Velocity dependence of the cross sections for Penning and associative ionization of H atoms by<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">He</mml:mi><mml:mo>(</mml:mo><mml:mn>2</mml:mn><mml:mn /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mo>)</mml:mo></mml:math>) metastable atoms

Fort, Joaquim; Laucagne, J.J.; Pesnelle, A.; Watel, G.

doi:10.1103/physreva.14.658

Cited by 26 publications

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“…De telles considerations doivent intervenir dans les etudes de relaxation de 1'energie cinetique des faisceaux de muons positifs. Il est possible toutefois que la formation de Hell + s'effectue par l'intermédiaire de la reaction Mu + He* --* He~u + + e -, puisque dans le cas du proton, la section efficace d'un tel processus est de l'ordre de 4 x 10-15 cm 2 [35]. La capture directe du muonium par 1'helium pour former MuHe est violemment interdite car cette molecule est similaire a HeH qui est instable.…”

Section: Le Coefficient D'einstein Correspondant Estunclassified

Calculs des niveaux d'énergie liés et quasi-liés des ions moléculaires muoniques Heμ+ et Neμ+

Fournier

Lassier‐Govers

1982

J. Phyique Lett.

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2014 A partir des courbes de potentiel des systèmes HeH+ et NeH+, on a calculé les niveaux d'énergie rovibrationnels des ions moléculaires mésiques correspondants (He03BC+ et Ne03BC+). On a aussi déterminé les énergies des états quasi-liés, la hauteur des barrières de potentiel correspondantes ainsi que les durées de vie de ces états vis-à-vis de la prédissociation. Les contributions des corrections diabatiques et adiabatiques à ces résultats sont discutées. Abstract 2014 Bound and quasi-bound states of mesic molecular ions have been calculated in the framework of the Born-Oppenheimer approximation. The energy levels, potential humps, and lifetimes with respect to predissociation of He03BC+ and Ne03BC+ quasi-bound states are determined. Diabatic and non adiabatic corrections are estimated and discussed.

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Section: Le Coefficient D'einstein Correspondant Estunclassified

Calculs des niveaux d'énergie liés et quasi-liés des ions moléculaires muoniques Heμ+ et Neμ+

Fournier

Lassier‐Govers

1982

J. Phyique Lett.

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“…However, in the present experiment a velocity selector is not employed; velocity dependence is investigated using the time-of -flight (TOF) method previously used in our experiments on Penning ionisation with metastable He* atoms (Pesnelle et a1 1975, Fort et al 1976, 1978a. The TOF spectra for associative He: ions and metastable He(23S) are shown in figure 1.…”

Section: L193 L194mentioning

confidence: 99%

Design of a CO₂gasdynamic laser with selective thermal excitation and an unstable resonator

Kuzmin¹,

Лавров²,

Чернышева³

1989

Sov. J. Quantum Electron.

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Ionization of hydrogen and deuterium atoms in thermal energy collisions with state-selected Ne(3s 3 P 2,3 P 0) metastable atoms

et al. 1983

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High resolution energy spectra of electrons and ions resulting from thermal energy collisions of hydrogen and deuterium atoms with state-selected metastable Ne(3s3P2, 3P0) atoms are reported. The electron spectra for Ne(3P2)+H(D) are very broad: The high energy part due to formation of Nell § (NeD +) bound states (associative ionization), amounts to about 30 % of the ionizing events, whereas the dominant part of the spectrum including a prominent low-energy peak is due to Penning ionization out of a strongly-attractive entrance potential curve. Comparison of the spectra with quantum mechanical fit calculations yields fairly accurate information on this potential, in particular its well depth De[Ne(3p2)-H,D]=2.0(1)eV. The spectra for Ne(3Po)+H,D are comparatively narrow with much lower cross sections than the one for the Ne(3P2) state. The corresponding entrance channel is a weakly bound van der Waals molecule with a well depth below 0.1eV. A perturbation calculation of the Ne(3s)+H(ls) potential energy curves at large distances explains the observed difference between the Ne(3P2)+ H(D) and Ne(3P0)+H(D) systems. Symmetry arguments are given that the major contribution to the Ne(3P2)+H(D) spectra is due to the 22; potential.

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Velocity dependence of the cross sections for Penning and associative ionization of H atoms byHe(2S1)) metastable atoms

Cited by 26 publications

References 14 publications

Calculs des niveaux d'énergie liés et quasi-liés des ions moléculaires muoniques Heμ+ et Neμ+

Calculs des niveaux d'énergie liés et quasi-liés des ions moléculaires muoniques Heμ+ et Neμ+

Design of a CO₂gasdynamic laser with selective thermal excitation and an unstable resonator

Ionization of hydrogen and deuterium atoms in thermal energy collisions with state-selected Ne(3s 3 P 2,3 P 0) metastable atoms

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Velocity dependence of the cross sections for Penning and associative ionization of H atoms byHe(2S1)) metastable atoms

Cited by 26 publications

References 14 publications

Calculs des niveaux d'énergie liés et quasi-liés des ions moléculaires muoniques Heμ+ et Neμ+

Calculs des niveaux d'énergie liés et quasi-liés des ions moléculaires muoniques Heμ+ et Neμ+

Design of a CO2gasdynamic laser with selective thermal excitation and an unstable resonator

Ionization of hydrogen and deuterium atoms in thermal energy collisions with state-selected Ne(3s 3 P 2,3 P 0) metastable atoms

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Design of a CO₂gasdynamic laser with selective thermal excitation and an unstable resonator