Effect of a triaxial nuclear shape on proton tunneling: The decay and structure of Tm145

D. Seweryniak; B. Blank; M. P. Carpenter; C. N. Davids; T. Davinson; S. J. Freeman; N. Hammond; N. Hoteling; R. V F Janssens; T. L. Khoo; Z. Liu; G. Mukherjee; A. Robinson; C. Scholey; S. Sinha; J. Shergur; K. Starosta; W. B. Walters; A. Woehr; P. J. Woods

doi:10.1103/PhysRevLett.99.082502

Effect of a triaxial nuclear shape on proton tunneling: The decay and structure of Tm145

D. Seweryniak, B. Blank, M. P. Carpenter, C. N. Davids, T. Davinson, S. J. Freeman, N. Hammond, N. Hoteling, R. V F Janssens, T. L. Khoo, Z. Liu, G. Mukherjee, A. Robinson, C. Scholey, S. Sinha, J. Shergur, K. Starosta, W. B. Walters, A. Woehr, P. J. Woods

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Abstract

Gamma rays deexciting states in the proton emitter Tm145 were observed using the recoil-decay tagging method. The Tm145 ground-state rotational band was found to exhibit the properties expected for an h11/2 proton decoupled band. In addition, coincidences between protons feeding the 2+ state in Er144 and the 2+→0+ γ-ray transition were detected, the first measurement of this kind, leading to a more precise value for the 2+ excitation energy of 329(1) keV. Calculations with the particle-rotor model and the core quasiparticle coupling model indicate that the properties of the πh11/2 band and the proton-decay rates in Tm145 are consistent with the presence of triaxiality with an asymmetry parameter γ≈20°. © 2007 The American Physical Society.

Original language	English
Article number	082502
Journal	Physical Review Letters
Volume	99
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.99.082502
Publication status	Published - 25 Aug 2007

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Seweryniak, D., Blank, B., Carpenter, M. P., Davids, C. N., Davinson, T., Freeman, S. J., Hammond, N., Hoteling, N., Janssens, R. V. F., Khoo, T. L., Liu, Z., Mukherjee, G., Robinson, A., Scholey, C., Sinha, S., Shergur, J., Starosta, K., Walters, W. B., Woehr, A., & Woods, P. J. (2007). Effect of a triaxial nuclear shape on proton tunneling: The decay and structure of Tm145. Physical Review Letters, 99(8), Article 082502. https://doi.org/10.1103/PhysRevLett.99.082502

@article{f9beb85bb8794d63937191f21b5601d6,

title = "Effect of a triaxial nuclear shape on proton tunneling: The decay and structure of Tm145",

abstract = "Gamma rays deexciting states in the proton emitter Tm145 were observed using the recoil-decay tagging method. The Tm145 ground-state rotational band was found to exhibit the properties expected for an h11/2 proton decoupled band. In addition, coincidences between protons feeding the 2+ state in Er144 and the 2+→0+ γ-ray transition were detected, the first measurement of this kind, leading to a more precise value for the 2+ excitation energy of 329(1) keV. Calculations with the particle-rotor model and the core quasiparticle coupling model indicate that the properties of the πh11/2 band and the proton-decay rates in Tm145 are consistent with the presence of triaxiality with an asymmetry parameter γ≈20°. {\textcopyright} 2007 The American Physical Society.",

author = "D. Seweryniak and B. Blank and Carpenter, {M. P.} and Davids, {C. N.} and T. Davinson and Freeman, {S. J.} and N. Hammond and N. Hoteling and Janssens, {R. V F} and Khoo, {T. L.} and Z. Liu and G. Mukherjee and A. Robinson and C. Scholey and S. Sinha and J. Shergur and K. Starosta and Walters, {W. B.} and A. Woehr and Woods, {P. J.}",

