High-spin states in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Pd</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>107</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Pd</mml:mi></mml:mrow><mml:mprescripts /><mml:m

Pohl, K. R.; Regan, P. H.; Bush, J. E.; Raines, P.; Balamuth, D. P.; Ward, D. R.; Galindo-Uribarri, A.; Vp, Janzen; Mullins, S. M.; Pilotte, S.

doi:10.1103/physrevc.53.2682

Cited by 36 publications

(30 citation statements)

References 38 publications

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“…An attempt to search for it in our data was unsuccessful, probably due to the low statistics. [11] explained as a result of its smaller deformation [11,12]. The crossing in the odd-mass isotopes is delayed with respect to the first crossing (≈ 0.35 MeV) in the neighboring even-mass Pd isotopes, explained to be due to a blocking effect caused by the h 11/2 neutron.…”

Section: Discussionmentioning

confidence: 99%

Observation of positive-parity bands in109Pd and111Pd: Enhancedγsoftness

et al. 2012

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The neutron-rich nuclei 109 Pd and 111 Pd were produced as fission fragments following the 30 Si + 168 Er reaction at 142 MeV. Using the identification based on the coincidences with the complementary fission fragments, the only positive-parity bands observed so far in 109 Pd and 111 Pd emerged from this work. A band, built on top of the 5/2 + ground state exhibiting ∆I = 1 energy-level staggering, was observed in each of these nuclei. Both nuclei of interest, 109 Pd and 111 Pd, are suggested to lie in the transitional region of Pd isotopes of maximum γ-softness. The ground states of both nuclei are predicted by TRS calculations to be extremely γ-soft with shallow triaxial minima. The first crossing in the new bands is proposed to be due to an alignment of h 2 11/2 neutrons.

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Section: Discussionmentioning

confidence: 99%

Observation of positive-parity bands in109Pd and111Pd: Enhancedγsoftness

et al. 2012

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“…It is to be noted that a sharp backbend is observed in 109 Ag at I π = 23/2 + which is attributed to the alignment of the h 11/2 neutrons. This assignment is corroborated by the Crank Shell Model calculation which predicts aligned angular momentum gain of ∼10h for neutron EF crossing [28]. In order to investigate further, the B(E2) and the B(M1) transition rates were calculated from the experimentally measured level lifetimes (Fig.…”

Section: Ag Isotopes: 109110 Agmentioning

confidence: 92%

Interplay between tilted and principal axis rotation

Datta¹,

Roy²,

Chattopadhyay³

2014

AIP Conference Proceedings

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Abstract. At IUAC-INGA, our group has studied four neutron rich nuclei of mass-110 region, namely 109,110 Ag and 108,110 Cd. These nuclei provide the unique platform to study the interplay between Tilted and Principal axis rotation since these are moderately deformed and at the same time, shears structures are present at higher spins. The salient features of the high spin behaviors of these nuclei will be discussed which are the signatures of this interplay.

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“…Single-neutron transfer [21,[24][25][26][27][28][29] and high spin studies [41][42][43][44][45][46][47][48] indicate that one of these levels consistently displays a νg 7/2 single-particle character, while the other can be described as a νd 5/2 ⊗ 2 + 1 configuration. This distinction is based on the observed spectroscopic strengths (Table II) and band structures connected to them (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the πg 9/2 -νg 7/2 interaction had been proposed early on by Federman and Pittel to be responsible for the onset of deformation in the Zr and Mo isotopes [54]. A shape change to large deformation is also evident in the band structure of the odd-mass Pd isotopes [41][42][43][44][45][46][47][48] (Fig. 5) and suggested by B(E2) systematics [21,[55][56][57][58][59].…”

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confidence: 93%

New lifetime measurements inPd109and the onset of deformation atN=60

et al. 2015

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Several new sub-nanosecond lifetimes were measured in 109 Pd using the fast-timing βγγ(t) method. Fission fragments of the A=109 mass chain were produced by bombarding natural uranium with 30 MeV protons at the Jyväskylä Ion Guide Isotope Separator On-Line (IGISOL) facility. Lifetimes were obtained for excited states in 109 Pd populated following β decay of 109 Rh. The new lifetimes provide some insight into the evolution of nuclear structure in this mass region. In particular, the distinct structure of the two low-lying 7/2 + states occurring systematically across the Pd isotopic chain is supported by the new lifetime measurements. The available nuclear data indicate a sudden increase in deformation at N =60 which is related to the strong p-n interaction between πg 9/2 and νg 7/2 valence nucleons expected in this region.

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High-spin states inPd107,Pd

Cited by 36 publications

References 38 publications

Observation of positive-parity bands in109Pd and111Pd: Enhancedγsoftness

Observation of positive-parity bands in109Pd and111Pd: Enhancedγsoftness

Interplay between tilted and principal axis rotation

New lifetime measurements inPd109and the onset of deformation atN=60

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