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Chinese Physics C> 2003, Vol. 27> Issue(10) : 884-887 

Study of Level Structure in 146Tb

  •  Institue of Modern Physics,CAS,Lanzhou 730000,China2 Japan Atomic Energy Research Institute,Tokai,Ibaraki 319-1195,Japan3 Chiba University,Inage-ku,Chiba 263-8512,Japan4 Chiba Institute of Technology,Narashino,Chiba 275-0023,Japan

  • The level structure of high-spin states of doubly odd nucleus l46Tb has been studied via the 118Sn (32S, 1p3n) Tb reaction using techniques of in-beam y-ray spectroscopy. Measurements of r-ray excitation functions, y-ray anisotropies, X-r and r-r-t coincidences were performed with 12 BGO(AC)HPGe detectors. Based on the gated spectra, r-r coincidence relationships, intensity balances and cross-over transitions, the level scheme in 146Tb has been extended up to an excitation energy of 8390 keV, and 41 new 7-rays are added into the level scheme. The spins for the new established levels have been assigned according to the results of the measured 7-ray anisotropies. The levels in 146Tb are interpreted qualitatively by coupling a h11/2 proton to a h11/2 neutron hole and h11/2 υ h11/2－1 to the excited states in 146Gd core.
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    [1] Broda R, Chung Y H, Daly P J et al. Z. Phys., 1984, A316: 1252 Collatz R, Amzal N, Mélliani Z et al. Z. Phys., 1997, A359: 1133 ZHENG Yong, ZHOU Xiao–Hong, LIU Min–Liang et al. HEP NP, 2002, 26(4) : 354(in Chinese)(郑勇,周小红,柳敏良等.高能物理与核物理,2002,26(4) :354)4 Broda R, Daly P J, Mcneill J H et al. Z. Phys., 1989, A334: 115 Sugawara M, Mitarai S, Kusakari H et al. Nucl. Phys., 2001, A656: 296 Piiparinen M, Atac A, Blomqvist J et al. Nucl. Phys., 1996, A605: 191 7 Sferrazza M, Cardona M A, Bazzacco D et al. Z. Phys., 1996, A354: 157 8 Schumacher C, Brentano P von, Dewald A et al. Z. Phys., 1995, A352: 161 9 Nolte E, Gui S Z, Colombo G et al. Z. Phys., 1982, A306: 22310 McNeill J, Broda R, Chung Y H et al. Z. Phys., 1986, A325: 27 11 Kleinheinz P, Lunardi S, Ogawa M et al. Z. Phys., 1978, A284: 351

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XIE Cheng-Ying, ZHOU Xiao-Hong, ZHENG Yong, ZHANG Yu-Hu, LIU Zhong, PAN Qiang-Yan and GAN Zai-Guo. Study of Level Structure in 146Tb[J]. Chinese Physics C, 2003, 27(10): 884-887.
XIE Cheng-Ying, ZHOU Xiao-Hong, ZHENG Yong, ZHANG Yu-Hu, LIU Zhong, PAN Qiang-Yan and GAN Zai-Guo. Study of Level Structure in 146Tb[J]. Chinese Physics C, 2003, 27(10): 884-887. shu
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Received: 2003-01-07
Revised: 1900-01-01
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Study of Level Structure in 146Tb

    Corresponding author: ZHOU Xiao-Hong,
  • Institue of Modern Physics,CAS,Lanzhou 730000,China2 Japan Atomic Energy Research Institute,Tokai,Ibaraki 319-1195,Japan3 Chiba University,Inage-ku,Chiba 263-8512,Japan4 Chiba Institute of Technology,Narashino,Chiba 275-0023,Japan
  • Received Date: 2003-01-07
  • Accepted Date: 1900-01-01
  • Available Online: 2003-10-05

Abstract: The level structure of high-spin states of doubly odd nucleus l46Tb has been studied via the 118Sn (32S, 1p3n) Tb reaction using techniques of in-beam y-ray spectroscopy. Measurements of r-ray excitation functions, y-ray anisotropies, X-r and r-r-t coincidences were performed with 12 BGO(AC)HPGe detectors. Based on the gated spectra, r-r coincidence relationships, intensity balances and cross-over transitions, the level scheme in 146Tb has been extended up to an excitation energy of 8390 keV, and 41 new 7-rays are added into the level scheme. The spins for the new established levels have been assigned according to the results of the measured 7-ray anisotropies. The levels in 146Tb are interpreted qualitatively by coupling a h11/2 proton to a h11/2 neutron hole and h11/2 υ h11/2－1 to the excited states in 146Gd core.

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