Electron and positron elastic scattering in gaseous and liquid water: A comparative study

Aouchiche, H.; Champion, C.; Oubaziz, D.

doi:10.1016/j.radphyschem.2007.09.004

Cited by 44 publications

(34 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the absence of elastic scattering data in liquid water, it is not possible to fully validate such elastic cross sections for the liquid phase. The influence of the water phase at low impact energy is, however, expected to be small …”

Section: Geant4‐dna Physics Constructorsmentioning

confidence: 99%

Geant4‐DNA example applications for track structure simulations in liquid water: A report from the Geant4‐DNA Project

et al. 2018

View full text Add to dashboard Cite

This Special Report presents a description of Geant4-DNA user applications dedicated to the simulation of track structures (TS) in liquid water and associated physical quantities (e.g., range, stopping power, mean free path…). These example applications are included in the Geant4 Monte Carlo toolkit and are available in open access. Each application is described and comparisons to recent international recommendations are shown (e.g., ICRU, MIRD), when available. The influence of physics models available in Geant4-DNA for the simulation of electron interactions in liquid water is discussed. Thanks to these applications, the authors show that the most recent sets of physics models available in Geant4-DNA (the so-called "option4" and "option 6" sets) enable more accurate simulation of stopping powers, dose point kernels, and W-values in liquid water, than the default set of models ("option 2") initially provided in Geant4-DNA. They also serve as reference applications for Geant4-DNA users interested in TS simulations.

show abstract

Section: Geant4‐dna Physics Constructorsmentioning

confidence: 99%

Geant4‐DNA example applications for track structure simulations in liquid water: A report from the Geant4‐DNA Project

et al. 2018

View full text Add to dashboard Cite

show abstract

“…To avoid the difficulties in solving the three-dimensional potential, the conventional DW methods [7,29,[32][33][34][35][36]46] employ the spherical averaging approximation to reduce the anisotropic potential to the r-dependent-only scalar or isotropic potential, as…”

Section: B Multicenter Distorted Wave [8]mentioning

confidence: 99%

“…It is worth mentioning that Champion and co-workers [29,46] and Madison and co-workers [7,[32][33][34][35][36] have developed atomiclike distorted-wave methods for molecular system; both groups employed the spherically averaged isotropic potentials to describe the distorted waves of the free electrons, while the latter authors also tried the spherically averaged molecular wave function. These methods have successfully described the dynamics of the ionization process for some cases.…”

Section: Introductionmentioning

confidence: 99%

Multicenter distorted-wave method for fast-electron-impact single ionization of molecules

Zhang

Wang

et al. 2014

Phys. Rev. A

View full text Add to dashboard Cite

A multicenter distorted-wave (MCDW) method for fast-electron-impact single ionization of a molecular system in the coplanar-asymmetric kinematics is developed. Plane waves are used to describe the fast incoming and outgoing electrons and the multicenter nature of the molecule is considered by describing the slow ejected electron with the multicenter distorted wave, which is solved from the anisotropic multicenter potential between the ejected electron and the ionic molecule. The MCDW method improves the conventional molecular distorted-wave methods, whose distorted wave is solved from the spherically averaged isotropic potential. The application to the water molecule shows reasonable agreement with the available experimental data.

show abstract

“…Of relevance are the distorted-wave impulse approximation (DWIA), 1,24,25 the distorted-wave Born approximation (DWBA), 26,27 or the Brauner-Briggs-Klar theory (BBK), [28][29][30] to name just a few. Due to the multi-centre nature of the scattered waves, the problem becomes particularly cumbersome when considering distorted wave effects in EMS experiments on molecular targets, and much effort has been made to account for these effects using (atomic-like) onecentered orbital depictions, [31][32][33][34][35][36][37][38] or, very recently, the more sophisticated and more reliable multicenter distorted-wave (MCDW) approach. 39 Accounting for distorted waves in theoretical studies of EMS experiments remains nevertheless computationally extremely expensive and still mainly intractable in the case of large molecular targets.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of molecular vibrations in electron momentum spectroscopy experiments on furan: An analytical versus a molecular dynamical approach

Morini

Deleuze

Watanabe

et al. 2015

The Journal of Chemical Physics

View full text Add to dashboard Cite

The influence of thermally induced nuclear dynamics (molecular vibrations) in the initial electronic ground state on the valence orbital momentum profiles of furan has been theoretically investigated using two different approaches. The first of these approaches employs the principles of Born-Oppenheimer molecular dynamics, whereas the so-called harmonic analytical quantum mechanical approach resorts to an analytical decomposition of contributions arising from quantized harmonic vibrational eigenstates. In spite of their intrinsic differences, the two approaches enable consistent insights into the electron momentum distributions inferred from new measurements employing electron momentum spectroscopy and an electron impact energy of 1.2 keV. Both approaches point out in particular an appreciable influence of a few specific molecular vibrations of A1 symmetry on the 9a1 momentum profile, which can be unravelled from considerations on the symmetry characteristics of orbitals and their energy spacing.

show abstract

Electron and positron elastic scattering in gaseous and liquid water: A comparative study

Cited by 44 publications

References 63 publications

Geant4‐DNA example applications for track structure simulations in liquid water: A report from the Geant4‐DNA Project

Geant4‐DNA example applications for track structure simulations in liquid water: A report from the Geant4‐DNA Project

Multicenter distorted-wave method for fast-electron-impact single ionization of molecules

Theoretical study of molecular vibrations in electron momentum spectroscopy experiments on furan: An analytical versus a molecular dynamical approach

Contact Info

Product

Resources

About