| Autor: |
U. Mikkelsen, Helge Knudsen, Z. Vilikazi, S. P. Møller, C. Scheidenberger, C. R. Vane, P. Grafström, Sheldon Datz, H.F. Krause, Reinhold Schuch, E. Uggerhøj |
| Rok vydání: |
2000 |
| Předmět: |
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| Zdroj: |
ResearcherID |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.1302701 |
| Popis: |
Electrons ejected in the forward direction from fully-stripped and one-electron 33-TeV Pb ions passing through thin foils of Al and Au have been studied. Spectral peaks centered at a momentum equivalent to the velocity of the projectile have been measured, which are attributed to electron loss to the projectile continuum (ELC). From previous theoretical studies, the ELC ‘cusp’ shape is expected to reflect the initial state of the electron released from the projectile. The ELC peaks are very narrow even for loss from ground-state incident ions. The observed widths arise primarily from instrumental broadening effects-especially multiple Coulomb scattering (MCS). Correction of the measured electron momentum distributions for instrumental broadening leads to very narrow ELC cusps, which have essentially the same widths for loss from incident one-electron ground-state ions and loss from hydrogenic ions populated by electron capture from pair production (ECPP), where there should be significant excited-state fo... |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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