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U.S. Department of Energy
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Search for non-yrast states in /sup 98/Ru via the (/sub 3/He, 2n. gamma. ) reaction

Thesis/Dissertation ·
OSTI ID:5379980
A large number of new states have been observed in /sup 98/Ru via the (/sup 3/He,2n..gamma..) reaction. Because of the low binding energy and low mass of /sup 3/He nuclei, the reaction can be used to populate non-yrast states. Excitation functions, angular distributions, linear polarizations, ..gamma..-..gamma.. coincidences, and ..gamma..-..gamma.. directional correlations were measured and used to construct a level scheme for /sup 98/Ru. Several new techniques were developed for data analysis. The simultaneous analysis of angular distributions and linear polarizations has been shown to be a more powerful tool for making angular momentum assignments than either separately. Together with excitation functions, these experiments did a successful job of predicting spins of many new states. Eighteen of the observed thirty-four states have been observed the first time in this investigation. A rotational model calculation treating the Coriolis term exactly and including a simple residual interaction was performed. The model was successful in predicting the energies and transition properties of many states.
Research Organization:
Purdue Univ., Lafayette, IN (USA)
OSTI ID:
5379980
Country of Publication:
United States
Language:
English