- Radiation damage due to knock-on processes on carbon foils cooled to liquid helium temperature.
Radiation damage due to knock-on processes on carbon foils cooled to liquid helium temperature.
Ultramicroscopy (1978-01-01)
I Dietrich, F Fox, H G Heide, E Knapek, R Weyl
PMID695132
RÉSUMÉ
Radiation damage on a holey carbon foil was investigated in an electron microscope with a superconducting lens system, where the temperature of the specimen and its environment initially was 4 K. Due to an electron dose of 2 X 10(4) As/cm2 the diameter of a hole increased 5 nm. Rough calculations show that this increase can be ascribed to knock-on processes. Estimates of the rise in specimen temperature during the irradiation are given.
MATÉRIAUX
Référence du produit
Marque
Description du produit
Carbon, foil, 5x5mm, thickness 2.0mm, hOpg
Carbon, foil, 100x100mm, thickness 0.5mm, flexible graphite, 99.8%
Carbon, foil, 10x10mm, thickness 2.0mm, hOpg
Carbon, foil, 50x50mm, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, not light tested, 100x100mm, thickness 0.075mm, flexible graphite, 99.8%
Carbon, foil, 25x25mm, thickness 0.5mm, pyrolytic graphite, 99.99%
Carbon, foil, 15x15mm, thickness 2.0mm, hOpg
Carbon, foil, 25x25mm, thickness 0.1mm, pyrolytic graphite, 99.99%
Carbon, foil, 12mm disks, thickness 0.5mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, 100x100mm, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, 100x100mm, thickness 0.125mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, 25x25mm, thickness 0.25mm, rigid graphite, fine grain size, 99.997%
Carbon, foil, 50x50mm, thickness 1.0mm, flexible graphite, 99.8%
Carbon, foil, 25x25mm, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, 50x50mm, thickness 0.1mm, pyrolytic graphite, 99.99%
Carbon, foil, 25x25mm, thickness 0.25mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, 50x50mm, thickness 0.2mm, pyrolytic graphite, 99.99%
Carbon, foil, not light tested, 150x150mm, thickness 0.075mm, flexible graphite, 99.8%
Carbon, foil, 300x300mm, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, 50x50mm, thickness 0.5mm, flexible graphite, 99.8%
Carbon, foil, 150x150mm, thickness 1.0mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, 50x50mm, thickness 0.35mm, flexible graphite, 99.8%
Carbon, foil, 150x150mm, thickness 1.0mm, flexible graphite, 99.8%
Carbon, foil, 25x25mm, thickness 0.5mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, not light tested, 300x300mm, thickness 0.075mm, flexible graphite, 99.8%
Carbon, foil, 100x100mm, thickness 0.35mm, flexible graphite, 99.8%
Carbon, foil, 50x50mm, thickness 0.25mm, rigid graphite, fine grain size, 99.997%
Carbon, foil, 5x10mm, thickness 2.0mm, hOpg
Carbon, foil, 10mm disks, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, 100x100mm, thickness 1.0mm, flexible graphite, 99.8%