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

Madison, Don H.; Al-Hagan, Ola

doi:10.1155/2010/367180

Cited by 92 publications

(81 citation statements)

References 186 publications

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“…This is in contrast to the much simpler atomic cases where atoms have only a single scattering centre and spherically symmetric wave functions. 19 While to the best of our knowledge the present study represents the first dynamical (e, 2e) investigation of pyrimidine, the bound electronic structure has previously been probed by electron momentum spectroscopy (EMS). Ning et al have reported EMS measurements of the complete valence region of pyrimidine at incident electron energies of 600 eV and 1500 eV, and compared their measured results with HartreeFock and density functional theory (DFT) calculations.…”

Section: Pyrimidine (C 4 H 4 N 2 )mentioning

confidence: 98%

Experimental and theoretical investigation of the triple differential cross section for electron impact ionization of pyrimidine molecules

Builth-Williams

Bellm

Jones

et al. 2012

The Journal of Chemical Physics

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Cross-section data for electron impact induced ionization of bio-molecules are important for modelling the deposition of energy within a biological medium and for gaining knowledge of electron driven processes at the molecular level. Triply differential cross sections have been measured for the electron impact ionization of the outer valence 7b2 and 10a1 orbitals of pyrimidine, using the (e, 2e) technique. The measurements have been performed with coplanar asymmetric kinematics, at an incident electron energy of 250 eV and ejected electron energy of 20 eV, for scattered electron angles of −5°, −10°, and −15°. The ejected electron angular range encompasses both the binary and recoil peaks in the triple differential cross section. Corresponding theoretical calculations have been performed using the molecular 3-body distorted wave model and are in reasonably good agreement with the present experiment.

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Section: Pyrimidine (C 4 H 4 N 2 )mentioning

confidence: 98%

Experimental and theoretical investigation of the triple differential cross section for electron impact ionization of pyrimidine molecules

Builth-Williams

Bellm

Jones

et al. 2012

The Journal of Chemical Physics

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“…Additional details can be found in Madison and Al-Hagan. 44 Results are presented for the M3DW described above, as well as the standard distorted wave Born approximation J. Chem. Phys.…”

Section: B Triple Differential Cross Sectionsmentioning

confidence: 99%

Dynamical (e,2e) studies of tetrahydrofurfuryl alcohol

Bellm

Builth-Williams

Jones

et al. 2012

The Journal of Chemical Physics

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Cross section data for electron scattering from DNA are important for modelling radiation damage in biological systems. Triply differential cross sections for the electron impact ionization of the highest occupied outer valence orbital of tetrahydrofurfuryl alcohol, which can be considered as an analogue to the deoxyribose backbone molecule in DNA, have been measured using the (e,2e) technique. The measurements have been performed with coplanar asymmetric kinematics at an incident electron energy of 250 eV, an ejected electron energy of 20 eV, and at scattered electron angles of −5 • , −10 • , and −15 • . Experimental results are compared with corresponding theoretical calculations performed using the molecular 3-body distorted wave model. Some important differences are observed between the experiment and calculations.

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“…Al-Hagan et al [11] showed that the molecular three-body distorted wave approximation (M3DW) coupled with an orientation-averaged molecular orbital approximation [15] yielded a good agreement with experimental TDCS data for H2. The molecular 3-body distorted wave (M3DW) approximation has been presented elsewhere [16][17] so only a brief description of the theory will be presented.…”

Section: Theorymentioning

confidence: 96%

Interference effects for intermediate energy electron-impact ionization of H₂and N₂molecules

Ozer

Chaluvadi

Madison

et al. 2015

J. Phys.: Conf. Ser.

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Abstract. We have studied electron impact ionization of H2 and N2 molecules at intermediate energies to look for possible two center interference effects experimentally and theoretically. Here we report a study of the interference factor I for 250 eV electron-impact ionization. The experimental measurements are performed using a crossed-beam-type electron-electron coincidence spectrometer and theoretical calculations are obtained using the Molecular Three Body Distorted Wave Approximation (M3DW). We found that the I-factor demonstrated strong evidence for two-center interference effects for both H2 and N2. We also found that the I-factor is more sensitive to projectile angular scans than to ejected electron energy scans which indicate that for the present set of kinematics the diffraction of the projectile from two scattering centers is more important than interference between electron waves emitted from two different centers.

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

Cited by 92 publications

References 186 publications

Experimental and theoretical investigation of the triple differential cross section for electron impact ionization of pyrimidine molecules

Experimental and theoretical investigation of the triple differential cross section for electron impact ionization of pyrimidine molecules

Dynamical (e,2e) studies of tetrahydrofurfuryl alcohol

Interference effects for intermediate energy electron-impact ionization of H₂and N₂molecules

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

Cited by 92 publications

References 186 publications

Experimental and theoretical investigation of the triple differential cross section for electron impact ionization of pyrimidine molecules

Experimental and theoretical investigation of the triple differential cross section for electron impact ionization of pyrimidine molecules

Dynamical (e,2e) studies of tetrahydrofurfuryl alcohol

Interference effects for intermediate energy electron-impact ionization of H2and N2molecules

Contact Info

Product

Resources

About

Interference effects for intermediate energy electron-impact ionization of H₂and N₂molecules