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- W2078990514 abstract "The photo-induced depopulation of the quasistable isomer ${(t}_{1/2}>~1.2ifmmodetimeselsetexttimesfi{}{10}^{15} mathrm{yr})$ in ${}^{180}mathrm{Ta}$ with angular momentum and parity ${J}^{ensuremath{pi}}{=9}^{ensuremath{-}}$ at an excitation energy ${E}_{x}=75 mathrm{keV}$ was studied at the new bremsstrahlung irradiation facility installed at the Stuttgart 4.3 MV DYNAMITRON accelerator in the energy range of bremsstrahlung end point energies between ${E}_{0}=0.8--3.1 mathrm{MeV}.$ The onset of the isomer depopulation could be observed starting at an end point energy of ${E}_{0}ensuremath{approx}1 mathrm{MeV},$ i.e., at an intermediate state of ${}^{180}mathrm{Ta}$ at or below that energy. Higher-lying intermediate states were found at 1.22, 1.43, 1.55, 1.85, 2.16, 2.40, 2.64, and 2.80 MeV. The extracted integrated cross sections show a remarkably strong depopulation of the ${}^{180}{mathrm{Ta}}^{m}$ isomer by photoexcitation. The results are compared with previous experiments and recent quasiparticle-phonon model calculations. Implications of the results for a possible nucleosynthesis of ${}^{180}mathrm{Ta}$ in the s process and the neutrino process are discussed." @default.
- W2078990514 created "2016-06-24" @default.
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- W2078990514 date "2002-02-14" @default.
- W2078990514 modified "2023-10-13" @default.
- W2078990514 title "Photo-induced depopulation of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>180</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant=normal>Ta</mml:mi></mml:mrow><mml:mrow><mml:mi>m</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>isomer via low-lying intermediate states: Structure and astrophysical implications" @default.
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- W2078990514 doi "https://doi.org/10.1103/physrevc.65.035801" @default.
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