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- W2233704858 abstract "The resonant scattering of electron bremsstrahlung by an enriched sample of $^{136}mathrm{Ba}$ has been studied for photon energies of up to 5 MeV. It provided estimates of the radiative widths for 10 levels. Based on the relative yields at scattering angles of 96ifmmode^circelsetextdegreefi{} and 126ifmmode^circelsetextdegreefi{}, unambiguous spin assignments were made to 5 of these levels. Where feasible, the yield measurements were supplemented by self-absorption data and by linear polarization studies. For the strongest excitation in $^{136}mathrm{Ba}$, at 3.436 MeV, the resonance fluorescence experiments led to a ${1}^{ensuremath{-}}$ assignment and a value ${ensuremath{Gamma}}_{0}=88ifmmodepmelsetextpmfi{}22$ meV for the partial width of the ground state transition. The corresponding $E1$ strength is approximately $frac{1}{3}$ of the $E1$ strengths observed for the strongest low-lying $E1$ transitions in the even-even $N=82$ nuclei. When combined with previous observations for $N>82$, the result obtained for $^{136}mathrm{Ba}$ ($N=80$) indicates that the strengths of the ground state transitions from the lowest ${1}^{ensuremath{-}}$ states peak at $N=82$. Yield information on a few levels in $^{137}mathrm{Ba}$ and $^{138}mathrm{Ba}$ was also obtained.NUCLEAR REACTIONS $^{136,137,138}mathrm{Ba}(ensuremath{gamma}, ensuremath{gamma})$ bremsstrahlung $1.68 mathrm{MeV}<~{E}_{e}<~5.0 mathrm{MeV}$; measured $ensuremath{sigma}(96ifmmode^circelsetextdegreefi{})$ and $ensuremath{sigma}(126ifmmode^circelsetextdegreefi{})$, self-absorption, LP; deduced $g$ $frac{{{ensuremath{Gamma}}_{0}}^{2}}{ensuremath{Gamma}}$, $J$, $ensuremath{pi}$. Enriched $^{136}mathrm{Ba}$ target, natural target." @default.
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- W2233704858 date "1978-11-01" @default.
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- W2233704858 title "Nuclear resonance fluorescence in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant=normal>Ba</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>136</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>" @default.
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- W2233704858 doi "https://doi.org/10.1103/physrevc.18.2138" @default.
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