Collision Spectroscopy. I. Analysis of the Scattering of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">He</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>by Ne and Ar

Smith, Felix T.; Marchi, R. P.; Aberth, W.; Lorents, D. C.; Heinz, O.

doi:10.1103/physrev.161.31

Cited by 128 publications

(11 citation statements)

References 16 publications

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“…12, 13, and 20, plotted accordingly to this scaling procedure. We also show the same quantities as calculated by Smith et al 13 …”

Section: Numerical Results-comparison With Experimental Test Cassupporting

confidence: 71%

“…Using Eq. (10) to represent the interaction between a point positive charge and an atom (or spherically-symmetric approximation to a molecule) and applying Poisson's equation to this potential, we find the charge distribution to be (13) whereA=2N/H, B=2N(1-H-1 ), C=(H+1)/d, D=1/d, and l5(r) is the Dirac delta function which represents the point charge of the nucleus.…”

Section: B Interaction Potentialmentioning

confidence: 99%

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Phenomenological treatments of cross sections for proton and hydrogen impact below 1 keV on molecular nitrogen

Porter

Szydlik

Green

1975

The Journal of Chemical Physics

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An analytic independent-particle model is used to construct static potentials to describe the interaction of hydrogenlike ions with atoms and molecules. Parameters of the ion-atom potential are determined from ab initio total energy minimization procedure. The elastic scattering of He+ from Ne and Ar is investigated as a test case and comparison is made with experiment. The model is then used in conjunction with low energy H+ -N, experimental data to construct differential and total cross sections for the scattering of protons and hydrogen in the energy range 10 eY to I keY from molecular nitrogen. Analytic forms are used to parametrize these cross sections to facilitate their use in the calculation of energy deposition by protons and hydrogen atoms in atmospheric gases.

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“…12, 13, and 20, plotted accordingly to this scaling procedure. We also show the same quantities as calculated by Smith et al 13 …”

Section: Numerical Results-comparison With Experimental Test Cassupporting

confidence: 71%

Section: B Interaction Potentialmentioning

confidence: 99%

Phenomenological treatments of cross sections for proton and hydrogen impact below 1 keV on molecular nitrogen

Porter

Szydlik

Green

1975

The Journal of Chemical Physics

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“…This procedure yields relative numbers for ai()~) which still depend on the detection efficiency Sp whose energy dependence is not well known. In order to normalize cross sections obtained at different energies we make use of the fact that for small values of the reduced angle ~=ZEcM the reduced cross section p,=o-t(Z)-g.sinz is dominated by elastic scattering and therefore should only depend on z according to the scaling principle of Smith et al [17]. We norma- A comparison with their data in form of a plot p(z) versus z is not useful since at near-threshold energies p is certainly not only depending on v.…”

Section: Resultsmentioning

confidence: 99%

Application of atom-photon coincidence techniques to the determination of the differential cross section for excitation ofK(42 P) in low-energy K-N2, CO collisions

et al. 1979

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The differential cross section for the process K(42S)+N2, CO~K(42p)+N2, CO is presented for reduced scattering angles z<2-104eV deg. The inelastic process is identified by determining the time-correlation between the inelastically scattered potassium atom and the emitted K(42p--,42S)photon. The performance of different coincidence techniques is compared. From the differential cross sections values for the position of the curve crossing responsible for the excitation process are derived (Rc=2.77 , 2.48]~ and V(Rc)=0.55, 1.00eV for K-N 2, CO respectively). The values indicate that the lowest ionic intermediate state of the form K +-NJ, CO-is responsible for the excitation process.

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“…The transformation of this laboratory differential cross section O-LA B to the center of mass system is straightforward. A reduced differential cross section [9], p= OcM sin OCMO-CM , obtained in this way is shown in Fig. 9.…”

Section: Methodsmentioning

confidence: 99%

Photon ? ion angular correlations for He+ + He and He+ + Ne collisions

Großer

Neitzke

1982

Z Physik A

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Detailed information about scattering amplitudes of inelastic atomic collision processes is obtained by simultaneous detection of a scattered particle and a photon emitted from a scattered particle. Channels of neighbouring excitation energy, which are difficult to distinguish by optical or energy loss spectroscopy, are demonstrated to be separable making use of a difference in radiative lifetimes and of the resulting different response to an external magnetic field. The results are discussed in the framework of a quasimolecular description of the collision pair. For the He++ He system, a complete picture of the process is obtained by modifying models discussed previously. Qualitative conclusions are drawn for the He + + Ne system.

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Collision Spectroscopy. I. Analysis of the Scattering ofHe+by Ne and Ar

Cited by 128 publications

References 16 publications

Phenomenological treatments of cross sections for proton and hydrogen impact below 1 keV on molecular nitrogen

Phenomenological treatments of cross sections for proton and hydrogen impact below 1 keV on molecular nitrogen

Application of atom-photon coincidence techniques to the determination of the differential cross section for excitation ofK(42 P) in low-energy K-N2, CO collisions

Photon ? ion angular correlations for He+ + He and He+ + Ne collisions

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