Experimental lifetimes of some excited states of XeII

Das, Mala

doi:10.1016/0022-4073(94)90039-6

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…To deduce the electron energy dependent excitation cross sections of a level from the observed emission intensity of a line issuing from this level, it is necessary to know the branching ratio, b l = A l τ m , of this line. While for analysis of the argon ion lines the b l values extracted from [29] could be used with a high degree of confidence, the available data for the Xe + ion showed large discrepancies both in radiative lifetimes [34,35] and in transition probabilities [36][37][38][39][40]. The difficulty came mostly from the fact that none of the sources appeared to be complete.…”

Section: Data For Branching Ratiosmentioning

confidence: 99%

Electron excitation coefficients and cross sections for excited levels of argon and xenon ions

Strinić¹,

Malović²,

Petrović³

et al. 2004

Plasma Sources Sci. Technol.

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In this paper, we present experimental results for the excitation coefficients of Ar + and Xe + ions to several excited states above their respective ground states. The data have been obtained from two different drift tubes and were analysed using Monte Carlo simulation, which involved an accurate representation of non-equilibrium effects and a complete set of initial cross sections. For some levels, it was possible to cover a sufficient range of E/N so that the electron energy dependent cross sections could be derived. For the remaining levels, normalization of the assumed shape of the cross sections could be performed by using excitation coefficients in a limited range of E/N. As expected, for all observed excited states, the cross section increases sharply from the threshold energy, reaches a maximum at about 40-50 eV and then decreases slowly for higher energies. The peak cross sections fall between 3 × 10 −22 and 15 × 10 −22 m 2 for argon and between 3 × 10 −22 and 21 × 10 −22 m 2 for xenon. The peak values of the cross sections are in reasonable agreement with the data previously obtained using the electron beam technique (binary collision), but the energy dependent profiles of the cross sections are significantly different. The absolute emission coefficients of three Xe 2+ lines, excited from the ground state xenon atom, have also been deduced. They are about one order of magnitude smaller than those of the stronger Xe + lines.

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Section: Data For Branching Ratiosmentioning

confidence: 99%

Electron excitation coefficients and cross sections for excited levels of argon and xenon ions

Strinić¹,

Malović²,

Petrović³

et al. 2004

Plasma Sources Sci. Technol.

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Experimental lifetimes of some levels of Ne ii

Das

1997

Z Phys D - Atoms, Molecules and Clusters

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The radiative lifetimes of some levels belonging to the 2p 4 3d and 2p 4 4s configurations of Ne ii have been measured using high frequency deflection technique with a delayed coincidence single-photon counting arrangement. The measurements have been performed under conditions where pressure dependent effect is negligible. The lifetimes of 3d 2 F 5/2 and 4s 4 P 3/2 levels have been measured for the first time. A comparison with other results is presented.

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Experimental lifetime of some level belonging to the 5p46d configuration of XeII

Das

Karmakar

2006

Eur. Phys. J. D

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Experimental lifetimes of some excited states of XeII

Cited by 3 publications

References 12 publications

Electron excitation coefficients and cross sections for excited levels of argon and xenon ions

Electron excitation coefficients and cross sections for excited levels of argon and xenon ions

Experimental lifetimes of some levels of Ne ii

Experimental lifetime of some level belonging to the 5p46d configuration of XeII

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