Elsevier

Nuclear Physics A

Volume 292, Issues 1–2, 21–28 November 1977, Pages 107-124
Nuclear Physics A

Nuclear structure of 41Ca from inelastic proton scattering

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Abstract

Angular distributions have been measured for inelastic and elastic scattering of 19 MeV protons on 40, 41Ca. A total of 89 levels were identified below 6.4 MeV in 41Ca with an energy resolution of 12 keV. Inelastic transition strengths have been extracted using DWBA theory with a vibrational model form factor. These transition strengths correlate well with inelastic α-scattering and electro-magnetic values. The quadrupole strengths are interpreted in terms of the coexistence model and imply that the excited-core admixtures in the ground states of both 40Ca and 41Ca are ≈ 5 %. The octupole strength in 41Ca exhibits features characteristic of the weak coupling of an f72 neutron to the lowest 3 state in 40Ca. The l = 5 strength exhibits a similar weak-coupling behaviour. In both cases the microscopic structure appreciably reduces the transition strength for the highest spin members of the weak-coupling multiplets.

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    ††'†

    Supported by the National Science Foundation.

    Present address, Institute of Physics, University of Bergen, 5000 Bergen, Norway.

    ††

    Present address, KVI, University of Groningen, the Netherlands.

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