Spectroscopy of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Ti</mml:mi><mml:mprescripts /><mml:none /><mml:mn>54</mml:mn></mml:mmultiscripts></mml:math>
 and the systematic behavior of low-energy octupole states in Ca and Ti isotopes

The Advanced GAmma Tracking Array (AGATA), the new generation high-resolution γray spectrometer, has seen the realization of the first phases of its construction and exploitation. A number of nuclear structure studies based on experiments utilizing the principle of γ -ray tracking were carried out in this decade. The combination of highest detection efficiency and position sensitivity allowed very selective spectroscopic studies with stable beams and the use of instable ion beams with the lowest intensities. Nuclear-structure studies commenced already at INFN-LNL (Legnaro, Italy) with a first implementation of the array consisting of five AGATA modules. A larger array of AGATA modules was used at GSI (Darmstadt, Germany) for experiments with unstable ion beams at relativistic energies. The spectrometer was then mounted in a beam line at GANIL (Caen, France). This review discusses several of the obtained results, underlying the progress made and future perspectives. The performed experiments give insights into nuclear structure issues which are connected to single particles, collective degrees of freedom, nucleon interactions and symmetries. Most of the investigated nuclei are located outside the stability line and for stable nuclei the investigations concern unexplored configurations. Altogether the obtained results represent advances which could test theory in exclusive way and motivate new theoretical developments.Opportunities for further γ -ray spectroscopy with the foreseen more advanced phase of the AGATA emerge in the discussions of the presented data.

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Gamma spectroscopy with AGATA in its first phases: New insights in nuclear excitations along the nuclear chart

Bracco

Duchêne

Podolyák

et al. 2021

Progress in Particle and Nuclear Physics

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N=32 shell closure below calcium: Low-lying structure of Ar50

Cortés¹,

Rodríguez²,

Doornenbal³

et al. 2020

Phys. Rev. C

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Spectroscopies of rod- and pear-shaped nuclei in covariant density functional theory

Zhao

2018

Int. J. Mod. Phys. E

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The spectroscopic properties play a crucial role in understanding the structure of nuclei, in particular, the shape and shape transitions of nuclei. In recent years, the exotic shapes of nuclear systems, such as the rod and pear shapes, have attracted a lot of attention. Covariant density functional theory (CDFT) has become a standard tool for nuclear structure calculations, and it provides a global and accurate description of nuclear ground states and excitations. In the present paper, we briefly review the recent progress in covariant density functional theory (DFT) for spectroscopic properties of the rod- and pear-shaped nuclei with the cranking calculations in a rotating mean field and the collective Hamiltonian method beyond mean field. The novel linear-chain structure of alpha clustering is discussed with the cranking approach, and low lying spectra of pear-shaped nuclei are illustrated with the quadrupole–octupole collective Hamiltonian.

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Spectroscopy of Ti54 and the systematic behavior of low-energy octupole states in Ca and Ti isotopes

Cited by 3 publications

References 31 publications

Gamma spectroscopy with AGATA in its first phases: New insights in nuclear excitations along the nuclear chart

Gamma spectroscopy with AGATA in its first phases: New insights in nuclear excitations along the nuclear chart

N=32 shell closure below calcium: Low-lying structure of Ar50

Spectroscopies of rod- and pear-shaped nuclei in covariant density functional theory

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