Binary stopping theory for swift heavy ions

Sigmund, Peter; Schinner, Andreas

doi:10.1007/s100530070004

Cited by 110 publications

(74 citation statements)

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“…The fitting models of Ziegler et al and Paul and Schinner give an understandably good match, whilst the Binary Theory of Sigmund and Schinner [44,45] performs similarly well over the full projectile energy range from 1 keV/amu to 100 MeV/amu. The UCA (Unitary Convolution Approximation, see page 21) of Grande and Schiwietz [49] performs well at higher energies, but significantly underestimates the stopping power for projectile energies below 1 MeV/amu.…”

Section: Empirical Models Of Electronic Stopping Powermentioning

confidence: 77%

The treatment of electronic excitations in atomistic models of radiation damage in metals

Race¹,

Mason²,

Finnis³

et al. 2010

Rep. Prog. Phys.

135

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Abstract. Atomistic simulations are a primary means of understanding the damage done to metallic materials by high energy particulate radiation. In many situations the electrons in a target material are known to exert a strong influence on the rate and type of damage. The dynamic exchange of energy between electrons and ions can act to damp the ionic motion, to inhibit the production of defects or to quench in damage, depending on the situation. Finding ways to incorporate these electronic effects into atomistic simulations of radiation damage is a topic of current major interest, driven by materials science challenges in diverse areas such as energy production and device manufacture.In this review, we discuss the range of approaches that have been used to tackle these challenges. We compare augmented classical models of various kinds and consider recent work applying semi-classical techniques to allow the explicit incorporation of quantum mechanical electrons within atomistic simulations of radiation damage. We also outline the body of theoretical work on stopping power and electron-phonon coupling used to inform efforts to incorporate electronic effects in atomistic simulations and to evaluate their performance.

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Section: Empirical Models Of Electronic Stopping Powermentioning

confidence: 77%

The treatment of electronic excitations in atomistic models of radiation damage in metals

Race¹,

Mason²,

Finnis³

et al. 2010

Rep. Prog. Phys.

135

View full text Add to dashboard Cite

show abstract

“…This formula reproduces first-order Born results for all impact parameters for bare and also for screened projectiles (in the PCA mode) and contains some higher-order terms, reproducing the Bloch formula [17] at high velocities (in the UCA mode). The UCA model can also be seen as the impact-parameter realization of the Bloch formula and resembles the Binary model of Sigmund and Schinner [18].…”

Section: A Determination Of Shape Parametersmentioning

confidence: 99%

An analytical energy-loss line shape for high depth resolution in ion-beam analysis

Grande

Hentz

Pezzi

et al. 2007

Nuclear Instruments and Methods in Physics Research Section B:

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The knowledge of the energy-loss distribution in a single ion-atom collision is a prerequisite for subnanometric resolution in depth-profiling techniques such as Nuclear Reaction Analysis (NRA) and Medium Energy Ion-Scattering (MEIS). The usual Gaussian approximation specified by the stopping power and energy straggling is not valid for near surface regions of solids, where subnanometric or monolayer resolution can be achieved. In this work we propose an analytical formula for the line shape to replace the usual Gaussian distribution widely used in low-resolution ion-beam analysis. Furthermore, we provide a simple physical method to derive the corresponding shape parameters. We also present a comparison with full coupled-channel calculations as well as with experimental data at nearly single collision conditions.

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“…Apart from a few exceptions [11][12][13][14][15][16] most of the theoretical work published after the paper of Lindhard [10] has treated the Barkas effect as a consequence of close collisions [17][18][19][20][21][22][23][24][25][26][27][28]. The Barkas effect at close collision not only affects the stopping power but also manifests itself in other physical areas, but the corresponding interconnections are less known.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Barkas effect with keV-electron scattering

Grande

Vos

2013

Phys. Rev. A

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The energy loss of fast ions at close collision is mainly due to electron-ion collisions. The electrons are approximately stationary and they collide with a fast-moving ion. Here we study the same collision experimentally, in a reference system where the ions (or atoms) are stationary and interacting with keV electrons. Scattering cross sections under these conditions deviate from Rutherford, and we link these deviations, at higher energies, to the Z 3 contributions to the electronic stopping and the related Barkas effect and, at lower energies, also to quantum interference. The present measurements are well described by partial-wave calculations of the elastic cross section of electrons scattering from atoms. Encouraged by this agreement we use these calculations to estimate the Barkas factor for all elements and many energies. A universal curve for the Barkas factor due to close collisions is obtained for neutral projectiles and similar curves with smaller magnitude are found for ions.

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Binary stopping theory for swift heavy ions

Abstract: Equations (29-33) in appendix A should readThe main text as well as reported results are unaffected.

Cited by 110 publications

References 0 publications

The treatment of electronic excitations in atomistic models of radiation damage in metals

The treatment of electronic excitations in atomistic models of radiation damage in metals

An analytical energy-loss line shape for high depth resolution in ion-beam analysis

Exploring the Barkas effect with keV-electron scattering

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