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- Title
Alpha-gamma decay studies of <sup>255</sup>Rf, <sup>251</sup>No and <sup>247</sup>Fm.
- Authors
Heßberger, F.; Hofmann, S.; Ackermann, D.; Antalic, S.; Kindler, B.; Kojouharov, I.; Kuusiniemi, P.; Leino, M.; Lommel, B.; Mann, R.; Nishio, K.; Popeko, A.; Sulignano, B.; Saro, S.; Streicher, B.; Venhart, M.; Yeremin, A.
- Abstract
The decay of the isotopes 255Rf, 251No and 247Fm produced in the reactions $\mathrm{{}^{207}Pb\ensuremath({}^{50}Ti,2n){}^{255}Rf\ {}^{\alpha}_{\rightarrow}\ {}^{251}No\ \ensuremath{}^{\alpha}_{\rightarrow}\ {}^{247}Fm}$ , and $\mathrm{{}^{206}Pb\ensuremath({}^{48}Ca,3n){}^{251}No\ \ensuremath{}^{\alpha}_{\rightarrow}\ {}^{247}Fm}$ was investigated by means of α-γ spectroscopy. Previously observed γ transitions in coincidence with α decays of 255Rf were confirmed, their energies and line intensities were measured more precisely, and their multipolarities were determined as E1. In 251No a new isomeric state at E * > 1700keV with a half-life of ≈ 2μs was identified. The decay of 247Fm was measured more precisely. A partial level scheme of the daughter nucleus 243Cf could be established.
- Subjects
RADIOACTIVE decay; INTERNAL conversion (Nuclear physics); ISOTOPES; ALPHA decay; GAMMA decay
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2006, Vol 30, Issue 3, p561
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/i2006-10137-2