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http://dx.doi.org/10.1103/physrevc.32.1006 | DOI Listing |
J Res Natl Inst Stand Technol
August 2016
Department of Physics, Tennessee Technological University, Cookeville, Tennessee 38505.
The development of the GRID technique for determining nuclear level lifetimes of excited low-spin states populated in thermal neutron capture reactions has resulted in the ability to perform detailed studies of proposed multiphonon excitations for the first time. This paper discusses the experimental evidence for multiphonon excitations determined using the GRID technique. In deformed nuclei several good examples of γγK(π) = 4(+) excitations have been established, whereas the experimental evidence gathered on K(π)= 0(+) bands is contradictory, and any interpretations will likely involve the mixing of several different configurations.
View Article and Find Full Text PDFGeochim Cosmochim Acta
April 1994
Department of Geology, Florida International University, University Park, Miami 33199, USA.
Two weathering profiles, each consisting of an upper, sericite-rich zone and a lower, chlorite-rich zone, are preserved between flows of the Mt. Roe Basalt in the Fortescue Group, Hamersley Basin, Western Australia. REE concentrations in samples from these two profiles, which originally developed ca 2,760 Ma, show large variations depending on stratigraphic position.
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