Detailed spectroscopy of the chiral-twin candidate bands in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>136</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Pm</mml:mi></mml:math>

Hartley, D. J.; Riedinger, L. L.; Riley, M. A.; Balabanski, D. L.; Kondev, F. G.; Laird, R. W.; Pfohl, J.; Archer, D. E.; Brown, T. B.; Clark, R. M.; Devlin, M.; Fallon, P.; Hibbert, I. M.; Joss, D. T.; LaFosse, D. R.; Nolan, P. J.; O’Brien, N. J.; Paul, E. S.; Sarantites, D. G.; Sheline, R.K.; Shepherd, S. L.; Simpson, John; Wadsworth, R.; Zhang, Jingye; Semmes, P.B.; Dönau, F.

doi:10.1103/physrevc.64.031304

Cited by 85 publications

(20 citation statements)

References 17 publications

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“…• High-spin states were populated in 136 Pm by the 105 Pd( 35 Cl,2p2n) reaction, where the 35 Cl beam was accelerated to 173 MeV [157]. The chiral-twin candidate bands earlier observed in 136 Pm, have been extended to high spins [ I= (21)], using the Gammasphere γ -ray spectrometer and the Microball charged-particle detector array.…”

Section: Discussionmentioning

confidence: 99%

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Specific features and symmetries for magnetic and chiral bands in nuclei

Râduţâ

2016

Progress in Particle and Nuclear Physics

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Magnetic and chiral bands have been a hot subject for more than twenty years. Therefore, quite large volumes of experimental data as well as theoretical descriptions have been accumulated. Although some of the formalisms are not so easy to handle, the results agree impressively well with the data. The objective of this paper is to review the actual status of both experimental and theoretical investigations. Aiming at making this material accessible to a large variety of readers, including young students and researchers, I gave some details on the schematic models which are able to unveil the main features of chirality in nuclei. Also, since most formalisms use a rigid triaxial rotor for the nuclear system's core, I devoted some space to the semi-classical description of the rigid triaxial as well as of the tilted triaxial rotor. In order to answer the question whether the chiral phenomenon is spread over the whole nuclear chart and whether it is specific only to a certain type of nuclei, odd-odd, odd-even or even-even, the current results in the mass regions of $A\sim 60,80,100,130,180,200$ are briefly described for all kinds of odd/even-odd/even systems. The chiral geometry is a sufficient condition for a system of proton-particle, neutron-hole and a triaxial rotor to have the electromagnetic properties of chiral bands. In order to prove that such geometry is not unique for generating magnetic bands with chiral features, I presented a mechanism for a new type of chiral bands. One tries to underline the fact that this rapidly developing field is very successful in pushing forward nuclear structure studies.Comment: 80 pages, 22 figure

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Section: Discussionmentioning

confidence: 99%

“…Partial level scheme of 136 Pm; only twin bands 1 and 2 are presented. Details about spin and parities may be found in Ref [157]…”

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Specific features and symmetries for magnetic and chiral bands in nuclei

Râduţâ

2016

Progress in Particle and Nuclear Physics

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“…Initially, these ∆J = 1 doublet bands had been interpreted as a manifestation of "chirality" in the sense of the angular momentum coupling [9]. Several theoretical models have been applied in a number of articles, like the tilted axis cranking (TAC) model [1]- [2], [8], [10], the core-quasiparticle coupling model (CQPCM) [11], the particle-rotor model (PRM) [4]- [5], [12], two quasiparticle + triaxial rotor model (TQPTR) [13], core-particle-hole coupling model (CPHCM) [7]. All these models have one assumption in common, they suppose a rigid triaxial core and hence support the interpretation of the doublet bands of chiral structure.…”

Section: Introductionmentioning

confidence: 99%

Structure of the doublet bands in doubly odd nuclei: The case ofCs128

Ganev

Brant

2010

Phys. Rev. C

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The structure of the ∆J = 1 doublet bands in 128 Cs is investigated within the framework of the Interacting Vector Boson Fermion Model (IVBFM). A new, purely collective interpretation of these bands is given on the basis of the used boson-fermion dynamical symmetry of the model. The energy levels of the doublet bands as well as the absolute B(E2) and B(M 1) transition probabilities between the states of both yrast and yrare bands are described quite well. The observed odd-even staggering of both B(M 1) and B(E2) values is reproduced by the introduction of an appropriate interaction term of quadrupole type, which produces such a staggering effect in the transition strengths. The calculations show that the appearance of doublet bands in certain odd-odd nuclei could be a consequence of the realization of a larger dynamical symmetry based on the non-compact supersymmetry group OSp(2Ω/12, R).

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“…The occurrence of chirality in nuclear physics was originally suggested in 1997 by Frauendorf and Meng in particle-rotor model (PRM) and tilted axis cranking (TAC) approach for triaxially deformed nuclei [1]. Since then, lots of experimental [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33] as well as theoretical efforts [34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,…”

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Open problems in understanding the nuclear chirality

Meng¹,

Zhang²

2010

J. Phys. G: Nucl. Part. Phys.

148

130

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Open problems in the interpretation of the observed pair of near degenerate ∆I = 1 bands with the same parity as the chiral doublet bands are discussed. The ambiguities for the existing fingerprints of the chirality in atomic nuclei and problems in existing theory are discussed, including the description of quantum tunneling in the mean field approximation as well as the deformation, core polarization and configuration of particle rotor model (PRM). Future developments of the theoretical approach are prospected.

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Detailed spectroscopy of the chiral-twin candidate bands in136Pm

Cited by 85 publications

References 17 publications

Specific features and symmetries for magnetic and chiral bands in nuclei

Specific features and symmetries for magnetic and chiral bands in nuclei

Structure of the doublet bands in doubly odd nuclei: The case ofCs128

Open problems in understanding the nuclear chirality

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