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Free electron model
About: Free electron model is a research topic. Over the lifetime, 4678 publications have been published within this topic receiving 103535 citations.
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TL;DR: In this paper, the ECR technique has been employed to follow the interaction in the gas phase of free electrons with the triatomic molecules ClO2 and Cl2O in the temperature range 296-443 K.
24 citations
TL;DR: Using the molecule glycine, it is shown that the dynamics of a hole, arising from ionisation in the inner valence region, evolves with a timescale appropriate to be measured using X-ray pulses from the current generation of SASE free electron lasers.
Abstract: Ultrafast hole dynamics created in molecular systems as a result of sudden ionisation is the focus of much attention in the field of attosecond science. Using the molecule glycine we show through ab initio simulations that the dynamics of a hole, arising from ionisation in the inner valence region, evolves with a timescale appropriate to be measured using X-ray pulses from the current generation of SASE free electron lasers. The examined pump-probe scheme uses X-rays with photon energy below the K edge of carbon (275-280 eV) that will ionise from the inner valence region. A second probe X-ray at the same energy can excite an electron from the core to fill the vacancy in the inner-valence region. The dynamics of the inner valence hole can be tracked by measuring the Auger electrons produced by the subsequent refilling of the core hole as a function of pump-probe delay. We consider the feasibility of the experiment and include numerical simulation to support this analysis. We discuss the potential for all X-ray pump-X-ray probe Auger spectroscopy measurements for tracking hole migration.
24 citations
TL;DR: In this article, the electronic structure of noble or transition metal based alloys with transitional impurities was calculated using an hybridized tight binding and nearly free electron (TB-NFE) model for the host.
Abstract: The electronic structure is calculated, of noble or transition metal based alloys with transitional impurities, using an hybridized tight binding and nearly free electron (TB-NFE) model for the host. In this Hartree-Fock model for which parameters appear only in the host band structure, the author studies selfconsistently the screening of one isolated impurity and of two nth neighbouring impurities (n=1,...,4) in copper. The results are compared with those deduced in the Friedel-Anderson model from the asymptotic approximation: the charge oscillations and the spin polarizations on the nearest neighbours around an impurity cannot be rigorously obtained by the previous asymptotic approximation which does not take into account the selection rules required by the crystal symmetry.
24 citations
TL;DR: In this article, the energy of the conduction state in liquid argon, krypton, and xenon was measured by means of the photo effect and the data were used to calculate the scattering lengths.
Abstract: Abstract The energy of the conduction state in liquid argon, krypton, and xenon was measured by means of the photo-effect. The data are used to calculate the scattering lengths. The relation between scattering length and electron mobility is discussed.
24 citations
TL;DR: In this article, the experimental value of the first special transition from molecular beam studies of C 60 was used to determine the one parameter in a semi-empirical method that couples zero-range potentials with the free electron method.
24 citations