Electron emission at the surface of metal tritide films
| Autor: | Stefan Zukotynski, W.T. Shmayda, J. M. Perz, Nazir P. Kherani, K.G McNeill |
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| Rok vydání: | 1997 |
| Předmět: |
Tritium illumination
Auger electron spectroscopy Auger effect Astrophysics::High Energy Astrophysical Phenomena Mechanical Engineering Monte Carlo method Metals and Alloys chemistry.chemical_element Electron symbols.namesake chemistry Mechanics of Materials Impurity Secondary emission Materials Chemistry symbols Lithium Atomic physics |
| Zdroj: | Journal of Alloys and Compounds. :62-65 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/s0925-8388(96)03086-1 |
| Popis: | Monte Carlo simulations of tritium decay electrons in three metal tritide films, LiT, MgT 2 and TiT 2 , of effectively infinite thickness have been performed to determine distributions of the total electron energy and the normal energy E n at the surface of these materials. Monte Carlo calculations of electron emission at the surface of an effectively infinite `slab' of tritium gas (STP) have also been carried out. Using a planar retarding potential analyzer, measurement of the integrated electron flux and the distribution of normal energies E n from 50 eV to 7.4 keV have been carried out for lithium tritide films of effectively infinite thickness prepared with various tritium to lithium atomic ratios. A comparison of the measured and computed distributions shows that the measured flux is greater than the computed result for E n below approximately 1.5 keV, while for E n above 1.5 keV the two distributions are in good agreement. Calculations of high energy secondary and Auger electron contributions suggest that the observed discrepancy at lower energies can be largely accounted for by Auger electrons associated with impurities in the near-surface region of the lithium tritide films. |
| Databáze: | OpenAIRE |
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