Maqola

Collectivity at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>50</mml:mn></mml:mrow></mml:math>:<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Ge</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>82</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Se</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>84</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>

A. GadeDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USAT. BaugherDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USAD. BazinNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USAB. A. BrownDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USAC. M. CampbellNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USAT. GlasmacherDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USAG. F. GrinyerNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USAMareki HonmaCenter for Mathematical Sciences, University of Aizu, Tsuruga, Ikki-machi, Aizu-Wakamatsu, Fukushima 965-8580, JapanS. McDanielDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USAR. MeharchandDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USAT. OtsukaDepartment of Physics and Center for Nuclear Study, University of Tokyo, Hongo, Tokyo 113-0033, JapanA. RatkiewiczDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USAJ. A. TostevinDepartment of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United KingdomK. A. WalshDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USAD. WeißhaarNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA

2010lv

ABI

Annotatsiya

The neutron-rich $N=50$ isotones $^{82}\mathrm{Ge}$ and $^{84}\mathrm{Se}$ were investigated using intermediate-energy Coulomb excitation on a $^{197}\mathrm{Au}$ target and inelastic scattering on $^{9}\mathrm{Be}$. As typical for intermediate-energy Coulomb excitation with projectile energies exceeding 70 MeV/nucleon, only the first ${2}^{+}$ states were excited in $^{82}\mathrm{Ge}$ and $^{84}\mathrm{Se}$. However, in the inelastic scattering on a $^{9}\mathrm{Be}$ target, a strong population of the first ${4}^{+}$ state was observed for $^{84}\mathrm{Se}$, while there is no indication of a similarly strong excitation of the corresponding state in the neighboring even-even isotone $^{82}\mathrm{Ge}$. The results are discussed in the framework of systematics and shell-model calculations using three different effective interactions.

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Identifikatorlar

DOI: 10.1103/physrevc.81.064326

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