliable cross sections for direct ionization of heavy () rare gas atoms (argon, krypton, xenon, and radon) by
Publikováno v:
The Journal of Chemical Physics. 118:3141-3147
We present a two-channel model of the vibrational relaxation (VR) of H2 molecule, ν=1, j=0→ν=0, j=0, in collisions with a He atom over a broad energy range, bridging the gap between the Landau–Teller and Bethe–Wigner limits. The model is base
Autor:
Joseph A. Kunc
Publikováno v:
Molecular Physics. 101:413-420
Partition functions for both the rotational modes (hindered internal rotation and overall rotation) of the hydrogen peroxide (H2O2) molecule in the ground electronic state are studied using quantum and classical Gibbsian statistical mechanics. The pa
Autor:
Joseph A. Kunc, M Gryzinski
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 33:1549-1561
Two general and exact (within the formalism of the binary-encounter approximation) doubly differential cross sections for three-dimensional scattering of an incident electron from electrons of a target atom (molecule) are derived from first principle
Autor:
Joseph A. Kunc, Michał Gryziński
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 32:5789-5804
General analytical cross sections are derived from first principles, using the classical binary encounter approximation, for electron-impact double ionization of atoms with atomic number Z20 and s or d outer shells with two electrons. The cross secti
Autor:
Joseph A. Kunc
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 32:607-619
Scattering of low-energy electrons on atoms in a field of two different model potentials is investigated using effective range theory. A general formulation of the problem is such that it yields the scattering differential, momentum-transfer and tota
Publikováno v:
Journal of Applied Physics. 84:4693-4703
The impact of rotational–vibrational dynamics of molecules on the molecular partition functions, law of mass action and thermodynamic functions of partially dissociated diatomic gases is discussed. A group of 11 gases, expected to have their partit
Autor:
Joseph A. Kunc
Publikováno v:
Physical Review E. 58:4960-4966
General analytical expressions for the transport collision integrals ${\ensuremath{\Omega}}^{(l,s)}(T)$ for binary collisions of atoms that can interact through many different (repulsive-attractive as well as repulsive) potentials are derived. The in
Publikováno v:
Journal of Applied Physics. 83:3499-3508
The partition functions are calculated for gases consisting of Ln and F atoms, Ln+ ions, LnF and F2 molecules, and LnF+ molecular ions (Ln≡Dy, Ho, Tm) and are subsequently used in determining the local thermal equilibrium compositions of such gases