E2 Core Polarization by Neutrons in the (i13/2)-2 Configuration in 206Pb

I Bergström; J Blomqvist; B Fant; A Filevich; G Lindén; K-G Rensfelt; J Sztarkier; K Wikström

doi:10.1088/0031-8949/3/1/003

Physica Scripta

E2 Core Polarization by Neutrons in the (i_13/2)^-2 Configuration in ²⁰⁶Pb

I Bergström¹, J Blomqvist¹, B Fant², A Filevich³, G Lindén¹, K-G Rensfelt¹, J Sztarkier¹ and K Wikström¹

Published under licence by IOP Publishing Ltd
Physica Scripta, Volume 3, Number 1 Citation I Bergström et al 1971 Phys. Scr. 3 11 DOI 10.1088/0031-8949/3/1/003

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Author affiliations

¹ Research Institute for Physics, Stockholm, Sweden

² On leave from the Physics Department, University of Helsinki, Finland

³ On leave from the Faculty of Sciences, University of Chile, Santiago de Chile

Dates

Received 1 February 1971

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Abstract

Using the ²⁰⁴Hg(α,2n) reaction and the pulsed beam of our 225 cm cyclotron, we have been able to localize the 12⁺ and 10⁺ states of the (i_13/2)^-2 configuration in ²⁰⁶Pb at the energies 4 027.2 and 3 957.6 keV, respectively. It has been possible to determine the partial E2 transition probability for the 12⁺ → 10⁺ transition and to derive an effective charge for the i_13/2 neutron, which is 0.94±0.04. It is concluded that the quadrupole polarization charge for the i_13/2 neutron is about 50% larger than for the h_9/2 proton.

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