Multiple excitation modes in 163Hf

Rachita Yadav; J.C. Ma; J.C. Marsh; Q. A. Ijaz; R. V. F. Janssens; MP Carpenter; C.R. Hoffman; T Lauritsen; S. Zhu; F.G. Kondev; G. Gürdal; Gudrun Bertram Hagemann; D.J. Hartley; L. L. Riedinger; S. Mukhopadhyay

doi:10.1103/physrevc.90.054325

Multiple excitation modes in ¹⁶³Hf

Rachita Yadav, J.C. Ma, J.C. Marsh, Q. A. Ijaz, R. V. F. Janssens, MP Carpenter, C.R. Hoffman, T Lauritsen, S. Zhu, F.G. Kondev, G. Gürdal, Gudrun Bertram Hagemann, D.J. Hartley, L. L. Riedinger, S. Mukhopadhyay

Experimental Particle Physics

1 Citation (Scopus)

Abstract

Excited states of Hf163 were populated using the Zr94(Ge74,5n) reaction and the decay γ rays were measured with the Gammasphere spectrometer. Two previously known bands were extended to higher spins, and nine new bands were identified. In addition to bands associated with three- and five-quasiparticle configurations, two γ−vibrational bands coupled to the i13/2 excitation were also observed. The lowest level of a newly identified, negative-parity band is proposed to be the ground state of the nucleus. A systematic delay of the high-spin proton crossing frequency with increasing quadrupole deformation from Hf162 to Hf172 was established. Extensive band searches failed to reveal a triaxial, strongly deformed structure in Hf163 similar to the one observed in several nuclei around A∼165.

Original language	English
Article number	054325
Journal	Physical Review C (Nuclear Physics)
Volume	90
ISSN	0556-2813
DOIs	https://doi.org/10.1103/physrevc.90.054325
Publication status	Published - 19 Nov 2014

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@article{3c269544d13d4b7a9b60be9d6f2a3bf6,

title = "Multiple excitation modes in 163Hf",

abstract = "Excited states of Hf163 were populated using the Zr94(Ge74,5n) reaction and the decay γ rays were measured with the Gammasphere spectrometer. Two previously known bands were extended to higher spins, and nine new bands were identified. In addition to bands associated with three- and five-quasiparticle configurations, two γ−vibrational bands coupled to the i13/2 excitation were also observed. The lowest level of a newly identified, negative-parity band is proposed to be the ground state of the nucleus. A systematic delay of the high-spin proton crossing frequency with increasing quadrupole deformation from Hf162 to Hf172 was established. Extensive band searches failed to reveal a triaxial, strongly deformed structure in Hf163 similar to the one observed in several nuclei around A∼165.",

author = "Rachita Yadav and J.C. Ma and J.C. Marsh and Ijaz, {Q. A.} and Janssens, {R. V. F.} and MP Carpenter and C.R. Hoffman and T Lauritsen and S. Zhu and F.G. Kondev and G. G{\"u}rdal and Hagemann, {Gudrun Bertram} and D.J. Hartley and Riedinger, {L. L.} and S. Mukhopadhyay",

year = "2014",

month = nov,

day = "19",

doi = "10.1103/physrevc.90.054325",

language = "English",

volume = "90",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

}

TY - JOUR

T1 - Multiple excitation modes in 163Hf

AU - Yadav, Rachita

AU - Ma, J.C.

AU - Marsh, J.C.

AU - Ijaz, Q. A.

AU - Janssens, R. V. F.

AU - Carpenter, MP

AU - Hoffman, C.R.

AU - Lauritsen, T

AU - Zhu, S.

AU - Kondev, F.G.

AU - Gürdal, G.

AU - Hagemann, Gudrun Bertram

AU - Hartley, D.J.

AU - Riedinger, L. L.

AU - Mukhopadhyay, S.

PY - 2014/11/19

Y1 - 2014/11/19

N2 - Excited states of Hf163 were populated using the Zr94(Ge74,5n) reaction and the decay γ rays were measured with the Gammasphere spectrometer. Two previously known bands were extended to higher spins, and nine new bands were identified. In addition to bands associated with three- and five-quasiparticle configurations, two γ−vibrational bands coupled to the i13/2 excitation were also observed. The lowest level of a newly identified, negative-parity band is proposed to be the ground state of the nucleus. A systematic delay of the high-spin proton crossing frequency with increasing quadrupole deformation from Hf162 to Hf172 was established. Extensive band searches failed to reveal a triaxial, strongly deformed structure in Hf163 similar to the one observed in several nuclei around A∼165.

AB - Excited states of Hf163 were populated using the Zr94(Ge74,5n) reaction and the decay γ rays were measured with the Gammasphere spectrometer. Two previously known bands were extended to higher spins, and nine new bands were identified. In addition to bands associated with three- and five-quasiparticle configurations, two γ−vibrational bands coupled to the i13/2 excitation were also observed. The lowest level of a newly identified, negative-parity band is proposed to be the ground state of the nucleus. A systematic delay of the high-spin proton crossing frequency with increasing quadrupole deformation from Hf162 to Hf172 was established. Extensive band searches failed to reveal a triaxial, strongly deformed structure in Hf163 similar to the one observed in several nuclei around A∼165.

U2 - 10.1103/physrevc.90.054325

DO - 10.1103/physrevc.90.054325

M3 - Journal article

SN - 2469-9985

VL - 90

JO - Physical Review C

JF - Physical Review C

M1 - 054325

ER -

Multiple excitation modes in 163Hf

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Multiple excitation modes in ¹⁶³Hf