Superdeformed bands in Nd nuclei

Beck, E. M.; McDonald, R. J.; Macchiavelli, A. O.; Bacelar, J. C. S.; Deleplanque, M. A.; Diamond, R. M.; Draper, J. E.; Stephens, F. S.

doi:10.1016/0370-2693(87)91568-1

Cited by 44 publications

(6 citation statements)

References 12 publications

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“…The present work is devoted to refining the spectroscopy of 136 Nd, which is the nearest even-even neighbor of the first chiral candidate 134 Pr [2] and the first reported wobbler 135 Pr outside of the A ≈ 160 region [11]. Located near the center of the triaxial region, this nucleus has been investigated in several previous experiments [43][44][45][71][72][73][74][75][76][77][78][79][80] and in theoretical works published in Refs. [81][82][83][84][85].…”

Section: Introductionmentioning

confidence: 99%

Evolution from γ -soft to stable triaxiality in Nd136 as a prerequisite of chirality

Lyu¹,

Petrache²,

Astier³

et al. 2018

Phys. Rev. C

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The level structure of 136 Nd has been investigated using the 100 Mo(40 Ar, 4n) reaction and the JUROGAM II+RITU+GREAT setup. The level scheme has been extended significantly. Many new bands have been identified both at low and high spin, among which are five nearly degenerate bands interpreted as chiral partners. Excitation energies, spins, and parities of the previously known bands are revised and firmly established, and some previously known bands have been revised. Configurations are assigned to the observed bands based on cranked Nilsson-Strutinsky calculations. The band structure of 136 Nd is now clarified and the various types of single-particle and collective excitations are well understood.

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Section: Introductionmentioning

confidence: 99%

Evolution from γ -soft to stable triaxiality in Nd136 as a prerequisite of chirality

Lyu¹,

Petrache²,

Astier³

et al. 2018

Phys. Rev. C

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“…The presence of the deformation driving νi 13/2 intruder orbital was also observed at high spin in one band of 129 Nd [21]. HD bands developed over extended spin ranges and solid configuration assignments have been identified in Nd nuclei between 129 Nd and 138 Nd [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. Transition quadrupole moments have been measured for HD bands of 133 Nd [27,28,41], 134 Nd [12], 135 Nd [12,28,42], and 137 Nd [27,43].…”

Section: Introductionmentioning

confidence: 83%

Highly deformed bands in Nd nuclei: New results and consistent interpretation within the cranked Nilsson-Strutinsky formalism

Petrache¹,

Lyu²,

Astier³

et al. 2019

Phys. Rev. C

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Three new highly-deformed (HD) bands are identified in 136 Nd and the highly deformed band of 137 Nd is extended at higher spin by four transitions, revealing a band crossing associated with the occupation of the second νi 13/2 intruder orbital. Extended cranked Nilsson-Strutinsky calculations are performed for all HD bands observed in 134 Nd, 136 Nd, and 137 Nd, achieving for the first time a consistent interpretation of all HD bands in the Nd nuclei. The new interpretation has significant consequences, like the change of parity of the yrast HD bands of 134 Nd and 136 Nd, and the involvement of two negative-parity neutron intruder orbitals in the configurations of most HD bands. The present experimental results and their theoretical interpretation represent an important step forward in the understanding of the second-minimum excitations in the Nd nuclei.

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“…In the experimental data existing now, the spin assignment for the rotational levels rests an open question (the only exception is the case of 143Eu [38], where the y-transitions which link superdeformed band to normal levels have been detected). From (7) it is evident that the fitting of the level spectrum is not sensitive to a choice of the spin of a level L A change of I by an arbitrary value AI leads simply to a redefinition of the fitting parameter I 0 by nearly the same A L In some cases, it is necessary to take into account in decomposition (2) also the terms quadratic in co. Remind the reader that it is the same order in co as in the case of "unitary" phases to describe the superdeformed bands in the AN 190 region.…”

Section: )mentioning

confidence: 98%

“…The calculations are made using two sets of data, one with n= 12 transitions and a second with n= 11 transitions where the lowest transition energy has been skiped. The experimental data are taken from [7]. Values in parentheses are "predictions" of transitions not included in the fit Table 9.…”

Section: Other Applications In the A~ 150 Mass Regionmentioning

confidence: 99%

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Superfluid liquid model with triplet pairing for superdeformed bands inA?130?150 region

Piepenbring¹,

Протасов²

1993

Z. Physik A - Hadrons and Nuclei

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Abstract. The superfluid liquid model with triplet pairing is applied to the analysis of the superdeformed bands in A ~ 130-150 region. A two-parameter expression for the 7-transitions energies allows a description, good in the A ~ 150 region and rough for the A ~ 130 nuclei, of the experimental data. The introduction of the third parameter gives considerable (especially in the A~ 130 region) improvement of quality of the description close to or within experimental uncertainties. In this superfluid liquid model the appearance of the superdeformed bands is a consequence of the nuclear matter properties, rather than a shell model feature.

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Superdeformed bands in Nd nuclei

Cited by 44 publications

References 12 publications

Evolution from γ -soft to stable triaxiality in Nd136 as a prerequisite of chirality

Evolution from γ -soft to stable triaxiality in Nd136 as a prerequisite of chirality

Highly deformed bands in Nd nuclei: New results and consistent interpretation within the cranked Nilsson-Strutinsky formalism

Superfluid liquid model with triplet pairing for superdeformed bands inA?130?150 region

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