Electron-impact ionization cross-section measurements forU10+,U13+, andU16+
| Autor: | M. S. Huq, M. Sataka, Fred W Meyer, D. R. Swenson, D. C. Gregory, S. Chantrenne |
|---|---|
| Rok vydání: | 1990 |
| Předmět: | |
| Zdroj: | Physical Review A. 41:106-115 |
| ISSN: | 1094-1622 1050-2947 |
| DOI: | 10.1103/physreva.41.106 |
| Popis: | Absolute measurements are presented for electron-impact single ionization of ${\mathrm{U}}^{10+}$, ${\mathrm{U}}^{13+}$, and ${\mathrm{U}}^{16+}$, and for double ionization of ${\mathrm{U}}^{10+}$ and ${\mathrm{U}}^{13+}$ from below the thresholds to 1500 eV. Metastable components are observed in all three incident-ion beams. The single-ionization cross sections are enhanced due to indirect ionization processes by factors of 4--20 near their peaks, and the double-ionization cross sections are apparently also dominated by indirect ionization. Good agreement is found with distorted-wave calculations for total ionization of ${\mathrm{U}}^{16+}$, the only case where detailed calculations are available for comparison. Individual or closely spaced resonances are clearly resolved in the single-ionization channels for ${\mathrm{U}}^{13+}$ and ${\mathrm{U}}^{16+}$. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|