Antimagnetic rotation in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>104</mml:mn></mml:msup></mml:math>Pd

Rather, N.; Roy, S.; Datta, Pradip; Chattopadhyay, S.; Goswami, A.; Nag, Somnath; Palit, R.; Pal, S.; Saha, S.; Sethi, J.; Trivedi, T.; Jain, H. C.

doi:10.1103/physrevc.89.061303

Cited by 29 publications

(34 citation statements)

References 25 publications

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“…It is unlikely as making symmetric shears out of (πg 9/2 ) −4 has to be very selective and involves strong proton-proton interaction strength. In general, the AMR bands based on the πg configurations have been identified in 105−108,110 Cd [17,18] with (m= 0, 1, 2, and n = 1, 2) and 104 Pd [19] with (m = 2 and n = 2) on the basis of lifetime measurements. The present TAC model calculations also infer the π(g 9/2 ) −2 based configuration for band B3.…”

Section: Tilted-axis Cranking Shell Model Calculationsmentioning

confidence: 99%

“…In such bands, the magnetic rotor assimilate closing of the blades of a pair of shears involving angular momenta of proton holes and neutron particles. The AMR bands based on the πg −2 9/2 related configurations have been identified in [105][106][107][108]110 Cd [17,18] and 104 Pd [19] on the basis of lifetime measurements. These bands are generated by simultaneous closing of a pair of g −1 9/2 proton angular momentum blades towards the neutron angular momentum in the twin shears geometry.…”

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confidence: 99%

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Band structures in Pd101

et al. 2017

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Excited states in the 101 Pd nucleus were investigated through the 75 As( 31 P, 2p3n) fusion-evaporation reaction at E lab = 125 MeV using the Indian National Gamma Array (INGA) spectrometer equipped with 21 clover Ge detectors. The level scheme is considerably extended for medium spin values. New positive-parity band structures in 101 Pd have been studied within the framework of the projected shell model (PSM) and are found to undergo transition from single quasiparticle to high-K three quasiparticle configuration after bandcrossing, i.e., from principal-axis rotation to tilted-axis rotation. The negative-parity band structures are discussed in the framework of the hybrid version of tilted-axis cranking (TAC) shell model calculations. The observed alignment gain in the lowest excited νh 11/2 negative-parity band results from successive (νg 7/2 ) 2 and (πg 9/2 ) 2 pair alignments. The higher excited negative-parity bands are reproduced for the ν[h 11/2 (g 7/2 /d 5/2 ) 2 ] and (πg 9/2 ) −2 ⊗ νh 11/2 configurations.

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Section: Tilted-axis Cranking Shell Model Calculationsmentioning

confidence: 99%

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confidence: 99%

Band structures in Pd101

et al. 2017

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“…These type of excitation mechanism was first reported by Zhu et al [8] from the spectroscopic investigation of 100 Pd nucleus. These bands are characterized by decreasing electric quadrupole transition rates [B(E2)] with increasing spin [9][10][11][12][13][14][15]. The intriguing feature of the falling trend of the B(E2) values of these sequences has been visualized as a new form of quantized rotation, known as antimagnetic rotation * Electronic address: asimananda.goswami@saha.ac.in (AMR) that has also been interpreted in the framework of shears mechanism [16].…”

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confidence: 99%

“…Since both these two types of quantized rotation are the consequence of the shear mechanism, it is expected to observe both of them in the mentioned mass regions. However, till day, simultaneous occurrence of these two phenomena have been observed only in mass ∼ 100 region where firm experimental evidence of antimagnetic rotation has been reported in several Cd [9][10][11][12][13][14] isotopes and in the 104 Pd nucleus [15] along with the observation of MR bands [22,23]. These bands have been interpreted in the framework of simple geometric model [14,28,29] and as well as the fully self-consistent microscopic tilted axis cranking method based on covariant density functional theory [30].…”

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Antimagnetic rotation and sudden change of electric quadrupole transition strength in 143 Eu

et al. 2015

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Lifetimes of the states in the quadrupole structure in 143 Eu have been measured using the Doppler shift attenuation method and the parity of the states in the sequence has been firmly identified from polarization measurements using the Indian National Gamma Array. The decreasing trends of the deduced quadrupole transition strength B(E2) with spin, along with increasing J (2) /B(E2) values before the band crossing, conclusively establish the origin of these states as arising from antimagnetic rotation. The abrupt increase in the B(E2) values after the band crossing in the quadrupole band, a novel feature observed in the present experiment, may possibly indicate the crossing of different shears configurations resulting in the re-opening of a shears structure. The results are reproduced well by numerical calculations within the framework of a semi-classical geometric model.

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“…An antim agnetic rotation is expected to occur in the sam e regions. To date, m ost o f the antim agnetic rotations have been observed in the A ~ 110 mass region, in particular in the Cd and Pd isotopes including 105Cd [5], 106Cd [6], U)7Cd [7], 108Cd [8,9], 109Cd [10], ll0Cd [11], and l04Pd [12], Theoretically, both m agnetic and antim agnetic rotations were first proposed in the fram ew ork o f the tilted axis cranking "jpeng@bnu.edu.cn (TAC) model [1,2,13]. They w ere investigated later in the classical particle-plus-rotor m odel [14] as well.…”

Section: Introductionmentioning

confidence: 99%

Magnetic and antimagnetic rotation inCd110within tilted axis cranking relativistic mean-field theory

Peng

Zhao

2015

Phys. Rev. C

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The self-consistent tilted axis cranking relativistic mean-field (TAC-RMF) theory based on a point-coupling interaction is applied to investigate the observed magnetic and antimagnetic rotations in the nucleus ll0Cd. The energy spectra, the relation between the spin and the rotational frequency, the deformation parameters, and the reduced M l and E2 transition probabilities are studied with the various configurations. It is found that the configuration has to be changed to reproduce the energy spectra and the relations between the spin and the rotational frequency for both the magnetic and antimagnetic rotational bands. The shears mechanism for the magnetic rotation and the two-shears-like mechanism for the antimagnetic rotation are examined by investigating the orientation of the neutron and proton angular momenta. The calculated electromagnetic transitions B(M 1) and B(E2) are in reasonable agreement with the data, and their tendencies are coincident with the typical characteristics of the magnetic and antimagnetic rotations.

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Antimagnetic rotation in104Pd

Cited by 29 publications

References 25 publications

Band structures in Pd101

Band structures in Pd101

Antimagnetic rotation and sudden change of electric quadrupole transition strength in 143 Eu

Magnetic and antimagnetic rotation inCd110within tilted axis cranking relativistic mean-field theory

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