High-spin terminating states in the N=88 Ho 155 and Er 156 isotones

J. M. Rees; E. S. Paul; J. Simpson; M. A. Riley; A. D. Ayangeakaa; M. P. Carpenter; C. J. Chiara; U. Garg; P. Hampson; D. J. Hartley; C. R. Hoffman; R. V.F. Janssens; F. G. Kondev; T. Lauritsen; P. J.R. Mason; J. Matta; S. L. Miller; P. J. Nolan; J. Ollier; M. Petri; D. C. Radford; J. P. Revill; X. Wang; S. Zhu; J. Gellanki; I. Ragnarsson

doi:10.1103/PhysRevC.91.054301

High-spin terminating states in the N=88 Ho 155 and Er 156 isotones

J. M. Rees, E. S. Paul, J. Simpson, M. A. Riley, A. D. Ayangeakaa, M. P. Carpenter, C. J. Chiara, U. Garg, P. Hampson, D. J. Hartley, C. R. Hoffman, R. V.F. Janssens, F. G. Kondev, T. Lauritsen, P. J.R. Mason, J. Matta, S. L. Miller, P. J. Nolan, J. Ollier, M. PetriD. C. Radford, J. P. Revill, X. Wang, S. Zhu, J. Gellanki, I. Ragnarsson

Physics Division

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Abstract

The Sn124(Cl37,6nγ) fusion-evaporation reaction at a bombarding energy of 180 MeV has been used to significantly extend the excitation level scheme of 67155Ho88. The collective rotational behavior of this nucleus breaks down above spin I∼30 and a fully aligned noncollective (band terminating) state has been identified at Iπ=79/2-. Comparison with cranked Nilsson-Strutinsky calculations also provides evidence for core-excited noncollective states at Iπ=87/2- and (89/2+) involving particle-hole excitations across the Z=64 shell gap. A similar core-excited state in 68156Er88 at Iπ=(46+) is also presented.

Original language	English
Article number	054301
Journal	Physical Review C - Nuclear Physics
Volume	91
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.91.054301
State	Published - May 5 2015

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Rees, J. M., Paul, E. S., Simpson, J., Riley, M. A., Ayangeakaa, A. D., Carpenter, M. P., Chiara, C. J., Garg, U., Hampson, P., Hartley, D. J., Hoffman, C. R., Janssens, R. V. F., Kondev, F. G., Lauritsen, T., Mason, P. J. R., Matta, J., Miller, S. L., Nolan, P. J., Ollier, J., ... Ragnarsson, I. (2015). High-spin terminating states in the N=88 Ho 155 and Er 156 isotones. Physical Review C - Nuclear Physics, 91(5), Article 054301. https://doi.org/10.1103/PhysRevC.91.054301

@article{9982c8d6de0b45c5a1f77f4b7036f531,

title = "High-spin terminating states in the N=88 Ho 155 and Er 156 isotones",

abstract = "The Sn124(Cl37,6nγ) fusion-evaporation reaction at a bombarding energy of 180 MeV has been used to significantly extend the excitation level scheme of 67155Ho88. The collective rotational behavior of this nucleus breaks down above spin I∼30 and a fully aligned noncollective (band terminating) state has been identified at Iπ=79/2-. Comparison with cranked Nilsson-Strutinsky calculations also provides evidence for core-excited noncollective states at Iπ=87/2- and (89/2+) involving particle-hole excitations across the Z=64 shell gap. A similar core-excited state in 68156Er88 at Iπ=(46+) is also presented.",

author = "Rees, {J. M.} and Paul, {E. S.} and J. Simpson and Riley, {M. A.} and Ayangeakaa, {A. D.} and Carpenter, {M. P.} and Chiara, {C. J.} and U. Garg and P. Hampson and Hartley, {D. J.} and Hoffman, {C. R.} and Janssens, {R. V.F.} and Kondev, {F. G.} and T. Lauritsen and Mason, {P. J.R.} and J. Matta and Miller, {S. L.} and Nolan, {P. J.} and J. Ollier and M. Petri and Radford, {D. C.} and Revill, {J. P.} and X. Wang and S. Zhu and J. Gellanki and I. Ragnarsson",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = may,

day = "5",

doi = "10.1103/PhysRevC.91.054301",

language = "English",

volume = "91",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

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Rees, JM, Paul, ES, Simpson, J, Riley, MA, Ayangeakaa, AD, Carpenter, MP, Chiara, CJ, Garg, U, Hampson, P, Hartley, DJ, Hoffman, CR, Janssens, RVF, Kondev, FG, Lauritsen, T, Mason, PJR, Matta, J, Miller, SL, Nolan, PJ, Ollier, J, Petri, M, Radford, DC, Revill, JP, Wang, X, Zhu, S, Gellanki, J & Ragnarsson, I 2015, 'High-spin terminating states in the N=88 Ho 155 and Er 156 isotones', Physical Review C - Nuclear Physics, vol. 91, no. 5, 054301. https://doi.org/10.1103/PhysRevC.91.054301

TY - JOUR

T1 - High-spin terminating states in the N=88 Ho 155 and Er 156 isotones

AU - Rees, J. M.

AU - Paul, E. S.

AU - Simpson, J.

AU - Riley, M. A.

AU - Ayangeakaa, A. D.

AU - Carpenter, M. P.

AU - Chiara, C. J.

AU - Garg, U.

AU - Hampson, P.

AU - Hartley, D. J.

AU - Hoffman, C. R.

AU - Janssens, R. V.F.

AU - Kondev, F. G.

AU - Lauritsen, T.

AU - Mason, P. J.R.

AU - Matta, J.

AU - Miller, S. L.

AU - Nolan, P. J.

AU - Ollier, J.

AU - Petri, M.

AU - Radford, D. C.

AU - Revill, J. P.

AU - Wang, X.

AU - Zhu, S.

AU - Gellanki, J.

AU - Ragnarsson, I.

PY - 2015/5/5

Y1 - 2015/5/5

N2 - The Sn124(Cl37,6nγ) fusion-evaporation reaction at a bombarding energy of 180 MeV has been used to significantly extend the excitation level scheme of 67155Ho88. The collective rotational behavior of this nucleus breaks down above spin I∼30 and a fully aligned noncollective (band terminating) state has been identified at Iπ=79/2-. Comparison with cranked Nilsson-Strutinsky calculations also provides evidence for core-excited noncollective states at Iπ=87/2- and (89/2+) involving particle-hole excitations across the Z=64 shell gap. A similar core-excited state in 68156Er88 at Iπ=(46+) is also presented.

AB - The Sn124(Cl37,6nγ) fusion-evaporation reaction at a bombarding energy of 180 MeV has been used to significantly extend the excitation level scheme of 67155Ho88. The collective rotational behavior of this nucleus breaks down above spin I∼30 and a fully aligned noncollective (band terminating) state has been identified at Iπ=79/2-. Comparison with cranked Nilsson-Strutinsky calculations also provides evidence for core-excited noncollective states at Iπ=87/2- and (89/2+) involving particle-hole excitations across the Z=64 shell gap. A similar core-excited state in 68156Er88 at Iπ=(46+) is also presented.

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DO - 10.1103/PhysRevC.91.054301

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SN - 0556-2813

VL - 91

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 054301

ER -

High-spin terminating states in the N=88 Ho 155 and Er 156 isotones

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