Elsevier

Annals of Physics

Volume 13, Issue 2, May 1961, Pages 284-306
Annals of Physics

Level scheme of Au198 determined by analysis of high-precision capture gamma-ray measurements

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Abstract

The gamma-ray spectrum resulting from the capture of thermal neutrons by Au197 has been investigated by use of the Argonne 7.7-meter bent-crystal spectrometer. A total of 122 lines corresponding to transition energies less than 835 kev were observed. Their energies were determined with an average precision of 1 part in 5000. The method of generating a “most probable” level scheme for Au198 from these measurements is described. A scheme containing 25 states is obtained which shows an unusual “fine structure” grouping of several levels.

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Work performed under the auspices of the U. S. Atomic Energy Commission.

Now at Ramo-Wooldridge Research Laboratory, Canoga Park, California.

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