Essays about: "bragg"

Showing result 21 - 25 of 38 essays containing the word bragg.

  1. 21. Development and validation of a scanned proton beam model for dose distribution verification using Monte Carlo

    University essay from Stockholms universitet/Fysikum

    Author : Erik Almhagen; [2015]
    Keywords : ;

    Abstract : Background and purpose: Although proton therapy is becoming increasingly common as a radiotherapy modality, facilities offering proton therapy are still scarce in comparison to photon therapy. Sweden's new proton therapy facility, Skandionkliniken, is scheduled to being operation during August 2015, employing the pencil beam scanning technique. READ MORE

  3. 22. Computational comparison of Bragg scattering and TDS intensity in a TEM at different temperatures using a gadolinium crystal

    University essay from Uppsala universitet/Materialteori

    Author : Paul Zeiger; [2015]
    Keywords : ;

    Abstract : .... READ MORE

  4. 23. Absorption of light through isolated and coupled resonances in horizontal InP nanowire arrays

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Ali Hosseinnia; [2015]
    Keywords : Coupling; Optical resonances; Horizontal nanowires; Periodic Array; Indium Phosphide; Finite Element Method; Scattering Matrix Method; Eigen function method; Mie Theory; Scattering; Absorption; Nano-Optics; Nanowire; Physics and Astronomy;

    Abstract : We have studied the interaction of light with two types of closely related nanostructures: a single horizontal InP nanowire and an infinite periodic array of such nanowires. The study has been done theoretically by calculating the absorption cross section of the nanowires via a semi analytical method, the Mie theory, and two numerical methods, the scattering matrix method (SMM) and the finite element method (FEM) to perform electromagnetic modeling. READ MORE

  5. 24. Plasmonic resonances in metallic nanoarrays

    University essay from Uppsala universitet/Materialfysik

    Author : Jana Huber; [2015]
    Keywords : Plasmon; magnetism; optics; magneto-plasmonics;

    Abstract : The optical and magneto-optical response of plasmonic resonances in metallic nanoarrays out of square structures, either in holes or islands, were investigated. The excitation of the Bragg Plasmons takes place within a grating. READ MORE

  6. 25. Design of Multilayer Dielectric Mirrors Optimized for Femtosecond Laser Pulses

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Fredrik Bertilsson; [2015]
    Keywords : Physics and Astronomy;

    Abstract : A general method for modelling reflection in a multilayer structure is developed. This is used to simulate how a Gaussian Ti:sapphire femtosecond pulse reflects off of a periodic SiO2/TiO2 dielectric stack at normal incidence. The method is based on a transfer matrix approach combined with the fast Fourier transform in MATLAB. READ MORE