Abstract.
A new high-spin isomer in 150Dy has been observed at an excitation energy of 10.3 MeV by combining the inverse-kinematic reaction induced by a pulsed beam of 132Xe and the \(\gamma\)-ray recoil-shadow technique. The half-life of this isomeric state has been determined to be \(T_{1/2} = 1.6 \pm 0.6\) ns using the conventional centroid-shift method with the 141Pr(16O, p6n)150Dy reaction at 165 MeV. The mechanism producing high-spin isomers in N = 83,84 isotones is qualitatively discussed in terms of the difference of the neutron particle-hole configuration between the high-spin isomer and the lower-lying state.
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References
J. Pedersen , Phys. Rev. Lett. 39, 990 (1977).
A. Bohr, B.R. Mottelson, Nuclear Structure, Vol. 2 (Benjamin, New York, 1975).
M.J.A. de Voigt , Rev. Mod. Phys. 55, 949 (1983) and references therein.
O. Häusser , Nucl. Phys. A 379, 287 (1982).
X.H. Zhou , Phys. Rev. C 61, 014303 (2000).
T. Murakami , Z. Phys. A 345, 123 (1993).
A. Odahara , Nucl. Phys. A 620, 363 (1997).
E. Ideguchi , Eur. Phys. J. A 6, 387 (1999).
O. Bakander , Nucl. Phys. A 389, 93 (1982).
E. Ideguchi , Z. Phys. A 352, 363 (1995).
Y. Gono , Eur. Phys. J. A 13, 5 (2002).
M.W. Drigert , Nucl. Phys. A 515, 466 (1990).
Z. Méliani , Nucl. Phys. A 575, 221 (1994).
M.A. Deleplanque , Phys. Lett. B 195, 17 (1987).
D. Horn , Nucl. Phys. A 441, 344 (1985).
H. Watanabe , RIKEN Accel. Prog. Rep. 35, 77 (2002).
F. Pühlhofer, Nucl. Phys. A 280, 267 (1977).
W. Andrejtscheff , Nucl. Instrum. Methods 204, 123 (1982).
R.B. Firestone, Table of Isotopes, 8th edition, Vol. 1 (Wiley-Interscience, New York, 1996).
P.M. Endt, At. Data Nucl. Data Tables, 26, 47 (1981).
K. Neergård , Phys. Lett. B 99, 191 (1981).
O. Häusser , Phys. Rev. Lett. 42, 1451 (1979).
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Communicated by J. Äystö
Received: 3 September 2003, Revised: 8 October 2003, Published online: 5 January 2004
PACS:
21.10.Tg Lifetimes - 23.20.Lv \(\gamma\) transitions and level energies - 27.70. + q \(150 \leq A \leq 189\)
T. Fukuchi: Present address: Center for Nuclear Study (CNS), University of Tokyo, RIKEN campus, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
W. Sato: Present address: Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka 560-0043, Japan.
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Watanabe, H., Wakabayashi, Y., Gono, Y. et al. Lifetime of a new high-spin isomer in 150 Dy . Eur. Phys. J. A 19, 163–167 (2004). https://doi.org/10.1140/epja/i2003-10150-y
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DOI: https://doi.org/10.1140/epja/i2003-10150-y