Inelastic Collisions of Fast Charged Particles with Atoms and Molecules—The Bethe Theory Revisited

Inokuti, Mitio

doi:10.1103/revmodphys.43.297

Cited by 2,335 publications

(966 citation statements)

References 297 publications

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“…63 (1975)]. Valuable information is given in earlier work [2,3,6,10] The first part of this article deals with the computational procedures. The second part contains numerical results.…”

Section: Introductionmentioning

confidence: 99%

Computation of microdosimetric distributions for small sites

Chmelevsky

Kellerer

1977

Radiat Environ Biophys

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Summary.Object of this study is the computation of microdosimetric functions for sites which are too small to permit experimental determination of the distributions by Rossi-counters. The calculations are performed on simulated tracks generated by Monte-Carlo techniques.The first part of the article deals with the computational procedure. The second part presents numerical results for protons of energies 0.5, 5, 20 MeV and for site diameters of 5, 10, 100 nm.

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“…63 (1975)]. Valuable information is given in earlier work [2,3,6,10] The first part of this article deals with the computational procedures. The second part contains numerical results.…”

Section: Introductionmentioning

confidence: 99%

Computation of microdosimetric distributions for small sites

Chmelevsky

Kellerer

1977

Radiat Environ Biophys

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“…Understanding and describing at the finest scale the ionizing processes induced by charged particles on biomolecular targets like water vapour and DNA nucleobases (Adenine, Cytosine, Guanine and Thymine) are of prime importance in many fields including radiobiology, radiotherapy and medical imaging [1][2][3]. Consequently, it remains today crucial to access to differential and total cross sections to develop accurate numerical simulations of charged particle transport in biological matter.…”

Section: Introductionmentioning

confidence: 99%

Total cross sections for ionizing processes induced by proton impact on molecules of biological interest: A classical trajectory Monte Carlo approach

Lekadir

Abbas

Champion

et al. 2009

Nuclear Instruments and Methods in Physics Research Section B:

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In the current work, we present a study of ionizing interactions between protons and molecular targets of biological interest like water vapour and DNA bases. Total cross sections for single and multiple ionizing processes are calculated in the Independent Electron Model and compared to existing theoretical and experimental results for impact energies ranging from 10keV/amu to 10MeV/amu. The theoretical approach combines some characteristics of the Classical Trajectory Monte Carlo method with the Classical Over-Barrier framework. In this "mixed" approach, all the particles are described in a classical way by assuming that the target electrons are involved in the collision only when their binding energy is greater than the maximum of the potential energy of the system {projectile-target}. We test our theoretical approach on the water molecule and the obtained results are compared to a large set of data and a reasonable agreement is generally observed specially for impact energies greater than 100keV, excepted for the double ionization process for which large discrepancies are reported. Considering the DNA bases, the obtained results are given without any comparison since the literature is till now very poor in terms of cross section measurements.

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“…Qualitatively the dipole approximation is valid when qa ≪ 1, where a ∼ 1/ζ is the mean radius of the core state, ζ being the effective core charge. In the dipole limit the inelastic scattering cross section is proportional to the x-ray absorption coefficient [3,4,5], and the directionq of the momentum transfer vector plays the role of the XAS polarization vectorε. Thus the anisotropy of the x-ray edge can be studied by varyingq in much the same way it is studied in XAS by varying the direction ofε.…”

Section: Introductionmentioning

confidence: 99%

Inelastic scattering from core electrons: A multiple scattering approach

2005

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The real-space multiple-scattering (RSMS) approach is applied to model non-resonant inelastic scattering from deep core electron levels over a broad energy spectrum. This approach is applicable to aperiodic or periodic systems alike and incorporates ab initio, self-consistent electronic structure and final state effects. The approach generalizes to finite momentum transfer a method used extensively to model x-ray absorption spectra (XAS), and includes both near edge spectra and extended fine structure. The calculations can be used to analyze experimental results of inelastic scattering from core-electrons using either x-ray photons (NRIXS) or electrons (EELS). In the low momentum transfer region (the dipole limit), these inelastic loss spectra are proportional to those from XAS. Thus their analysis can provide similar information about the electronic and structural properties of a system. Results for finite momentum transfer yield additional information concerning monopole, quadrupole, and higher couplings. Our results are compared both with experiment and with other theoretical calculations.

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Inelastic Collisions of Fast Charged Particles with Atoms and Molecules—The Bethe Theory Revisited

Cited by 2,335 publications

References 297 publications

Computation of microdosimetric distributions for small sites

Computation of microdosimetric distributions for small sites

Total cross sections for ionizing processes induced by proton impact on molecules of biological interest: A classical trajectory Monte Carlo approach

Inelastic scattering from core electrons: A multiple scattering approach

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