Investigation of double capture in Ne<sup>8+</sup>+He, H<sub>2</sub>, by electron spectroscopy at 80 keV. I. Theoretical considerations

Boudjema, M.; Cornille, M.; Dubau, J.; Moretto-Capelle, P; Bordenave-Montesquieu, A; Benoit‐Cattin, P.; Gleizes, Alain

doi:10.1088/0953-4075/24/7/022

Cited by 20 publications

(30 citation statements)

References 26 publications

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“…The undetected ion beam was collected at the Attached to the target gas cell is a glass ion gauge which allows the target pressure to be monitored before and after each run. Experimental results for the system Ne ++He have been obtained (Boudjetna et al [4]) at the collisional velocity of 0.40 a.u. They observed the projectile Auger electrons emitted at laboratory angles of 10', 90', and 160.…”

Section: Methodsmentioning

confidence: 99%

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Double electron capture inNe8+-He collisions at intermediate energies

et al. 1993

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High-resolution Auger spectra of doubly excited Be-like neon have been obtained for intermediate collisional velocities (0.89 -1.79 a.u. ). Ne was produced at high voltage in the Argonne National Laboratory electron-cyclotron-resonance ion source. A differentially pumped helium gas cell was used to study double electron capture. The LMX Auger decays of the Be-like neon are observed with a high-resolution 0' tandem electron spectrometer. High-angular-momentum states are observed to be populated during the collisions and their relative amplitudes change dramatically with increasing collisional velocity.PACS number(s): 34.50.Fa, 34.70.+ e, 32.80.Dz

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Section: Methodsmentioning

confidence: 99%

“…[2), Moretto-Cappelle et al [3], Boudjema et al. [4], Rocin, Barat, and Larent [5], and Barat and Rocin [6], and references therein). These previous experiments have involved projectiles with collisional velocities well below one atomic unit of velocity.…”

Section: Introductionmentioning

confidence: 99%

Double electron capture inNe8+-He collisions at intermediate energies

et al. 1993

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“…We use a scaling factor of 0.85. Our results obtained by the MZ and Cowan codes are compared in table 2 with results obtained by Vaeck and Hansen (1989), Bachau et al (1990), Chen and Lin (1989) and Boudjema et al (1991a). These data are listed in table 2 (a, b, c, d, e, f, respectively).…”

Section: Theoretical Methodsmentioning

confidence: 78%

“…Experimental data are given in the column Exp. a1, b1, this work; a2, b2, Bachau et al (1990); a3, b3, Boudjema et al (1991a).…”

Section: Auger Widths (E)mentioning

confidence: 86%

Electron spectra from singlet and triplet states of Ne^6+**produced by low energy Ne⁸⁺+ He, Ne and Ar collisions

Kitazawa

Ida

Matsui

et al. 2001

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

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Ejected electron spectra from the singlet and triplet states of doubly excited Ne 6+ * * (1s 2 2pnl), Ne 6+ * * (1s 2 3l3l) and Ne 6+ * * (1s 2 3l4l) ions, produced by 80 keV Ne 8+ (1s 2) + He, Ne and Ar collisions, have been measured by means of a zero-degree electron spectroscopy. Only singlet states were observed when the target was He. In contrast, the contribution from the triplet states prevailed in the spectra for the Ne target. For the Ar target, practically no signals were observed in the energy region for the 1s 2 3lnl states. Two theoretical methods, the perturbation theory (MZ code) and the multi-configurational Hartree-Fock (Cowan code) were used for identification of ejected-electron spectra. Using the (j) string analysis in the extended classical over-barrier model, we discuss the possibility of the participation of inner electrons in the process of doubleelectron capture by highly charged ion multi-electron target atoms.

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“…Electron spectroscopy has been used most often to investigate the collision dynamics and the decay of doubly excited states populated in two-electron transfer processes. An analysis of this collision system has been done by Boudjema et al,͓2,3͔ where also references to previous work can be found. Photon spectroscopy is not often used, since the doubly excited states populated in the double electron transfer processes mainly stabilize by Auger decay.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of single- and double-electron transfer in slowNe8++Hecollisions using photon and electron spectroscopy

Langereis

Nordgren

Bliman³

et al. 1999

Phys. Rev. A

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Single-and double-electron transfer from He to the Ne 8ϩ (1s 2 )S 0 1 ion has been studied at 80 keV by extreme ultraviolet ͑EUV͒ spectroscopy and zero-degree electron spectroscopy. Signals originating from the stabilization after two-electron capture are identified in the photon data. This gives information on the stabilization of two electrons on the projectile. Single-electron capture signals originating from nϭ9 states are observed, and the absolute emission cross section is determined. The presented experimental data have unprecedented resolution. The analysis is supported by extensive theoretical calculations of the ͑3,3͒, ͑3,4͒, and ͑4,4͒ doubly excited states in Be-like neon. Decay from triplet states due to spin exchange is observed in the spectra.

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Investigation of double capture in Ne⁸⁺+He, H₂, by electron spectroscopy at 80 keV. I. Theoretical considerations

Cited by 20 publications

References 26 publications

Double electron capture inNe8+-He collisions at intermediate energies

Double electron capture inNe8+-He collisions at intermediate energies

Electron spectra from singlet and triplet states of Ne^6+**produced by low energy Ne⁸⁺+ He, Ne and Ar collisions

Experimental study of single- and double-electron transfer in slowNe8++Hecollisions using photon and electron spectroscopy

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Investigation of double capture in Ne8++He, H2, by electron spectroscopy at 80 keV. I. Theoretical considerations

Cited by 20 publications

References 26 publications

Double electron capture inNe8+-He collisions at intermediate energies

Double electron capture inNe8+-He collisions at intermediate energies

Electron spectra from singlet and triplet states of Ne6+**produced by low energy Ne8++ He, Ne and Ar collisions

Experimental study of single- and double-electron transfer in slowNe8++Hecollisions using photon and electron spectroscopy

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Investigation of double capture in Ne⁸⁺+He, H₂, by electron spectroscopy at 80 keV. I. Theoretical considerations

Electron spectra from singlet and triplet states of Ne^6+**produced by low energy Ne⁸⁺+ He, Ne and Ar collisions