Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

A search has been carried out for the 1+ T = 1 level at 11.264 MeV in 20Ne formed as a parity-forbidden resonance in the 16O(α,γ)20Ne reaction. The yield of 11.26 MeV γ-rays was measured as a function of α-particle energy over an interval of 8 keV centred on the expected resonance energy of the 1+ T = 1 level. An energy and intensity standard was provided by the nearby 1- T = 1 resonance at an excitation energy of 11.275 MeV in 20Ne. A significant improvement in the fit to the measured yield curve was obtained by including a sharp resonance at the expected energy of the 1+ T = 1 level. From the analysis it is concluded that the 1+ T = 1 level has been observed with 90% confidence. The resonance strength extracted from the fit implies a parity-forbidden a-particle width of 42(+-20)× 10-6 eV for the 1+ T = 1 level. The corresponding parity non-conserving matrix element linking the 1+ T = 1 level with the 1+ T = 0 state at 11.23 MeV therefore lies within the, range 0.8 eV ≤ 〈VPNCΔT = 1〉 ≤ 2.6 eV. © 1983.

Original publication

DOI

10.1016/0375-9474(83)90157-4

Type

Journal article

Journal

Nuclear Physics, Section A

Publication Date

01/01/1983

Volume

394

Pages

1 - 15