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A. H. Lumpkin

Florida State University

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Featured researches published by A. H. Lumpkin.

Physical Review C | 1978

Cluster nature and parity of the 9. 155 MeV state in /sup 15/N

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

Assignment of a heavy-ion produced high-spin cascade to a Rh isotope

A. H. Lumpkin; L.H. Harwood; L.A. Parks; J. D. Fox

Physical Review C | 1977

Spectroscopy of high spin states in /sup 23/Na using the /sup 12/C(/sup 12/C,p. gamma. )/sup 23/Na reaction. [Branching and mixing ratio, lifetimes]

G. J. Kekelis; A. H. Lumpkin; K. W. Kemper; J. D. Fox

Physical Review C | 1979

Enhancements in the p and d exit channels of C 12 + C 12 : E c . m . ≃ 14.3 and 25.2 MeV

A. H. Lumpkin; Leigh Harwood; J. D. Fox; K. W. Kemper

Physical Review C | 1979

Enhancements in the p and d exit channels of /sup 12/C + /sup 12/C: E/sub c. m. / approx. = 14. 3 and 25. 2 MeV

A. H. Lumpkin; Leigh Harwood; J. D. Fox; K. W. Kemper

Physical Review C | 1976

Resonance-like behavior in the C12(O16,p)Al27 reaction

A. H. Lumpkin; G. J. Kekelis; K. W. Kemper; A. F. Zeller

Physical Review C | 1976

Resonance-like behavior in the /sup 12/C(/sup 16/O,p)/sup 27/Al reaction

A. H. Lumpkin; G. J. Kekelis; K. W. Kemper; A. F. Zeller

Physical Review C | 1977

Spectroscopy of high spin states in Na23 using the C12(C12,p?)Na23 reaction

G. J. Kekelis; A. H. Lumpkin; K. W. Kemper; J. D. Fox

Physical Review C | 1977

Jπof theEx=4.52MeV state inNa22via theC12(C12, dγ)Na22reaction

A. H. Lumpkin; G. J. Kekelis; K. W. Kemper; J. D. Fox

Physical Review C | 1977

Jp of the Ex=4.52 MeV state in Na22 via the C12(C12,d?)Na22 reaction

A. H. Lumpkin; G. J. Kekelis; K. W. Kemper; J. D. Fox

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K. W. Kemper

Florida State University

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J. D. Fox

Florida State University

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G. J. Kekelis

Lawrence Berkeley National Laboratory

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Leigh Harwood

Florida State University

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A. F. Zeller

Australian National University

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L.A. Parks

Florida State University

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L.H. Harwood

Florida State University

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