排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Backe H. Baum R. -R. Fricke B. Habs D. Hellmann K. Hies M. Illgner Ch. Krameyer Ch. Kunz H. Lauth W. Martin R. Schwamb P. Theobald W. Thörle P. Trautmann N. 《Hyperfine Interactions》1996,97(1):535-541
Istope shift and hyperfine structure measurements have been performed for the242fAm fission isomer with target production rates of only a few per second. The method is based on resonance ionization spectroscopy (RIS) in a buffer gas cell with radioactive decay detection of the ionization process (RADRIS). A relative isotope shift ratioX
exp=IS242f,241/ IS243,241=41.7±0.9 has been measured for the 500.02 nm transition corresponding to a nuclear parameter 242f,241=5.4±0.3 fm2. The analysis of the quadrupole moment based on the deformed Fermi-model of the nuclear charge distribution including second order corrections results inQ
20=38.2 ±1.4(
–0.8
+0.4
)model eb. The measurement of the hyperfine structure splitting of the transition at 466.28 nm yields a negativeg-factor and a nuclear spin ofI=2 orI=3.Work supported by the Bundesministerium für Bildung und Forschung under contract 06 MZ 5661. 相似文献
2.
1