Inelastic scattering of low-energy electrons by metastable atoms

Andreev, E.A.; Bodrov, A.E.

doi:10.1016/0009-2614(84)80342-5

Cited by 16 publications

(5 citation statements)

References 11 publications

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“…All of the above observations are consistent with the theoretical model (Andreev andBodrov 1984, Dandawate andRai 1984) requiring that the atomic-core total angular momentum cannot change if a transition is to occur. In this framework the observed increase in [ 3 P 0 ] at high T e (E) can then be attributed to intermultiplet transitions 3s → 3p with consequent return of the excited electron into the 3s shell.…”

supporting

confidence: 86%

Electron-impact-induced excitation transfer between 3s levels of the neon atom

Иванов¹

1998

J. Phys. B: At. Mol. Opt. Phys.

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A full set of rate constants for electron-impact-induced excitation transfer between 3 P 2 , 3 P 1 , 3 P 0 and 1 P 1 states of the Ne atom is obtained from optical absorption measurements in the afterglow He-Ne plasma with pulsed electron heating in the electron temperature range T e = 0.03-1.2 eV. The rate data are consistent with the model requiring that the atomic-core total angular momentum cannot change if a transition is to occur.

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supporting

confidence: 86%

Electron-impact-induced excitation transfer between 3s levels of the neon atom

Иванов¹

1998

J. Phys. B: At. Mol. Opt. Phys.

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“…It is quite difficult to find the solution of system (1). As a first step we can use the theoretical paper of Andreev and Bodrov (1984). According to their model for heavy rare-gas atoms, beginning with Ne, electron-impact-induced transitions with a change of the atomic-core total momentum are forbidden.…”

Section: No Ktcmentioning

confidence: 99%

Excitation transfer between the first neon triplet levels

Pilosof¹,

Blagoev²

1988

J. Phys. B: At. Mol. Opt. Phys.

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The temperature dependences of the rate coefficients for electron-impact-induced transitions between 33P2,,,, neon levels are determined. The rate coefficients for the transitions 3P,+-'Pi ( i , j = O , 1, 2; i + j ) are K,, = k , , exp(-lE,JkT,), where !ill = ~1.25=0.17)x10-'cm3s-', k Z , = ( 1 . 7 ~l . j ) x 1 0 -8 c m 3 s ~' and k , , , = ( 4 . 4 = 2 . 4 3 ~1 0 -~ cm3 s-' at electron temperatures in the range 400-4000 K.

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“…The electron density is in the range between 10 10 and 10 11 cm −3 under our conditions. The value of the rate constant k q is 2×10 −7 cm 3 s −1 and is independent of the electron temperature above 0.2 eV [55,56]. Thus, we obtain 50 µs < τ q < 500 µs.…”

Section: Discussion On Different Time Scales In the Afterglowmentioning

confidence: 53%

Determination of electron densities by diode-laser absorption spectroscopy in a pulsed ICP

Çelik

Aramaki

Luggenhölscher

et al. 2011

Plasma Sources Sci. Technol.

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A novel method to determine electron densities in a low pressure (1 Pa) pulsed ICP discharge via absorption spectroscopy on argon metastables is presented. By use of an external cavity diode laser tuned at a vacuum wavelength of 696.73 nm the time behaviour of the absorption from metastable argon atoms in the Ar1s 5 state in the afterglow is recorded. An analytical model motivates the assumption of a homogeneous metastable density distribution under our experimental conditions. Further, a detailed model for the metastable density decay is developed, including the spatial electron density distribution and its temporal decay. This allows determination of the electron density from the measured data. Comparison between densities obtained by this technique and by Langmuir probe measurements shows excellent agreement. Furthermore, the electron density decay time, the ambipolar diffusion constant and the effective electron temperature in the afterglow are determined comparing data and model. The scaling of the electron decay time with density indicates recombination. The obtained low electron temperature reduces diffusion very much and can be expected to cause an increased recombination rate.

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Inelastic scattering of low-energy electrons by metastable atoms

Cited by 16 publications

References 11 publications

Electron-impact-induced excitation transfer between 3s levels of the neon atom

Electron-impact-induced excitation transfer between 3s levels of the neon atom

Excitation transfer between the first neon triplet levels

Determination of electron densities by diode-laser absorption spectroscopy in a pulsed ICP

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