g-Factor of the high-spin isomer in 149Dy and a multi-quasiparticle configuration caused by the N=82 core excitations

Hiroshi Watanabe; H. Ueno; D. Kameda; W. Sato; A. Yoshimi; H. Miyoshi; T. Kishida; Y. Kobayashi; A. Odahara; Y. Gono; K. Asahi

doi:10.1016/j.nuclphysa.2003.09.007

g-Factor of the high-spin isomer in ¹⁴⁹Dy and a multi-quasiparticle configuration caused by the N=82 core excitations

Hiroshi Watanabe, H. Ueno, D. Kameda, W. Sato, A. Yoshimi, H. Miyoshi, T. Kishida, Y. Kobayashi, A. Odahara, Y. Gono, K. Asahi

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

9 Scopus citations

Abstract

The nuclear g-factor of the T_1/2 = 28 ns high-spin isomer in ¹⁴⁹Dy has been measured using the γ-ray time-differential perturbed angular distribution (TDPAD) technique with a pulsed beam of ¹³²Xe. The experimental value g=+0.41(6) is in good agreement with a fully aligned multi-quasiparticle configuration π(h²_11/2)⊗ν (f_7/2h_9/2i_13/2(d^-2 _3/2)₀). This result indicates that only neutron particle-hole excitations across the N=82 shell-closure occur at this isomeric state.

Original language	English
Pages (from-to)	365-378
Number of pages	14
Journal	Nuclear Physics A
Volume	728
Issue number	3-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2003.09.007
State	Published - 15 Dec 2003
Externally published	Yes

Keywords

Dy deduced high-spin isomer g factor, configuration
Measured delayed E, I (θ,H,t)
Nuclear reactions Mg(Xe, xn)Dy, E=7.0 MeV/nucleon
Time-differential perturbed angular distribution method, deformed independent particle model analysis

Access to Document

10.1016/j.nuclphysa.2003.09.007

Cite this

@article{574999a019124d37a11748b0e77f0959,

title = "g-Factor of the high-spin isomer in 149Dy and a multi-quasiparticle configuration caused by the N=82 core excitations",

abstract = "The nuclear g-factor of the T1/2 = 28 ns high-spin isomer in 149Dy has been measured using the γ-ray time-differential perturbed angular distribution (TDPAD) technique with a pulsed beam of 132Xe. The experimental value g=+0.41(6) is in good agreement with a fully aligned multi-quasiparticle configuration π(h211/2)⊗ν (f7/2h9/2i13/2(d-2 3/2)0). This result indicates that only neutron particle-hole excitations across the N=82 shell-closure occur at this isomeric state.",

keywords = "Dy deduced high-spin isomer g factor, configuration, Measured delayed E, I (θ,H,t), Nuclear reactions Mg(Xe, xn)Dy, E=7.0 MeV/nucleon, Time-differential perturbed angular distribution method, deformed independent particle model analysis",

author = "Hiroshi Watanabe and H. Ueno and D. Kameda and W. Sato and A. Yoshimi and H. Miyoshi and T. Kishida and Y. Kobayashi and A. Odahara and Y. Gono and K. Asahi",

note = "Funding Information: We wish to acknowledge staff members who belong to the RIKEN Accelerator Research Facility (RARF) for the provision of high quality beams during our experiment. One of the authors, H.W., thanks Dr. T. Fukuchi at Kyushu University for significant suggestions about the preceding spectroscopic study of 149Dy. This work was mainly supported by the Applied Nuclear Physics Laboratory at RIKEN.",

year = "2003",

month = dec,

day = "15",

doi = "10.1016/j.nuclphysa.2003.09.007",

language = "English",

volume = "728",

pages = "365--378",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "3-4",

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TY - JOUR

T1 - g-Factor of the high-spin isomer in 149Dy and a multi-quasiparticle configuration caused by the N=82 core excitations

AU - Watanabe, Hiroshi

AU - Ueno, H.

AU - Kameda, D.

AU - Sato, W.

AU - Yoshimi, A.

AU - Miyoshi, H.

AU - Kishida, T.

AU - Kobayashi, Y.

AU - Odahara, A.

AU - Gono, Y.

AU - Asahi, K.

N1 - Funding Information: We wish to acknowledge staff members who belong to the RIKEN Accelerator Research Facility (RARF) for the provision of high quality beams during our experiment. One of the authors, H.W., thanks Dr. T. Fukuchi at Kyushu University for significant suggestions about the preceding spectroscopic study of 149Dy. This work was mainly supported by the Applied Nuclear Physics Laboratory at RIKEN.

PY - 2003/12/15

Y1 - 2003/12/15

N2 - The nuclear g-factor of the T1/2 = 28 ns high-spin isomer in 149Dy has been measured using the γ-ray time-differential perturbed angular distribution (TDPAD) technique with a pulsed beam of 132Xe. The experimental value g=+0.41(6) is in good agreement with a fully aligned multi-quasiparticle configuration π(h211/2)⊗ν (f7/2h9/2i13/2(d-2 3/2)0). This result indicates that only neutron particle-hole excitations across the N=82 shell-closure occur at this isomeric state.

AB - The nuclear g-factor of the T1/2 = 28 ns high-spin isomer in 149Dy has been measured using the γ-ray time-differential perturbed angular distribution (TDPAD) technique with a pulsed beam of 132Xe. The experimental value g=+0.41(6) is in good agreement with a fully aligned multi-quasiparticle configuration π(h211/2)⊗ν (f7/2h9/2i13/2(d-2 3/2)0). This result indicates that only neutron particle-hole excitations across the N=82 shell-closure occur at this isomeric state.

KW - Dy deduced high-spin isomer g factor, configuration

KW - Measured delayed E, I (θ,H,t)

KW - Nuclear reactions Mg(Xe, xn)Dy, E=7.0 MeV/nucleon

KW - Time-differential perturbed angular distribution method, deformed independent particle model analysis

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U2 - 10.1016/j.nuclphysa.2003.09.007

DO - 10.1016/j.nuclphysa.2003.09.007

M3 - Article

AN - SCOPUS:0142231886

SN - 0375-9474

VL - 728

SP - 365

EP - 378

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 3-4