Collective and single particle structure in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Rh</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>103</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>

Dejbakhsh, H.; Schmitt, R.; Mouchaty, G.

doi:10.1103/physrevc.37.621

Cited by 23 publications

(13 citation statements)

References 50 publications

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“…The configuration-fixed calculations provided the π(1g 9/2 ) −1 (more precisely, seven protons in g 9/2 shell) and the π(2p 1/2 ) 1 unpaired-nucleon configurations for bands A and B, in a good agreement with previous configuration assignments [32]. Among the five lowest-lying configurations with three unpaired nucleons, one positive-parity and four negative-parity configurations have been found.…”

Section: Mχd Insupporting

confidence: 70%

“…Bands 3 and 6 were first reported in Ref. [32] up to spins 29/2 and 25/2, respectively, with a tentative configuration assignment of π(g 9/2 ) 2 (p 1/2 ). In the present work we extended these bands to spins 39/2 and 35/2, respectively.…”

Section: Mχd Inmentioning

confidence: 99%

“…The data analysis was carried out using the radware software package [31]. A more complete level scheme of 103 Rh was constructed using the observed coincidence relations and relative intensities of the gamma transitions and based on the formerly reported states [19,32]. Spin assignments for the new states were deduced from the measurements of angular-intensity ratios, based on the method of directional correlation from oriented states (DCO) [33].…”

Section: Mχd Inmentioning

confidence: 99%

“…Bands A and B were formerly reported in Ref. [32], while bands 1 and 2 were identified earlier and assigned as a chiral doublet with configuration π(g 9/2 ) ⊗ ν(h 11/2 ) 2 in …”

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confidence: 99%

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Multiple Chiral Doublet Bands of Identical Configuration inRh103

et al. 2014

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Three sets of chiral doublet band structures have been identified in the 103 Rh nucleus. The properties of the observed chiral doublet bands are in good agreement with theoretical results obtained using constrained covariant density functional theory and particle rotor model calculations. Two of them belong to an identical configuration, and provide the first experimental evidence for a novel type of multiple chiral doublets, where an "excited" chiral doublet of a configuration is seen together with the "yrast" one. This observation shows that the chiral geometry in nuclei can be robust against the increase of the intrinsic excitation energy.PACS numbers: 21.10. Hw,21.10.Re,23.20.Lv A novel form of spontaneous symmetry breaking, the chiral rotation of triaxial nuclei, was suggested in 1997 [1]. It was shown that in special circumstances, referred to as chiral geometry, in the intrinsic frame of the rotating triaxial nucleus the total angular momentum vector lies outside the three principal planes. Thus, its components along the principal axes can be oriented in leftand right-handed ways. In the laboratory frame the chiral symmetry is restored, which manifests itself as a pair of ∆I = 1 nearly degenerate bands with the same parity. Such chiral doublet bands were first identified in four N = 75 isotones in 2001 [2]. So far, many chiral candidate nuclei have been reported experimentally in the A ∼ 80, 100, 130, and 190 mass regions [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Besides the simplest chiral configurations composed of one unpaired proton and neutron, composite chiral configurations, containing more than one unpaired protons and/or neutrons, have also been observed in the odd-mass or even-even neighbors of the odd-odd chiral nuclei [10,18]. These observations show that chirality is not restricted to a certain configuration in a mass region, i.e. the chiral geometry can be robust against the change of configuration. It was even demonstrated recently by Meng et al. [22][23][24][25], based on adiabatic and configuration-fixed constrained triaxial covariant density functional theory (CDFT) calculations, that it is possible to have multiple pairs of chiral doublet bands in a single nucleus, and the acronym MχD was introduced for this phenomenon. The first experimental evidence for the predicted MχD has been reported in 133 Ce [26], and also possibly in 107 Ag [27].It is also interesting to study the robustness of chiral geometry against the increase of the intrinsic excitation energy, i.e. if the chiral geometry is sustained in the higher-lying bands of a certain chiral configuration. In all the known cases the chiral doublet corresponds to the two lowest-lying bands of a configuration. Even for MχD in133 Ce [26] and 107 Ag [27], each chiral doublet structure corresponds to two lowest-lying bands with a distinct configuration. Therefore, study of the third and forth bands of the same chiral configuration is needed to answer the question of the investigated robustness. Very recent ...

