Intermediate-energy Coulomb excitation of Sn104 : Moderate E2 strength decrease approaching Sn100
Year: 2014
Type: article
Abstract: The reduced transition probability $B(E2)\ensuremath{\uparrow}$ of the first excited ${2}^{+}$ state in the nucleus $^{104}\mathrm{Sn}$ was measured via Coulomb excitation in inverse kinematics at intermediate energies. A value of 0.173(28) ${e}^{2}\mathrm{b}{}^{2}$ was extracted from the absolute cross section on a Pb target. Feeding contributions in $^{104}\mathrm{Sn}$ from higher lying states were estimated by a reference measurement of the stable $^{112}\mathrm{Sn}$. Corresponding only to a moderate decrease of excitation strength relative to the almost constant values observed in the proton-rich, even-$A ^{106\ensuremath{-}114}\mathrm{Sn}$ isotopes, present state-of-the-art shell-model predictions, which include proton and neutron excitations across the $N=Z=50$ shell closures as well as standard polarization charges, underestimate the experimental findings.
Source: Physical Review C
Authors: P. Doornenbal, S. Takeuchi, N. Aoi, M. Matsushita, A. Obertelli, D. Steppenbeck, H. Wang, L. Audirac, H. Baba, P. Bednarczyk, S. Boissinot, M. Ciemala, A. Corsi, T. Furumoto, T. Isobe, A. Jungclaus, V. Lapoux, J. Lee, K. Matsui, T. Motobayashi, D. Nishimura, S. Ota, E. C. Pollacco, H. Sakurai, C. Santamaria, Y. Shiga, D. Sohler, R. Taniuchi
Institutions: RIKEN, RIKEN Nishina Center, The University of Osaka, Rikkyo University, The University of Tokyo, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Paris-Saclay - Etablissement de Saclay, CEA Paris-Saclay, Peking University, State Key Laboratory of Nuclear Physics and Technology, Institute of Nuclear Physics, Polish Academy of Sciences, National Institute of Technology, Ichinoseki College, Consejo Superior de Investigaciones Científicas, Instituto de Estructura de la Materia, Tokyo University of Science, HUN-REN Institute for Nuclear Research, Hungarian Academy of Sciences
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2255490433