Resonant Neutron Capture in 139La
Open Access
- 1 January 1977
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Physics
- Vol. 30 (6) , 599-604
- https://doi.org/10.1071/ph770599
Abstract
The neutron capture cross section of 139La has been measured with high energy resolution between 2� 5 and 90 ke V using the capture cross section facility at the 40 m station on the Oak Ridge Electron Linear Accelerator. Individual resonances were analysed to 15 keV and the average s- and p-wave radiative widths deduced were <Γγ>s = 55�6meV and <Γγ>p = 4O�7meV. The p-wave neutron strength function obtained was S1 = (0'30�0'1O)x 10-4 ? The s-wave resonances decay strongly to final f-wave states via a postulated doorway state mechanism. The transition strengths for these decays are not correlated with the neutron widths of the initial states.Keywords
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