Decays of millisecond isomers in odd-odd N=81 nuclei146Tb,148Ho and150Tm

R. Broda; P. J. Daly; J. H. McNeill; Z. W. Grabowski; R. V.F. Janssens; R. D. Lawson; D. C. Radford

doi:10.1007/BF01294383

Decays of millisecond isomers in odd-odd N=81 nuclei¹⁴⁶Tb,¹⁴⁸Ho and¹⁵⁰Tm

R. Broda, P. J. Daly, J. H. McNeill, Z. W. Grabowski, R. V.F. Janssens, R. D. Lawson, D. C. Radford

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Abstract

Following reactions induced by 245 MeV⁶⁰Ni ions, isomers have been identified in the odd-odd N=81 isotones¹⁴⁶Tb,¹⁴⁸Ho and¹⁵⁰Tm with half-lives of 1.18(2), 2.35(4) and 5.2(3) ms, respectively. Their decays have been characterized by γ-ray spectroscopy. The isomers are interpreted as (πh_11/2 νh₁^2/-1) 10⁺ states decaying to members of πh_11/2 νd₃^2/-1 and πh₁₁^2/-1 multiplets. The observed level spectra and M1 branching ratios are found to be in good agreement with shell model predictions based on empirical and Schiffer-True πν^-1 residual interactions.

Original language	English
Pages (from-to)	11-17
Number of pages	7
Journal	Zeitschrift für Physik A Hadrons and Nuclei
Volume	334
Issue number	1
DOIs	https://doi.org/10.1007/BF01294383
State	Published - Mar 1989
Externally published	Yes

Keywords

21.60.Cs
23.20.Ck
23.20.Lv

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10.1007/BF01294383

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title = "Decays of millisecond isomers in odd-odd N=81 nuclei146Tb,148Ho and150Tm",

abstract = "Following reactions induced by 245 MeV60Ni ions, isomers have been identified in the odd-odd N=81 isotones146Tb,148Ho and150Tm with half-lives of 1.18(2), 2.35(4) and 5.2(3) ms, respectively. Their decays have been characterized by γ-ray spectroscopy. The isomers are interpreted as (πh11/2 νh12/-1) 10+ states decaying to members of πh11/2 νd32/-1 and πh112/-1 multiplets. The observed level spectra and M1 branching ratios are found to be in good agreement with shell model predictions based on empirical and Schiffer-True πν-1 residual interactions.",

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year = "1989",

month = mar,

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T1 - Decays of millisecond isomers in odd-odd N=81 nuclei146Tb,148Ho and150Tm

AU - Broda, R.

AU - Daly, P. J.

AU - McNeill, J. H.

AU - Grabowski, Z. W.

AU - Janssens, R. V.F.

AU - Lawson, R. D.

AU - Radford, D. C.

PY - 1989/3

Y1 - 1989/3

N2 - Following reactions induced by 245 MeV60Ni ions, isomers have been identified in the odd-odd N=81 isotones146Tb,148Ho and150Tm with half-lives of 1.18(2), 2.35(4) and 5.2(3) ms, respectively. Their decays have been characterized by γ-ray spectroscopy. The isomers are interpreted as (πh11/2 νh12/-1) 10+ states decaying to members of πh11/2 νd32/-1 and πh112/-1 multiplets. The observed level spectra and M1 branching ratios are found to be in good agreement with shell model predictions based on empirical and Schiffer-True πν-1 residual interactions.

AB - Following reactions induced by 245 MeV60Ni ions, isomers have been identified in the odd-odd N=81 isotones146Tb,148Ho and150Tm with half-lives of 1.18(2), 2.35(4) and 5.2(3) ms, respectively. Their decays have been characterized by γ-ray spectroscopy. The isomers are interpreted as (πh11/2 νh12/-1) 10+ states decaying to members of πh11/2 νd32/-1 and πh112/-1 multiplets. The observed level spectra and M1 branching ratios are found to be in good agreement with shell model predictions based on empirical and Schiffer-True πν-1 residual interactions.

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Decays of millisecond isomers in odd-odd N=81 nuclei¹⁴⁶Tb,¹⁴⁸Ho and¹⁵⁰Tm

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