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1.
B(E1) rates in $^{229}Ra$ and traces of octupole correlations at the upper border of the A=225 island / ISOLDE Collaboration
The introduction of the fast timing beta gamma gamma (t) method at ISOLDE (CERN) has opened the heavy actinide region to lifetime measurements down to tenths of picoseconds, providing a direct experimental means of measuring the E1 rates. Recently, this method has been successfully applied to /sup 229/Ra, located at the border of the A=225 island of octupole deformation. [...]
Geneva : CERN, 1999
In : Conference on Experimental Nuclear Physics in Europe : Facing the Next Millennium, Seville, Spain, 21 - 26 Jun 1999, pp.127-130
2.
Nuclear structure of $^{231}$Ra / ISOLDE Collaboration
The study of the upper border of the octupole deformation region near A=225, where the octupole deformation vanishes in the presence of a well developed quadrupole field, is of great relevance in order to understand the interplay of octupole and quadrupole collectivities. Within the IS322 collaboration at CERN we carry out a systematic investigation of the heavy Fr-Th nuclei that presently includes $^{227}$Fr, $^{227, 228, 229}$Ra, $^{229}$Ac and $^{229, 231}$Th. [...]
Geneva : CERN, 1999
In : Conference on Experimental Nuclear Physics in Europe : Facing the Next Millennium, Seville, Spain, 21 - 26 Jun 1999, pp.131-132
3.
Octupole correlations in $^{229}Ra$ / ISOLDE Collaboration
The structure of /sup 229/Ra has been studied in the beta /sup -/ decay of /sup 229/Fr. Spins and parities have been determined from the conversion electron measurements, while half-lives for the 137.5, 142.7, 168.8, 213.0 and 479.0 keV levels have been measured in the ps and ns ranges via the fast timing beta gamma gamma (t) method. [...]
Geneva : CERN, 1999 - Published in : Nucl. Phys. A 657 (1999) 355-90

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