Rezensionen
Rezensionen
Thomas Pissulla
Kernstrukturuntersuchungen an 180,181Os durch Messung elektromagnetischer Übergangswahrscheinlichkeiten und Weiterentwicklung von Analysesoftware
Buchbesprechung
This work describes the analysis and the results of a Recoil Distance Doppler-shift experiment which was performed using the Cologne plunger at the GASP spectrometer in Legnaro/Italy. The aim was to test whether 1800s can be described using the X(5) model, introduced by Iachello. From the experimental data 14 lifetimes in 1800s (11 not yet published) and 6 lifetimes in 1800s (5 not yet published) were obtained. Regarding excitation energies and intraband transition strengths 1800s can be reasonably described by the X(5) model, while this is not possible for the interband transition strengths between beta and ground state band. The effect is investigated using an IBM-I fit. From the coincidence spectra one branching ratio could be derived. A K-assignment, made in the literature for a negative parity band, could be confirmed experimentally. Additionally a mixing calculation was used to study the s-band crossing at I=14/h. The nucleus 1810s can be described reasonably well in the framework of the PTRM, using one set of parameters for the three bands. Beyond this, new software for the analysis of lifetime data was developed and existing software was updated to fulfil recent needs.
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