Elsevier

Physics Letters B

Volume 112, Issue 1, 29 April 1982, Pages 40-44
Physics Letters B

Measurement of the effective E5 single-particle transition densities in 89Y and 90Zr

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Abstract

The transition charge and current densities for the lowest E5 proton particle-hole excitation in 89Y (0.909 MeV) and 90Zr (2.319 MeV) have been extracted from electron scattering data. These excitations are dominated by the π(1 g92, 2 p−192) configuration. The transition densities indicate the importance of configuration mixing in the ground state of 90Zr. Single-particle predictions do not reproduce the shape of the empirical densities indicating the need for a surface peaked core polarization correction in both the charge and current densities.

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Work supported by US DOE Contract No. DE-AS02-79ER10338.

1

NATO Research Fellow of the Deutscher Akademischer Austauschdienst (DAAD), Bonn, Fed. Rep. Germany.

2

Supported in part by the US - Israel Binational Science Foundation, Jerusalem.

3

Supported in part by NSF Contract No. PHY77-27281.

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