<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mo>(</mml:mo><mml:mi>e</mml:mi><mml:mo>,</mml:mo><mml:mn>2</mml:mn><mml:mi>e</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mo>(</mml:mo><mml:mi>e</mml:mi><mml:mo>,</mml:mo><mml:mn>3</mml:mn><mml:mo>−</mml:mo><mml:mn>1</mml:mn><mml:mi>e</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math>studies on double processes of He at large m

Watanabe, Noboru; Khajuria, Yugal; Takahashi, Masahiko; Udagawa, Yasuo; Vinitsky, P. S.; Popov, Yu. V.; Чулуунбаатар, О.; Kouzakov, Konstantin

doi:10.1103/physreva.72.032705

Cited by 40 publications

(27 citation statements)

References 59 publications

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“…In all these works as well as in further works by other groups [12][13][14][15], it was clearly demonstrated that (e,3-1e) experiments provide a very sensitive mean to identify the role of various mechanisms responsible for electron impact DI and to gauge their relative importance.…”

Section: Introductionmentioning

confidence: 88%

Experimental and theoretical confirmation of the role of higher order mechanisms in the electron impact double ionization of helium

Casagrande¹,

Li²,

Lahmam‐Bennani³

et al. 2011

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

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Our recent measurements (Lahmam-Bennani et al 2010 J. Phys. B: At. Mol. Opt. Phys. 43 105201) of the (e,3-1e) four-fold differential cross sections (4DCS) for double ionization (DI) of helium are extended here to a wider range of ejected electron energies and very asymmetric energy sharing. Previous observations of large angular shifts in the experimental 4DCS distributions with respect to the momentum transfer axis are once again reproduced by the new measured data. Moreover, a comparison of all the data sets with the kinematical analysis previously given and with two newly developed non-first-order theoretical models for DI-namely the two-step 2-Monte Carlo event generator (TS2-MCEG) and a second Born approximation (B2)-confirms our interpretation which allows the observed shifts and the existence of structures in the intensity distributions to be mostly related to the second order, TS2 DI mechanism, which is shown to predominate over the first-order 'shake-off' (SO) and 'two-step 1' (TS1) mechanisms under the present kinematics.

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Section: Introductionmentioning

confidence: 88%

Experimental and theoretical confirmation of the role of higher order mechanisms in the electron impact double ionization of helium

Casagrande¹,

Li²,

Lahmam‐Bennani³

et al. 2011

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

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“…Recently, Watanabe et al [5,6] have studied simultaneous excitation-ionization processes of He by electron momentum spectroscopy (EMS). It is a powerful tool for investigating the electronic structure of matter.…”

Section: Introductionmentioning

confidence: 99%

“…at high impact energies and high momentum transfers. In [5], Watanabe et al reported the (e,2e) and (e,3-1e) experiments at an impact energy of 2080 eV in the symmetric noncoplanar geometry i.e. two outgoing electrons have equal scattering polar angles (θ 1 = θ 2 =45 o ) and energies (E 1 =E 2 ).…”

Section: Introductionmentioning

confidence: 99%

“…In the present paper we have concentrated on the study of the role of projectile interaction in the simultaneous excitation-ionization process by analysing the measurements of Sakhelashvili et al [3] as well as those of Watanabe et al [5,6]. The effectiveness of different theoretical models are also assessed in reproducing the momentum profiles.…”

Section: Introductionmentioning

confidence: 99%

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The role of projectile interactions in triply differential cross sections for excitation–ionization of helium

Dey

Roy

2011

Nuclear Instruments and Methods in Physics Research Section B:

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We report triply differential cross section (TDCS) for the simultaneous excitation-ionization of helium by electron impact for both coplanar and non-coplanar geometry. In the coplanar case, calculations have been performed for an incident energy of 500 eV and low ejection energies (3 eV and 10 eV), whereas in the noncoplanar case we have considered impact energies in the range 1240-4260 eV for a symmetric geometry. The present calculation is based on the eikonal approximation due to Glauber. We have incorporated the effect of post collision interaction in the Glauber approximation. A comparison is made of the present calculations with the results of other theoretical methods and recent experiments. The Glauber results are in reasonably good agreement with the experiment for small scattering angles.

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“…Further information on EMS can be found in review papers [14][15][16] and in the book [17]. Later, even more sophisticated experiments of both kinds were performed for (e,3e) ionization [13,15,[18][19][20].…”

mentioning

confidence: 99%

Many particle spectroscopy of atoms, molecules, clusters and surfaces: international conference MPS-2016

et al. 2017

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Abstract. The conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (MPS-2016) brought together near to a hundred scientists in the field of electronic, photonic, atomic and molecular collisions, and spectroscopy from around the world. We deliver an Editorial of a topical issue presenting original research results from some of the participants on both experimental and theoretical studies involving many particle spectroscopy of atoms, molecules, clusters and surfaces.

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(e,2e)and(e,3−1e)studies on double processes of He at large m

Cited by 40 publications

References 59 publications

Experimental and theoretical confirmation of the role of higher order mechanisms in the electron impact double ionization of helium

Experimental and theoretical confirmation of the role of higher order mechanisms in the electron impact double ionization of helium

The role of projectile interactions in triply differential cross sections for excitation–ionization of helium

Many particle spectroscopy of atoms, molecules, clusters and surfaces: international conference MPS-2016

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