Interaction potentials and energy transfer cross sections for collisions of metastable helium and neon. II. He(21S)+Ne

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

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Energy transfer as a function of collision energy. IV. State‐to‐state cross sections for rotational‐to‐translational energy transfer in HF+Ne, Ar, and Kr

The Journal of Chemical Physics ◽

10.1063/1.443062 ◽

1982 ◽

Vol 76 (2) ◽

pp. 913-930 ◽

Cited By ~ 49

Author(s):

J. A. Barnes ◽

M. Keil ◽

R. E. Kutina ◽

J. C. Polanyi

Keyword(s):

Energy Transfer ◽

Cross Sections ◽

Collision Energy ◽

Translational Energy

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Semiclassical calculation of energy transfer in polyatomic molecules. V. Differential cross sections for excitation of CO2 and N2O colliding with Li+ at E ≈ 4.72 eV

Chemical Physics ◽

10.1016/0301-0104(81)80117-6 ◽

1981 ◽

Vol 60 (2) ◽

pp. 199-213 ◽

Cited By ~ 8

Author(s):

Gert Due Billing

Keyword(s):

Energy Transfer ◽

Cross Sections ◽

Differential Cross ◽

Polyatomic Molecules ◽

Differential Cross Sections

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Determination method of the characteristic parameters of different interaction potentials from energy transfer measurements

Journal of Luminescence ◽

10.1016/0022-2313(84)90075-9 ◽

1984 ◽

Vol 31-32 ◽

pp. 609-611 ◽

Cited By ~ 1

Author(s):

Bernard Sipp ◽

René Voltz

Keyword(s):

Energy Transfer ◽

Determination Method ◽

Characteristic Parameters ◽

Interaction Potentials

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Interaction potentials and ultracold scattering cross sections for the Li+7–Li7 ion-atom system

Physical Review A ◽

10.1103/physreva.101.052702 ◽

2020 ◽

Vol 101 (5) ◽

Author(s):

A. Pandey ◽

M. Niranjan ◽

N. Joshi ◽

S. A. Rangwala ◽

R. Vexiau ◽

...

Keyword(s):

Cross Sections ◽

Interaction Potentials ◽

Scattering Cross ◽

Scattering Cross Sections ◽

Atom System

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Temperature dependence of cross sections for 72P1/2 ↔ 72P3/2 excitation transfer and for quenching in cesium, induced in collisions with H2, N2, CH4, and CD4

Canadian Journal of Physics ◽

10.1139/p82-029 ◽

1982 ◽

Vol 60 (2) ◽

pp. 239-244 ◽

Cited By ~ 7

Author(s):

I. N. Siara ◽

R. U. Dubois ◽

L. Krause

Keyword(s):

Energy Transfer ◽

Temperature Dependence ◽

Cross Sections ◽

Rotational Energy ◽

Excitation Transfer ◽

Sensitized Fluorescence ◽

Temperature Range ◽

Rotational Energy Transfer ◽

Order Of Magnitude

The temperature dependence of cross sections for 72P1/2 ↔ 72P3/2 excitation transfer in cesium, as well as the effective quenching of these states, induced in collisions with H2, N2, CH4, and CD4 molecules have been investigated in a series of sensitized fluorescence experiments over a temperature range 390–640 K. The 72P mixing cross sections are of the order of 10−15 cm2 and exceed by at least one order of magnitude similar cross sections for mixing by collisions with Ne, Ar, Kr, and Xe. The large sizes of the mixing cross sections and their variation with temperature are ascribed to a phenomenon of electronic-to-rotational energy transfer.

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