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Stopping power

About: Stopping power is a research topic. Over the lifetime, 82 publications have been published within this topic receiving 931 citations.


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Journal ArticleDOI
TL;DR: In this paper, in situ resistance and Hall mobility measurements were used to evaluate the damage creation rate from elastic collisions in a heavy ion accelerator for irradiation of germanium and gallium arsenide.
Abstract: The advantages of using a high energy (several GeV) heavy ion accelerator for irradiation are first recalled: the ranges of ions in materials are significant; an a priori relative evaluation of the damage creation rates from elastic collisions is possible; last, the ratio of the electronic stopping power to the nuclear stopping power is very large. The experimental methods used are in situ resistance and Hall mobility measurements. The irradiated samples are also analyzed in the laboratory by means of different methods (DLTS, photoluminescence, electron microscopy). The resistance has the same behaviour in silicon and gallium arsenide. It increases continuously during the irradiation. On the other hand, in n-type germanium, the resistance first increases, passes through a maximum, and decreases afterwards. A type-conversion takes place in the material. Moreover, the comparison of damage creation rates from one irradiation to another, in germanium and gallium arsenide, seems to show that the electron excitation produces a relative decrease of the damage creation rate. This effect is not visible in silicon.

103 citations

Journal ArticleDOI
01 Feb 1987-EPL
TL;DR: In this article, the effects of heavy ion irradiation in the GeV range are investigated by magnetic measurements and transmission electronic microscopy (TEM) images of latent tracks of yttrium-iron garnets.
Abstract: Heavy-ion irradiation in the GeV range is an excellent way to investigate electronic stopping power effects in solids up to a few keV/A Effects of 18 GeV Ar, 29 GeV Kr and 30 GeV Xe irradiations of yttrium-iron garnets have been investigated by magnetic measurements and transmission electronic microscopy (TEM) The dominant effect of electronic losses is demonstrated For the first time, TEM images of latent tracks are presented

51 citations

Journal ArticleDOI
TL;DR: In this paper, the authors compared laser-driven d(d, n)-3He beam-target fusion neutron production from bulk deuterated plastic (CD) targets with a pitcher-catcher target scheme using an identical laser and detector arrangement.
Abstract: Laser-driven d(d, n)-3He beam-target fusion neutron production from bulk deuterated plastic (CD) targets is compared with a pitcher-catcher target scheme using an identical laser and detector arrangement. For laser intensities in the range of (1–3) × 1019 W cm−2, it was found that the bulk targets produced a high yield (5 × 104 neutrons per steradian) beamed preferentially in the laser propagation direction. Numerical modeling shows the importance of considering the temperature adjusted stopping powers to correctly model the neutron production. The bulk CD targets have a high background target temperature leading to a reduced stopping power for the deuterons, which increases the probability of generating neutrons by fusion. Neutron production from the pitcher-catcher targets was not as efficient since it does not benefit from the reduced stopping power in the cold catcher target. Also, the inhibition of the deuteron acceleration by a proton rich contamination layer significantly reduces the pitcher-catche...

51 citations

Journal ArticleDOI
01 Mar 1999-EPL
TL;DR: In this paper, it was shown that the damage efficiency and the track radii are all the higher as the irradiation temperature is high, which is in agreement with the thermal spike model: the energy deposited by a given ion on the target electrons is independent of the target temperature.
Abstract: Bismuth has been irradiated with swift xenon and tantalum ions at several temperatures between 20 K and 300 K, in the electronic stopping power regime. From in situ electrical resistivity measurements as a function of the ion fluence, damage efficiency and track radii have been deduced. It is shown in this paper that the damage efficiency and the track radii are all the higher as the irradiation temperature is high. This fact is in agreement with the thermal spike model: the energy deposited by a given ion on the target electrons is independent of the target temperature, but the energy necessary to melt a material depends on its initial temperature especially in the case of low melting point materials. The thermal spike is shown to be able to describe quantitatively the evolution of the track radii as a function of the irradiation temperature. The values used for the electronic thermal diffusivity (38 cm2 s−1 at 300 K) and for the electron-phonon coupling (1.3·1011 W cm−3 s−1) are in agreement with the semi-metallic characteristic of bismuth, i.e. its small number of electrons participating in the energy transport.

46 citations

Journal ArticleDOI
TL;DR: In this paper, a thermal spike model was used to analyze anomalous track formation in SiO2 α-quartz according to a temperature spike model, and the efficiency of energy deposition was g = 0.36 for low velocity ion bombardment in excellent agreement with that in yttrium iron garnet and lithium niobate.
Abstract: Amorphous track formation is analyzed in SiO2 α-quartz according to a thermal spike model. As predicted by the model, for tracks with Re > 4.5 nmRe2 ∼ Se (Re — the effective track radius, Se — the electronic stopping power) fulfils for α-SiO2. The efficiency of energy deposition is g = 0.36 for low velocity ion bombardment in excellent agreement with that in yttrium iron garnet and lithium niobate. The high efficiency is the consequence of the effect of the ion velocity on the damage cross section. Tracks with Re < 4.5 nm exhibit an ambiguity that can be resolved only by new experiments. The consequences of the variation of the spatial width of the electron energy distribution with the ion velocity are discussed.

41 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202366
2022117
20219
20201
20182
20171