Wobbling excitations in strongly deformed Hf nuclei?

D. J. Hartley; M. K. Djongolov; L. L. Riedinger; G. B. Hagemann; R. V.F. Janssens; F. G. Kondev; E. F. Moore; M. A. Riley; A. Aguilar; C. R. Bingham; D. B. Campbell; M. P. Carpenter; P. Chowdhury; M. Cromaz; D. M. Cullen; M. Danchev; G. D. Dracoulis; P. Fallon; J. Goon; R. A. Kaye; T. L. Khoo; R. W. Laird; T. Lauritsen; A. O. MacChiavelli; B. McClain; G. Mukherjee; E. Ngijoi-Yogo; H. I. Park; G. Sletten; S. K. Tandel; P. M. Walker; Jing Ye Zhang

doi:10.1016/j.physletb.2005.01.007

Wobbling excitations in strongly deformed Hf nuclei?

D. J. Hartley^*, M. K. Djongolov, L. L. Riedinger, G. B. Hagemann, R. V.F. Janssens, F. G. Kondev, E. F. Moore, M. A. Riley, A. Aguilar, C. R. Bingham, D. B. Campbell, M. P. Carpenter, P. Chowdhury, M. Cromaz, D. M. Cullen, M. Danchev, G. D. Dracoulis, P. Fallon, J. Goon, R. A. KayeT. L. Khoo, R. W. Laird, T. Lauritsen, A. O. MacChiavelli, B. McClain, G. Mukherjee, E. Ngijoi-Yogo, H. I. Park, G. Sletten, S. K. Tandel, P. M. Walker, Jing Ye Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

Two Gammasphere experiments have been performed in order to establish the possible triaxial nature of strongly deformed (SD) bands in ¹⁷⁴Hf. A lifetime measurement, using the Doppler-shift attenuation method, confirmed the large deformation of the four previously observed bands in this nucleus with transition quadrupole moments ranging from 12.6 to 13.8 b. These values are significantly larger than those predicted for triaxial minima by ultimate cranker (UC) calculations. A thin-target, high-statistics experiment was also carried out to search for linking transitions between the SD bands. No such transitions, which represent an experimental signature for wobbling modes, were observed. Four additional SD bands were found in ¹⁷⁴Hf together with a single SD band in ¹⁷³Hf. These results indicate that the strongly deformed sequences of N≈102 Hf isotopes behave differently than the triaxial strongly deformed (TSD) bands found in Lu nuclei near N=92. The interpretation of these bands in terms of possible stable triaxial deformation is confronted with the experimental findings and UC predictions.

Original language	English
Pages (from-to)	31-38
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	608
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2005.01.007
Publication status	Published - 17 Feb 2005

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10.1016/j.physletb.2005.01.007

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Hartley, D. J., Djongolov, M. K., Riedinger, L. L., Hagemann, G. B., Janssens, R. V. F., Kondev, F. G., Moore, E. F., Riley, M. A., Aguilar, A., Bingham, C. R., Campbell, D. B., Carpenter, M. P., Chowdhury, P., Cromaz, M., Cullen, D. M., Danchev, M., Dracoulis, G. D., Fallon, P., Goon, J., ... Zhang, J. Y. (2005). Wobbling excitations in strongly deformed Hf nuclei? Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 608(1-2), 31-38. https://doi.org/10.1016/j.physletb.2005.01.007

@article{d29832970d614e3192d08504e93bb516,

title = "Wobbling excitations in strongly deformed Hf nuclei?",

abstract = "Two Gammasphere experiments have been performed in order to establish the possible triaxial nature of strongly deformed (SD) bands in 174Hf. A lifetime measurement, using the Doppler-shift attenuation method, confirmed the large deformation of the four previously observed bands in this nucleus with transition quadrupole moments ranging from 12.6 to 13.8 b. These values are significantly larger than those predicted for triaxial minima by ultimate cranker (UC) calculations. A thin-target, high-statistics experiment was also carried out to search for linking transitions between the SD bands. No such transitions, which represent an experimental signature for wobbling modes, were observed. Four additional SD bands were found in 174Hf together with a single SD band in 173Hf. These results indicate that the strongly deformed sequences of N≈102 Hf isotopes behave differently than the triaxial strongly deformed (TSD) bands found in Lu nuclei near N=92. The interpretation of these bands in terms of possible stable triaxial deformation is confronted with the experimental findings and UC predictions.",

author = "Hartley, {D. J.} and Djongolov, {M. K.} and Riedinger, {L. L.} and Hagemann, {G. B.} and Janssens, {R. V.F.} and Kondev, {F. G.} and Moore, {E. F.} and Riley, {M. A.} and A. Aguilar and Bingham, {C. R.} and Campbell, {D. B.} and Carpenter, {M. P.} and P. Chowdhury and M. Cromaz and Cullen, {D. M.} and M. Danchev and Dracoulis, {G. D.} and P. Fallon and J. Goon and Kaye, {R. A.} and Khoo, {T. L.} and Laird, {R. W.} and T. Lauritsen and MacChiavelli, {A. O.} and B. McClain and G. Mukherjee and E. Ngijoi-Yogo and Park, {H. I.} and G. Sletten and Tandel, {S. K.} and Walker, {P. M.} and Zhang, {Jing Ye}",

year = "2005",

month = feb,

day = "17",

doi = "10.1016/j.physletb.2005.01.007",

language = "English",

volume = "608",

pages = "31--38",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

Hartley, DJ, Djongolov, MK, Riedinger, LL, Hagemann, GB, Janssens, RVF, Kondev, FG, Moore, EF, Riley, MA, Aguilar, A, Bingham, CR, Campbell, DB, Carpenter, MP, Chowdhury, P, Cromaz, M, Cullen, DM, Danchev, M, Dracoulis, GD, Fallon, P, Goon, J, Kaye, RA, Khoo, TL, Laird, RW, Lauritsen, T, MacChiavelli, AO, McClain, B, Mukherjee, G, Ngijoi-Yogo, E, Park, HI, Sletten, G, Tandel, SK, Walker, PM & Zhang, JY 2005, 'Wobbling excitations in strongly deformed Hf nuclei?', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 608, no. 1-2, pp. 31-38. https://doi.org/10.1016/j.physletb.2005.01.007