Journal ArticleDOI
Quadrupole moment of the superdeformed band in 131Ce
TLDR
In this paper, a mean lifetime measurement has been carried out on the states in the superdeformed band found in 131Ce using the Doppler shift attenuation method (DSAM).Abstract:
A mean lifetime measurement has been carried out on the states in the superdeformed band found in 131Ce using the Doppler shift attenuation method (DSAM). The measured intrinsic nuclear quadrupole moment is Q0 approximately=6 eb, assuming constant deformation, which corresponds to a quadrupole deformation beta 2 approximately=0.35. This is considerably smaller than the value deduced for 132Ce.read more
Citations
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Journal ArticleDOI
Nuclear Data Sheets for A = 131
TL;DR: In this article, a complete update of previous evaluations of A = 131 was presented together with adopted energies and Jπ of levels in these nuclei, including superdeformed and highly deformed structures in two SD bands and in two HD bands.
Journal ArticleDOI
Second minimum lifetime measurements in 133Nd and 137Nd.
TL;DR: The quadrupole moments of the highly deformed, second minimum bands in {sup 133]Nd and {sup 137}Nd have been extracted from mean lifetime measurements using the Doppler shift attenuation method in good agreement with the predictions of total Routhian surface calculations.
Journal ArticleDOI
Evolution from γ -soft to stable triaxiality in Nd 136 as a prerequisite of chirality
B. F. Lv,C. M. Petrache,A. Astier,E. Dupont,A. Lopez-Martens,Paul Greenlees,H. Badran,T. Calverley,T. Calverley,Daniel Cox,Tuomas Grahn,J. Hilton,J. Hilton,Rauno Julin,Sakari Juutinen,Joonas Konki,Joonas Konki,Matti Leino,Janne Pakarinen,Philippos Papadakis,Philippos Papadakis,Jari Partanen,Panu Rahkila,Mikael Sandzelius,Jan Sarén,Catherine Scholey,Juha Sorri,Juha Sorri,Sanna Stolze,Juha Uusitalo,A. Herzan,Bo Cederwall,A. Ertoprak,H. Liu,Song Guo,M. L. Liu,Y. H. Qiang,Y. H. Qiang,Jie Wang,Xiaojuan Zhou,István Kuti,József Tímár,A. Tucholski,J. Srebrny,Corina Andreoiu +44 more
TL;DR: The level structure of Nd136 has been investigated using the Mo100(Ar40,4n) reaction and the JUROGAM II+RITU+GREAT setup.
Journal ArticleDOI
Highest spin discrete levels in $^{131,132}Ce$: Spin generation near the mesoscopic limit
E. S. Paul,P. T. W. Choy,Corina Andreoiu,A. J. Boston,A. O. Evans,C. Fox,S. Gros,P. J. Nolan,G. Rainovski,J.A. Sampson,H. C. Scraggs,A. Walker,D. E. Appelbe,D. T. Joss,J. Simpson,J. Gizon,A. Astier,N. Buforn,A. Prévost,N. Redon,O. Stézowski,B. M. Nyakó,Dóra Sohler,János Timár,L. Zolnai,D. Bazzacco,S. Lunardi,C. M. Petrache,P. Bednarczyk,D. Curien,N. Kintz,Ingemar Ragnarsson +31 more
TL;DR: In this article, the Euroball IV spectrometer has been used to link the three superdeformed (SD) bands and two SD bands in higher spin to the normal deformed structures.
Journal ArticleDOI
Quadruple moment of the i13/2 intruder band in 139Gd
E. S. Paul,S. A. Forbes,D. B. Fossan,J Gizons,J. R. Hughes,S. M. Mullins,M S Metcalfe,P. J. Nolan,R. J. Poynter,P. H. Regan,G {Smith},R. Wadsworth +11 more
TL;DR: In this paper, the Doppler shift attenuation method was used to extract the mean quadruple moment of the nu i13/2 intruder band in 139Gd, and using Braune stopping powers, a value for the intrinsic nuclear quadrupole moment of Q0 approximately=7.0 eb is suggested, corresponding to a deformation beta 2 approximately=0.35.
References
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Journal ArticleDOI
Rotational bands and particle-hole excitations at very high spin
TL;DR: In this paper, a method of calculating high-spin states of nuclei within the cranked Nilsson-Strutinsky framework is presented and discussed in some detail, such as shape coexistence, shape changes, band crossings and band terminations.
Journal ArticleDOI
Nuclear intrinsic quadrupole moments and deformation parameters
K.E.G. Löbner,M. Vetter,V. Hönig +2 more
TL;DR: In this paper, averaged values for the intrinsic quadrupole moment, Q0′ and different deformation parameters, βq, β, ɛ, δ, ηκ, and δ′, of deformed nuclei in the rare-earth region were presented.
Journal ArticleDOI
Highly deformed intruder bands in the A≈130 mass region
TL;DR: Deformed shell model calculations based on an average Woods-Saxon potential with a monopole pairing force included show for a number of nuclei close to A≈130 the appearance of rotational bands with a large deformation, s2≈0.4 as discussed by the authors.
Journal ArticleDOI
The performance of a bismuth germanate escape suppressed spectrometer
TL;DR: An escape suppressed spectrometer has been built and its performance measured as mentioned in this paper, which consists of three elements: a cylindrically symmetric suppression shield made from bismuth germanate and sodium iodide, and a germanium detector inserted into the shield along its axis.
Journal ArticleDOI
The measurement of the lifetimes of excited nuclear states
P. J. Nolan,J.F. Sharpey-Schafer +1 more
TL;DR: In this article, the experimental techniques of measuring the mean lifetimes tau of excited nuclear states are reviewed, focusing on direct measurements of tau in the region 10-18-10-6 s, especially on techniques involving the observation of Doppler energy shifts of gamma rays.