Classical Size Effect In Copper Thin Films: Impact Of Surface And
... Surface and grain boundary electron scattering contribute significantly to resistivity as the dimensions of polycrystalline metallic conductors are reduced to, and below, the electron mean free path. A quantitative measurement of the relative contributions of surface and grain boundary scattering to ...
... Surface and grain boundary electron scattering contribute significantly to resistivity as the dimensions of polycrystalline metallic conductors are reduced to, and below, the electron mean free path. A quantitative measurement of the relative contributions of surface and grain boundary scattering to ...
ABSTRACT Title of Document:
... does not match the beam profile or if there are errors in the focusing fields themselves, this longitudinal mismatch will launch space-charge waves on the beam. The history of space-charge waves goes back to Simon Ramo and W.C. Hahn with their investigations of space-charge waves in vacuum tubes [8 ...
... does not match the beam profile or if there are errors in the focusing fields themselves, this longitudinal mismatch will launch space-charge waves on the beam. The history of space-charge waves goes back to Simon Ramo and W.C. Hahn with their investigations of space-charge waves in vacuum tubes [8 ...
Optical Indicatrix
... Triclinic minerals have three crystallographic axes of different lengths, none of which is at right angles. Because the only possible symmetry is centre, the indicatrix axes are not constrained to be parallel to any crystal axis. In most cases the optic orientation is specified by indicating the app ...
... Triclinic minerals have three crystallographic axes of different lengths, none of which is at right angles. Because the only possible symmetry is centre, the indicatrix axes are not constrained to be parallel to any crystal axis. In most cases the optic orientation is specified by indicating the app ...
Parametric relaxation in whispering gallery mode exciton-polariton condensates Dietrich, Johne, y,
... with the following two properties: The emission does not originate from the dispersion minimum but is blueshifted by EB = 0.3 meV and arises at a finite and discrete wave vector k ≈ ±0.01 μm−1 . Both properties are strong indications for polariton condensation and can be clearly distinguished from ...
... with the following two properties: The emission does not originate from the dispersion minimum but is blueshifted by EB = 0.3 meV and arises at a finite and discrete wave vector k ≈ ±0.01 μm−1 . Both properties are strong indications for polariton condensation and can be clearly distinguished from ...
Ion Structure and Energetics in the Gas Phase Characterized Using
... quantified the ions by their charge-to-mass ratio (q/m), the inverse of the currently used mass-tocharge ratio (m/q), and was the first to measure the charge of a proton.4 The parabolas in Wien's spectra were poorly resolved and unclear. The low resolution of the q/m values was attributed to either ...
... quantified the ions by their charge-to-mass ratio (q/m), the inverse of the currently used mass-tocharge ratio (m/q), and was the first to measure the charge of a proton.4 The parabolas in Wien's spectra were poorly resolved and unclear. The low resolution of the q/m values was attributed to either ...
Metal Nanoparticles for Microscopy and Spectroscopy
... solutions of colloidal gold NPs, which have a ruby appearance. This color is tunable by particle size and shape (see Fig. 1.1 in Chap. 1), and is due to the resonant response of the 103–104 free electrons that a metal NP typically contains. Due to this resonant response, metal NPs are among the most ...
... solutions of colloidal gold NPs, which have a ruby appearance. This color is tunable by particle size and shape (see Fig. 1.1 in Chap. 1), and is due to the resonant response of the 103–104 free electrons that a metal NP typically contains. Due to this resonant response, metal NPs are among the most ...
Quantum and Semiclassical Scattering Matrix Theory for
... To illustrate the difficulty with nonintegrable systems I wish to imagine a dialogue between a diligent graduate student and her advisor. The graduate student has been hard at work in the lab taking photoabsorption spectra of an atom having a nonintegrable Hamiltonian. After months of building elect ...
... To illustrate the difficulty with nonintegrable systems I wish to imagine a dialogue between a diligent graduate student and her advisor. The graduate student has been hard at work in the lab taking photoabsorption spectra of an atom having a nonintegrable Hamiltonian. After months of building elect ...
StellenboschWN.5
... through the norm of the overlap integral, exhibit strong variations around particle thresholds. Such variations cannot be described in a standard CQS SM framework that applies a "one-isolated-state" ansatz and ignores the coupling to the decay and scattering channels. In the GSM model calculations, ...
... through the norm of the overlap integral, exhibit strong variations around particle thresholds. Such variations cannot be described in a standard CQS SM framework that applies a "one-isolated-state" ansatz and ignores the coupling to the decay and scattering channels. In the GSM model calculations, ...
r - Ultracold Quantum Gases Group
... potential [Jor08, Sch08b], a phenomenon which has been known from solid-state physics for many decades [Mot37]. However, ultracold gases can do more than provide simplified realizations of known phenomena; they also allow a level of experimental control unmatched by any other system. One example for ...
... potential [Jor08, Sch08b], a phenomenon which has been known from solid-state physics for many decades [Mot37]. However, ultracold gases can do more than provide simplified realizations of known phenomena; they also allow a level of experimental control unmatched by any other system. One example for ...
"Low - energy positron interactions with atoms and molecules" Journal of Physics B 38 (2005) R57-R126 C. M. Surko, G. F. Gribakin and S. J. Buckman Comprehensive Review (PDF)
... important cross section measurements. In spite of these developments, the typical energy resolution in these experiments was 0.5 eV. This precluded studies of many important phenomena, including precise studies of threshold effects, study of vibrational and rotational transitions in molecules and o ...
... important cross section measurements. In spite of these developments, the typical energy resolution in these experiments was 0.5 eV. This precluded studies of many important phenomena, including precise studies of threshold effects, study of vibrational and rotational transitions in molecules and o ...
