Sökning: "Emma Hedlund"

Hittade 2 avhandlingar innehållade orden Emma Hedlund.

  1. 1. Informationssamhällets geografi - IT, arbetsplatserna och rummet

    Författare :Emma Hedlund; Uppsala universitet.; [2003]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Social and economic geography; Kulturgeografi; SOCIAL SCIENCES Business and economics Human geography; economic geography Human geography; SAMHÄLLSVETENSKAP Ekonomi Kulturgeografi; ekonomisk geografi Kulturgeografi;

    Sammanfattning : .... LÄS MER

  2. 2. Studies of Heavy Ion Induced Desorption in the Energy Range 5-100 MeV/u

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Emma Hedlund; Uppsala universitet.; [2008]
    Nyckelord :Physics; Heavy Ion Induced Desorption; Ultra High Vacuum; NEG Coating; Heavy Ion Accelerators; Test Particle Monte-Carlo; Gas Flow; Throughput; Laser Refractometry; Metrology; Fysik;

    Sammanfattning : During operation of heavy ion accelerators a significant pressure rise has been observed when the intensity of the high energy beam was increased. The cause for this pressure rise is ion induced desorption, which is the result when beam ions collide with residual gas molecules in the accelerator, whereby they undergo charge exchange. LÄS MER