A. H. Lumpkin
Florida State University
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Featured researches published by A. H. Lumpkin.
Physical Review C | 1978
Leigh Harwood; K. W. Kemper; J. D. Fox; A. H. Lumpkin
The lifetime of the 9.155 MeV J = 5/2 state in /sup 15/N has been measured to be < 13 fsec from a study of the /sup 12/C(/sup 7/Li,..cap alpha gamma..)/sup 15/N reaction at E/sub 7Li/ = 28 MeV. The ..gamma.. decay from the 9.155 MeV state to the 5.30 MeV 1/2/sup +/ state is established as E2 and thereby determines the parity of the 9.155 MeV state to be positive. Particle-gated ..gamma..-ray spectra from /sup 12/C(/sup 7/Li,..cap alpha gamma..) and /sup 12/C(/sup 6/Li,/sup 3/He..gamma..) reactions show that the 9.155 MeV state has a large triton cluster parentage. The other member of the unresolved doublet, the 9.152 MeV 3/2/sup -/ state, has a very small cluster parentage. These results are in disagreement with simple /sup 12/C + t interpretations of /sup 15/N but agree with weak coupling model calculations.
Physical Review C | 1978
A. H. Lumpkin; L.H. Harwood; L.A. Parks; J. D. Fox
Physical Review C | 1977
G. J. Kekelis; A. H. Lumpkin; K. W. Kemper; J. D. Fox
Physical Review C | 1979
A. H. Lumpkin; Leigh Harwood; J. D. Fox; K. W. Kemper
Physical Review C | 1979
A. H. Lumpkin; Leigh Harwood; J. D. Fox; K. W. Kemper
Physical Review C | 1976
A. H. Lumpkin; G. J. Kekelis; K. W. Kemper; A. F. Zeller
Physical Review C | 1976
A. H. Lumpkin; G. J. Kekelis; K. W. Kemper; A. F. Zeller
Physical Review C | 1977
G. J. Kekelis; A. H. Lumpkin; K. W. Kemper; J. D. Fox
Physical Review C | 1977
A. H. Lumpkin; G. J. Kekelis; K. W. Kemper; J. D. Fox
Physical Review C | 1977
A. H. Lumpkin; G. J. Kekelis; K. W. Kemper; J. D. Fox