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Section: Mχd Insupporting

confidence: 70%

Section: Mχd Inmentioning

confidence: 99%

Section: Mχd Inmentioning

confidence: 99%

“…Bands A and B were formerly reported in Ref. [32], while bands 1 and 2 were identified earlier and assigned as a chiral doublet with configuration π(g 9/2 ) ⊗ ν(h 11/2 ) 2 in …”

mentioning

confidence: 99%

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Multiple Chiral Doublet Bands of Identical Configuration inRh103

et al. 2014

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“…A three quasiparticle configuration of 103 Rh, πg 9/2 −1 ⊗ νh 11/2 2 was assigned in Ref. [19] for the bands with the band head at I = 23 2 . The energy degeneracy is less than 400 keV over the entire spin range.…”

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confidence: 99%

Lifetime measurement of candidate chiral doublet bands in theRh103,104isotopes with the recoil-distance Doppler-shift method in inverse kinematics

et al. 2008

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Lifetimes of chiral candidate structures in 103,104 Rh were measured using the recoil distance Doppler-shift method. The Gammasphere detector array was used in conjunction with the Cologne plunger device. Excited states of 103,104 Rh were populated by the 11 B( 96 Zr, 4n) 103 Rh and 11 B( 96 Zr, 3n) 104 Rh fusion-evaporation reactions in inverse kinematics. Three and five lifetimes of levels belonging to the proposed chiral doublet bands are measured in 103 Rh and 104 Rh, respectively. The previously observed even-odd spin dependence of the B(M1)/B(E2) values is caused by the variation in the B(E2) values, whereas the B(M1) values decrease as a function of spin.Nuclear chirality is the most recently recognized form of spontaneous symmetry breaking in nuclei [1]. Mutually orthogonal coupling of three angular momenta results in the formation of either left-or right-handed geometry in the bodyfixed frame and leads to a doubling of states in the laboratory frame. The two systems are related via time reversal rather than parity transformation, thereby making nuclear chirality unique among other chiralities observed in a wide scale range of nature from elementary particles to biological systems such as human hands. In nuclei, stable triaxial deformation is essential for the mutual perpendicular coupling of the angular momenta involved.Nearly degenerate pairs of I = 1 rotational bands, which are interpreted as a manifestation of chirality, are observed systematically in several odd-odd and in a few odd-A nuclei in the mass A ∼ 130 [2-9] and the A ∼ 100 [10-14] regions. In these odd-odd nuclei, three angular momenta are provided by the valence proton, valence neutron, and the core rotation that align along the respective three principal axes of the triaxially deformed core to minimize the energy of the nuclear system. In odd-A nuclei, chiral bands are built on the three quasiparticle configuration in which a broken pair of nucleons provides one of the three angular momenta.Observation of chiral doublet bands demands an experimental verification of identical properties between the doublet members. Therefore, two experimental criteria must * tomokazu@rcnp.osaka-u.ac.be fulfilled; (i) the observation of nearly degenerate I = 1 bands built on the same single-particle configuration and (ii) identical electromagnetic properties, namely similar B(E2) and B(M1) values of in-band and interband transitions. In addition, as a consistency check for the perpendicular coupling of single particle angular momenta and the core rotation, constancy of S(I ) = [E(I ) − E(I − 1)]/2I as a function of spin, is expected. Early studies have concentrated on the criterion (i) and identified the chiral doublet candidates. However, the more stringent test (ii) has been pursued with lifetime measurements of 134 pr [15], 132 La, 128 Cs [16], and 135 Nd [17] in the mass A ∼ 130 region. The results for 134 Pr, of which the doublet structures exhibit the best overall energy degeneracy, revealed similar B(M1) values, but 2-3 times larger B(E2) values for...

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Chirality in Nuclei

Pancholi

2011

Springer Tracts in Modern Physics

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Collective and single particle structure inRh103

Cited by 23 publications

References 50 publications

Multiple Chiral Doublet Bands of Identical Configuration inRh103

Multiple Chiral Doublet Bands of Identical Configuration inRh103

Lifetime measurement of candidate chiral doublet bands in theRh103,104isotopes with the recoil-distance Doppler-shift method in inverse kinematics

Chirality in Nuclei

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