Sökning: "laser induced desorption"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden laser induced desorption.

  1. 1. OH desorption from Pt in the catalytic formation and decomposition of water

    Författare :Erik Fridell; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; platinum; catalytic water decomposition; hydroxyl; laser-induced flourescence; desorption; catalytic water formation; activation energy for desorption;

    Sammanfattning : .... LÄS MER

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

    Författare :Emma Hedlund; Lars Westerberg; Oleg Malyshev; Manfred Leisch; Uppsala universitet; []
    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

  4. 3. Studies of OH desorption from platinum using spatially resolved imaging of laser induced fluorescence

    Författare :Fredrik Gudmundson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; catalysis; hydroxyl; pressure gap; mass transport; planar laser-induced flourescence; OH; platinum; Pt; kinetic modeling; water information;

    Sammanfattning : .... LÄS MER

  5. 4. Catalytic combustion of hydrogen on a hot palladium catalyst studied by laser spectroscopy and kinetic modelling

    Författare :Åsa Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polycrystalline; platinum; combustion; microcalorimetry; desorption energy; laser-induced flourescence; palladium; surface reactions; reaction modelling; OH hydroxyl; Chemkin; sticking; catalysis; water formation;

    Sammanfattning : .... LÄS MER

  7. 5. Ultrafast Probing of CO Reactions on Metal Surfaces : Changes in the molecular orbitals during the catalysis process

    Författare :Jörgen Gladh; Henrik Öström; Nils Mårtensson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hetrogenous catalysis; CO; transition metals; Ultrafast probing; oxidation; desorption; dissociation; kemisk fysik; Chemical Physics;

    Sammanfattning : This thesis presents experimental studies of three different chemical reaction steps relevant for heterogeneous catalysis: dissociation, desorption, and oxidation. CO on single-crystal metal surfaces was chosen as the model systems. LÄS MER