Experimental electronic stopping cross section of transition metals for light ions: Systematics around the stopping maximum

Moro, Marcos V.; Bauer, Péter; Primetzhofer, Daniel

doi:10.1103/physreva.102.022808

Cited by 26 publications

(28 citation statements)

References 67 publications

(80 reference statements)

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“…Our measurements of the stopping power of protons on Pt agree with recent Moro, Bauer, and Primetzhofer [60] measurements, which were at variance by about 20% with previous measurements and SRIM calculations. The theoretical model TCS-Penn agrees with our stopping measurements for energies lower than 80 keV (in agreement with Refs.…”

Section: Discussionsupporting

confidence: 90%

“…Both results for sample A and B are in good agreement with the most recent ones from Refs. [50,60] measured by time-of-flight MEIS and ICRU49 [53] values. However, they are about 20% larger than other previous experiments and SRIM [54,55] values.…”

Section: Resultsmentioning

confidence: 99%

“…[52]; M: Ref. [60]). The symbols correspond to the present stopping results obtained from full Monte Carlo (MC) simulations.…”

Section: Resultsmentioning

confidence: 99%

“…The theoretical model TCS-Penn agrees with our stopping measurements for energies lower than 80 keV (in agreement with Refs. [50,60]).…”

Section: Discussionmentioning

confidence: 99%

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Stopping and straggling of 60–250-keV backscattered protons on nanometric Pt films

et al. 2020

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The stopping power and straggling of backscattered protons on nanometric Pt films were measured at low to medium energies (60-250 keV) by using the medium-energy ion scattering technique. The stopping power results are in good agreement with the most recent measurements by Primetzhofer Phys. Rev. B 86, 094102 (2012) and are well described by the free electron gas model at low projectile energies. Nevertheless, the straggling results are strongly underestimated by well-established formulas up to a factor of two. Alternatively, we propose a model for the energy-loss straggling that takes into account the inhomogeneous electron-gas response, based on the electron-loss function of the material, along with bunching effects. This approach yields remarkable agreement with the experimental data, indicating that the observed enhancement in energy-loss straggling is due to bunching effects in an inhomogeneous electron system. Nonlinear effects are of minor importance for the energy-loss straggling.

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Section: Discussionsupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

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Stopping and straggling of 60–250-keV backscattered protons on nanometric Pt films

et al. 2020

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“…But in general, there is a rather good agreement with most of the experimental data in the whole energy range in our study. The behaviour around the stopping maximum is depicted in the insets of figure 2, where it can be seen that the agreement of our calculated stopping powers with the most recent experimental data [32][33][34][35][36][37][38][39][40][41][42] is particularly good. Stopping power of platinum (left panels) and gold (right panels) for protons (upper panels) and alpha particles (lower panels).…”

Section: Stopping Power Of Platinum and Gold For Protons And Alpha Pa...supporting

confidence: 79%

Calculated energy loss of swift light ions in platinum and gold: importance of the target electronic excitation spectrum

Abril¹,

Vera²,

García-Molina³

2021

Preprint

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Understanding and predicting the energy loss of swift ions in metals is important for many applications of charged particle beams, such as analysis and modification of materials, and recently for modelling metal nanoparticle radiosensitisation in ion beam cancer therapy. We have calculated the stopping power of the transition metals Pt and Au for protons and alpha particles in a wide energy range, using the dielectric formalism, which realistically accounts for the excitation spectrum of each metal through the Mermin Energy Loss Function -Generalised Oscillator Strength methodology. For each combination of projectile, energy and target, we have considered: (i) the equilibrium charge state of the projectile through the target, (ii) the energy-loss due to electron capture and loss processes, and (iii) the energy loss resulting from the polarisation of the projectile's electronic cloud due to the self-induced electric field. Our calculated stopping powers show a fairly good agreement with the available experimental data for platinum and gold, particularly the most recent ones around the stopping power maximum, which validates the methodology we have used to be further extended to other transition metals. For the materials studied (platinum and gold), two commonly used and different sources of the experimental excitation spectrum yield comparable calculated stopping powers and mean excitation energies, the latter being closer to the most recent data provided in a recent ICRU Report than to previous compilations. Despite the small differences in the sources of excitation spectra of these metals, they lead to practically the same stopping power results as far as they reproduce the main excitation features of the material and fulfil physically motivated sum rules.

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Infrared spectroscopic study on Nb-ion-irradiated MgB2 thin films

Tran,

Le,

Lee

et al. 2024

Current Applied Physics

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Experimental electronic stopping cross section of transition metals for light ions: Systematics around the stopping maximum

Cited by 26 publications

References 67 publications

Stopping and straggling of 60–250-keV backscattered protons on nanometric Pt films

Stopping and straggling of 60–250-keV backscattered protons on nanometric Pt films

Calculated energy loss of swift light ions in platinum and gold: importance of the target electronic excitation spectrum

Infrared spectroscopic study on Nb-ion-irradiated MgB2 thin films

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