Lifetimes of ground-band states in Pt 192 and Pt </mml:…
1977; American Institute of Physics; Volume: 15; Issue: 4 Linguagem: Inglês
10.1103/physrevc.15.1325
ISSN1538-4497
AutoresNoah R. Johnson, Philippe Hubert, E. Eichler, D. G. Sarantites, J. A. Urbon, S. W. Yates, Thomas Lindblad,
Tópico(s)Electron and X-Ray Spectroscopy Techniques
ResumoThe lifetimes of members of the ground-state bands in $^{192}\mathrm{Pt}$ and $^{194}\mathrm{Pt}$ have been measured by the Doppler-shift recoil-distance technique. These states were Coulomb excited by 149 MeV $^{40}\mathrm{Ar}$ ions and measurements were carried out in coincidence with backscattered projectiles. The half-lives of the ${2}^{+}$, ${4}^{+}$, and ${6}^{+}$ states in $^{192}\mathrm{Pt}$ and of the ${2}^{+}$ and ${4}^{+}$ states in $^{194}\mathrm{Pt}$ are 48.5\ifmmode\pm\else\textpm\fi{}2.5, 4.2\ifmmode\pm\else\textpm\fi{}0.2, 1.8\ifmmode\pm\else\textpm\fi{}0.7, 45.0\ifmmode\pm\else\textpm\fi{}2.4, and 3.7\ifmmode\pm\else\textpm\fi{}0.2 ps, respectively.NUCLEAR REACTIONS $^{192,194}\mathrm{Pt}(^{40}\mathrm{Ar}^{\ensuremath{'}}, \ensuremath{\gamma})$, $E=149$ MeV; measured lifetimes of ${2}^{+}$, ${4}^{+}$, and ${6}^{+}$ states in $^{192}\mathrm{Pt}$ and of ${2}^{+}$ and ${4}^{+}$ states in $^{194}\mathrm{Pt}$; deduced $B(E2)$ values, compared with theory.
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