Intermediate-energy electron-impact ionization of molecules

Monzani, A. L.; Machado, L. E.; Lee, M.-T.; Machado, A. M.

doi:10.1103/physreva.60.r21

Cited by 23 publications

(12 citation statements)

References 35 publications

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“…The inability of the theory to account for the recoil scattering is most likely related to the use of plane waves in the incident and fast outgoing channels. Calculations, such as those for ionization of H 2 [9], which use distorted waves in all channels are likely to model the recoil scattering more successfully. In Ref.…”

Section: Fig 2 (A)mentioning

confidence: 99%

Dynamics in electron-impact ionization ofH2O

et al. 2004

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We present multiply differential cross sections for electron-impact ionization of the water molecule. The experimental results are compared with theoretical cross sections calculated using a recently developed distorted-wave Born approach for molecules. The experimental cross sections exhibit a very large recoil scattering, which is not predicted by the theory. This has implications for applications of this theoretical approach in areas such as modeling of ionization in biological systems.

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Section: Fig 2 (A)mentioning

confidence: 99%

Dynamics in electron-impact ionization ofH2O

et al. 2004

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“…In the first Born approximation (FBA), the ejected electron is treated as a Coulomb wave whereas the incident and scattered electrons are treated as plane waves. In 2001, Champion et al [142] used the FBA to study electronimpact ionization of H 2 O. Monzani et al [188] reported a DWBA approach for H 2 in which all incoming and outgoing continuum electrons are represented as distorted-waves calculated in a single-center static-exchange potential. Weck et al [141,150] developed the first Born approximation twocenter continuum (FBA-TCC) approximation with correct boundary conditions in the entrance and exit channels.…”

Section: Introductionmentioning

confidence: 99%

The Distorted-Wave Born Approach for Calculating Electron-Impact Ionization of Molecules

Madison

Al-Hagan

2010

Journal of Atomic, Molecular, and Optical Physics

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The distorted-wave Born approximation (DWBA) has been one of the most successful theoretical approaches for treating electron collisions with complicated atoms, and recently the DWBA has been successfully extended to treat electron-impact ionization of molecules. The purpose of this paper is to give an overview of that development and to provide a summary of the recent experimental and theoretical works examining low to intermediate energy electron-impact single ionization of molecules.

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“…A large body of theoretical and experimental works have been reported for EMS studies of molecular targets, see, e.g. [2,4] and references therein, whereas studies concerned with the dynamics of the ionization process of molecules are less numerous [5][6][7][8][9][10][11][12], mainly due to the difficulty in developing a realistic theoretical model to describe this process. However, there has recently been a renewed interest in such dynamics studies, both experimentally [13,14] and theoretically [15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Triply differential (e,2e) cross sections for ionization of the nitrogen molecule at large energy transfer

Naja¹,

Staicu-Casagrande²,

Lahmam‐Bennani³

et al. 2007

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

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Measurements of the (e,2e) triply differential cross sections (TDCS) are presented for the ionization of the nitrogen molecule in coplanar asymmetric geometry at an incident energy of about 600 eV and a large energy transfer to the target. The experimental results are compared with state-of-the-art available theoretical models for treating differential electron impact ionization of molecules. The experimental TDCS are characterized by a shift towards larger angles of the angular distribution with respect to the momentum transfer direction, and by a large intensity in the recoil region, especially for ionization of the 'inner' 2σ g molecular orbital. Such shifts and intensity enhancement are not predicted by the model calculations which rather yield a TDCS symmetrically distributed around the momentum transfer direction.

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Intermediate-energy electron-impact ionization of molecules

Cited by 23 publications

References 35 publications

Dynamics in electron-impact ionization ofH2O

Dynamics in electron-impact ionization ofH2O

The Distorted-Wave Born Approach for Calculating Electron-Impact Ionization of Molecules

Triply differential (e,2e) cross sections for ionization of the nitrogen molecule at large energy transfer

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