6533b870fe1ef96bd12cf1a8
RESEARCH PRODUCT
On dewetting dynamics of solid films of hydrogen isotopes and its influence on tritium [Beta] spectroscopy
Ernst-wilhelm OttenM. PrzyrembelL. FleischmannJ. BonnBeate BornscheinChristian WeinheimerPaul Leiderersubject
Surface diffusionArrhenius equationMaterials scienceHydrogenpacs:68.45.Gdchemistry.chemical_elementCondensed Matter Physicspacs:23.40.-sElectronic Optical and Magnetic Materialssymbols.namesakeCondensed Matter::Materials SciencechemistryChemical physicsSolid hydrogenpacs:67.70.+nDesorptionsymbolsPhysical chemistryddc:530WettingDewettingPhysics::Atomic PhysicsSpectroscopypacs:67.80.Mgdescription
The dewetting dynamics of solid films of hydrogen isotopes, quench-condensed on a graphite substrate, was measured at various temperatures below desorption by observing the stray light from the film. A schematic model describing the dewetting process by surface diffusion is presented, which agrees qualitatively with our data. The activation energies of different hydrogen isotopes for surface diffusion were determined. The time constant for dewetting of a quench-condensed T2 film at the working temperature of 1.86 K of the mainz neutrino mass experiment was extrapolated.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-07-01 |