Surface Enhanced Raman Scattering Spectroscopy
... spectra taken at different particles show some different characteristics, which suggest the difference in the local environment. This experiment showed not all the molecules (or particles) were involved in the SERS effect, only a few of them display strong enhancement in signal. This is in accordanc ...
... spectra taken at different particles show some different characteristics, which suggest the difference in the local environment. This experiment showed not all the molecules (or particles) were involved in the SERS effect, only a few of them display strong enhancement in signal. This is in accordanc ...
Optical Comms 2004 (Summer)
... Overall then it is apparent that there is significant trade-off between a high acceptance angle and a large fibre bandwidth. The impact of this trade-off in an actual optical fibre system is important, for good coupling efficiency for optical sources such as lasers or particularly LEDs a high fibre ...
... Overall then it is apparent that there is significant trade-off between a high acceptance angle and a large fibre bandwidth. The impact of this trade-off in an actual optical fibre system is important, for good coupling efficiency for optical sources such as lasers or particularly LEDs a high fibre ...
power point - Space Plasma Physics
... Shower aging is effectively neglected, we treat only maximum TM and TE mode scattering for normally incident wave m is the azimuthal “quantum number” ...
... Shower aging is effectively neglected, we treat only maximum TM and TE mode scattering for normally incident wave m is the azimuthal “quantum number” ...
Spin-Orbital Separation in the quasi 1D Mott
... to the atomic nucleus it also acquires an angular momentum quantum number corresponding to the quantized atomic orbital it occupies (e.g., s, p or d). Even if electrons in solids form bands and delocalize from the nuclei, in Mott insulators they retain their three fundamental quantum numbers: spin, ...
... to the atomic nucleus it also acquires an angular momentum quantum number corresponding to the quantized atomic orbital it occupies (e.g., s, p or d). Even if electrons in solids form bands and delocalize from the nuclei, in Mott insulators they retain their three fundamental quantum numbers: spin, ...
Introduction
... Finally, thank you to Nick Brook for reading and providing lots of helpful comments about my thesis as well as lots of less helpful comments on a great range of subjects ranging from football to flying! ...
... Finally, thank you to Nick Brook for reading and providing lots of helpful comments about my thesis as well as lots of less helpful comments on a great range of subjects ranging from football to flying! ...
Practical Aspects of Mirror Usage in Optical Systems for
... The newcomer to a biological optics laboratory browses to a website with a catalog of optical parts, intending to purchase a mirror, and is confronted by a large number of offerings. Each part description indicates it is to be used for a specific purpose, wavelength range, etc. The newcomer first wo ...
... The newcomer to a biological optics laboratory browses to a website with a catalog of optical parts, intending to purchase a mirror, and is confronted by a large number of offerings. Each part description indicates it is to be used for a specific purpose, wavelength range, etc. The newcomer first wo ...
Gaussian Beams - Colgate University
... For example. If a beam with a beam spot w1 = 1 mm is incident on a lens that changes its radius to say R2 = 10 cm, then we see that πw22 /λ = 5 m, consistent with Eq. 1.28. When Eq 1.28 holds Eq. 1.27 becomes z2 ≃ R2 . This is the geometric optics limit. The waist will be given by w02 = ...
... For example. If a beam with a beam spot w1 = 1 mm is incident on a lens that changes its radius to say R2 = 10 cm, then we see that πw22 /λ = 5 m, consistent with Eq. 1.28. When Eq 1.28 holds Eq. 1.27 becomes z2 ≃ R2 . This is the geometric optics limit. The waist will be given by w02 = ...
Practical Aspects of Mirror Usage in Optical Systems for
... The newcomer to a biological optics laboratory browses to a website with a catalog of optical parts, intending to purchase a mirror, and is confronted by a large number of offerings. Each part description indicates it is to be used for a specific purpose, wavelength range, etc. The newcomer first wo ...
... The newcomer to a biological optics laboratory browses to a website with a catalog of optical parts, intending to purchase a mirror, and is confronted by a large number of offerings. Each part description indicates it is to be used for a specific purpose, wavelength range, etc. The newcomer first wo ...
PDF - 124 pages
... quadratic form in ~k. It is convenient to write the proportionality in terms of the quantity called the effective mass m∗ h̄2 k 2 ...
... quadratic form in ~k. It is convenient to write the proportionality in terms of the quantity called the effective mass m∗ h̄2 k 2 ...
Theoretical studies of microcavities and photonic crystals for lasing and waveguiding applications
... to initiate the lasing effect. In contrast, microcavities can be utilized to sustain highly efficient, almost ”thresholdless”, lasing action. Such the efficiency is related to the existence of the natural cavity resonances. These resonances are known as morphology-dependent resonances or whispering ...
... to initiate the lasing effect. In contrast, microcavities can be utilized to sustain highly efficient, almost ”thresholdless”, lasing action. Such the efficiency is related to the existence of the natural cavity resonances. These resonances are known as morphology-dependent resonances or whispering ...
Cross section (physics)
The cross section is an effective area that quantifies the intrinsic likelihood of a scattering event when an incident beam strikes a target object, made of discrete particles. The cross section of a particle is the same as the cross section of a hard object, if the probabilities of hitting them with a ray are the same. It is typically denoted σ and measured in units of area.In scattering experiments, one is often interested in knowing how likely a given event occurs. However, the rate depends strongly on experimental variables such as the density of the target material, the intensity of the beam, or the area of overlap between the beam and the target material. To control for these mundane differences, one can factor out these variables, resulting in an area-like quantity known as the cross section.