Ground-state widths of sup 5 He and sup 5 Li determined in the sup 3 H( d ,. gamma. ) sup 5 He and the sup 3 He( d ,. gamma. ) sup 5 Li reactions

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.43.343· OSTI ID:6150779

Balbes, M J; Feldman, G; Kramer, L H; Weller, H R ^[1]; Tilley, D R ^[2]

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1. Duke University, Durham, North Carolina (USA) Triangle Universities Nuclear Laboratory, Durham, North Carolina (USA)
2. North Carolina State University, Raleigh, North Carolina (USA) Triangle Universities Nuclear Laboratory, Durham, North Carolina (USA)

We have measured the widths of the 3/2{sup {minus}} ground states of {sup 5}He and {sup 5}Li using the {sup 3}H({ital d},{gamma}){sup 5}He and the {sup 3}He({ital d},{gamma}){sup 5}Li reactions at {ital E}{sub {ital d}}=8.6 MeV. The {gamma}-ray spectra were fitted with a convolution of the NaI line-shape response function, as measured with the {sup 3}H({ital p},{gamma}){sup 4}He reaction, and a Breit-Wigner single-level expression. The widths extracted from the spectra were found to be {Gamma}{sub {ital n}}=1.36{plus minus}0.19 MeV for {sup 5}He, and {Gamma}{sub {ital p}}=2.44{plus minus}0.21 MeV for {sup 5}Li. These values, significantly different from previously quoted measurements, lead to reduced widths which are equal to within error, a result which is consistent with the charge-symmetry property of the nuclear force.

• DOE Contract Number: AC05-76ER01067
• OSTI ID: 6150779
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 43:1; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

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