Search for dissertations about: "Monte Carlo investigation"

Showing result 1 - 5 of 58 swedish dissertations containing the words Monte Carlo investigation.

  1. 1. Studies of clinical proton dosimetry using Monte Carlo simulation and experimental techniques

    Author : Joakim Medin; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Proton dosimetry; Proton stopping power; Monte Carlo; Proton stopping-power ratios; Ionization chamber calibration; medicinsk strålningsfysik; Medical Radiation Physics;

    Abstract : The present work aims at improving clinical proton dosimetry based on ionization chambers, and to bring its state of development closer to the corresponding status of conventional photon and electron dosimetry. In order to accomplish this, both theoretical and experimental methods have been used. READ MORE

  2. 2. Monte Carlo Simulations of the Equilibrium Properties of Semi-stiff Polymer Chains : Efficient Sampling from Compact to Extended Structures

    Author : Alexey Siretskiy; Christer Elvingson; Alexander Lyubartsev; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; polymers; equilibrium properties; statistical mechanics; computer simulation; Monte Carlo; Wang-Landau; compact structures; parallel computations; Physical chemistry; Fysikalisk kemi; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Abstract : Polymers is a class of molecules which can have many different structures due to a large number of degrees of freedom. Many biopolymers, e.g. DNA, but also synthetic macromolecules have special structural features due to their backbone stiffness. READ MORE

  3. 3. Development of Monte Carlo track structure simulations for protons and carbon ions in water

    Author : Thiansin Liamsuwan; Hooshang Nikjoo; Shuzo Uehara; David Liljequist; Michael Dingfelder; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Radiation track structure; Monte Carlo simulations; interaction cross sections; classical trajectory Monte Carlo CTMC method; microdosimetry; ion beams; medicinsk strålningsfysik; Medical Radiation Physics;

    Abstract : The goal of radiation therapy is to eradicate tumour cells while minimising radiation dose to healthy tissues. Ions including protons and carbon ions have gained increasing interest for cancer treatment. READ MORE

  4. 4. Structure Modeling with X-ray Absorption and Reverse Monte Carlo: Applications to Water

    Author : Mikael Leetmaa; Lars G M Pettersson; John Rehr; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; water structure; x-ray absorption; spectroscopy; diffraction; reverse monte carlo; XAS; EXAFS; XANES; RMC; TP-DFT spectrum calculations; Physics; Fysik; kemisk fysik; Chemical Physics;

    Abstract : Water is an important substance. It is part of us, of our environment, and is a fundamental prerequisite for the existence of life as we know it. The structure of water is still, after over 100 years of research on the subject, however under debate. READ MORE

  5. 5. Computational investigation of interface structure and composition in cemented carbides at finite temperatures

    Author : Erik Fransson; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; Molecular dynamics; Hard Metals; Interfacial free energies; Monte Carlo; Cemented carbides; Force constants; Cluster expansion;

    Abstract : WC-Co cemented carbides combine superb hardness with high toughness making them ideal for usage in high-speed machining of steels and in wear resistance tools. These excellent mechanical properties are to a large extent dependent on the microstructure and thus the interfacial properties of the material. READ MORE