note = "Seweryniak, D. Blank, B. Carpenter, M. P. Davids, C. N. Davinson, T. Freeman, S. J. Hammond, N. Hoteling, N. Janssens, R. V. F. Khoo, T. L. Liu, Z. Mukherjee, G. Robinson, A. Scholey, C. Sinha, S. Shergur, J. Starosta, K. Walters, W. B. Woehr, A. Woods, P. J.",

year = "2007",

month = aug,

day = "25",

doi = "10.1103/PhysRevLett.99.082502",

language = "English",

volume = "99",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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Seweryniak, D, Blank, B, Carpenter, MP, Davids, CN, Davinson, T, Freeman, SJ, Hammond, N, Hoteling, N, Janssens, RVF, Khoo, TL, Liu, Z, Mukherjee, G, Robinson, A, Scholey, C, Sinha, S, Shergur, J, Starosta, K, Walters, WB, Woehr, A & Woods, PJ 2007, 'Effect of a triaxial nuclear shape on proton tunneling: The decay and structure of Tm145', Physical Review Letters, vol. 99, no. 8, 082502. https://doi.org/10.1103/PhysRevLett.99.082502

TY - JOUR

T1 - Effect of a triaxial nuclear shape on proton tunneling: The decay and structure of Tm145

AU - Seweryniak, D.

AU - Blank, B.

AU - Carpenter, M. P.

AU - Davids, C. N.

AU - Davinson, T.

AU - Freeman, S. J.

AU - Hammond, N.

AU - Hoteling, N.

AU - Janssens, R. V F

AU - Khoo, T. L.

AU - Liu, Z.

AU - Mukherjee, G.

AU - Robinson, A.

AU - Scholey, C.

AU - Sinha, S.

AU - Shergur, J.

AU - Starosta, K.

AU - Walters, W. B.

AU - Woehr, A.

AU - Woods, P. J.

N1 - Seweryniak, D. Blank, B. Carpenter, M. P. Davids, C. N. Davinson, T. Freeman, S. J. Hammond, N. Hoteling, N. Janssens, R. V. F. Khoo, T. L. Liu, Z. Mukherjee, G. Robinson, A. Scholey, C. Sinha, S. Shergur, J. Starosta, K. Walters, W. B. Woehr, A. Woods, P. J.

PY - 2007/8/25

Y1 - 2007/8/25

N2 - Gamma rays deexciting states in the proton emitter Tm145 were observed using the recoil-decay tagging method. The Tm145 ground-state rotational band was found to exhibit the properties expected for an h11/2 proton decoupled band. In addition, coincidences between protons feeding the 2+ state in Er144 and the 2+→0+ γ-ray transition were detected, the first measurement of this kind, leading to a more precise value for the 2+ excitation energy of 329(1) keV. Calculations with the particle-rotor model and the core quasiparticle coupling model indicate that the properties of the πh11/2 band and the proton-decay rates in Tm145 are consistent with the presence of triaxiality with an asymmetry parameter γ≈20°. © 2007 The American Physical Society.

AB - Gamma rays deexciting states in the proton emitter Tm145 were observed using the recoil-decay tagging method. The Tm145 ground-state rotational band was found to exhibit the properties expected for an h11/2 proton decoupled band. In addition, coincidences between protons feeding the 2+ state in Er144 and the 2+→0+ γ-ray transition were detected, the first measurement of this kind, leading to a more precise value for the 2+ excitation energy of 329(1) keV. Calculations with the particle-rotor model and the core quasiparticle coupling model indicate that the properties of the πh11/2 band and the proton-decay rates in Tm145 are consistent with the presence of triaxiality with an asymmetry parameter γ≈20°. © 2007 The American Physical Society.

U2 - 10.1103/PhysRevLett.99.082502

DO - 10.1103/PhysRevLett.99.082502

M3 - Article

SN - 0031-9007

VL - 99

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 082502

ER -

Effect of a triaxial nuclear shape on proton tunneling: The decay and structure of Tm145

Abstract

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