/sup 3/H(. cap alpha. ,/sup 6/Li) n reaction at 0/sup 0/

Journal Article · Mon Aug 01 00:00:00 EDT 1977 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.16.513· OSTI ID:7288777

Brown, R E; Ohlsen, G G; Haglund, Jr, R F; Jarmie, N

We have measured excitation functions for the reaction /sup 3/H(..cap alpha..,/sup 6/Li) n at 0/sup 0/ (lab) in an energy range covering the resonance corresponding to the 5/2/sup -/ state in /sup 7/Li at 7.46 MeV of excitation. A Ti-tritide target on a nickel backing was bombarded by an ..cap alpha..-particle beam, and the /sup 6/Li reaction products at 0/sup 0/ were spatially separated from the beam in a magnetic field and were then detected in a thin solid-state detector. Data at 14 bombarding energies were obtained for the /sup 6/Li group emitted at theta/sub c.m./ = 0/sup 0/, and data at 11 energies were obtained for the /sup 6/Li group emitted at theta/sub c.m./ = 180/sup 0/. To normalize these reaction data we measured, simultaneously with the reaction, the yield of the elastically recoiling tritons at +- 15/sup 0/ and +- 30/sup 0/ (lab). We obtained absolute differential cross sections from the normalized reaction data by measuring excitation functions for /sup 3/H(..cap alpha..,t)/sup 4/He at 15/sup 0/ and 30/sup 0/ (lab) using a gas target. The average error in the reaction data is 2.7%; the errors in the 15/sup 0/ elastic data are less than 1%; the majority of the errors in the 30/sup 0/ elastic data are less than 2%; and the ..cap alpha..-particle beam energy at the reaction region of the targets was determined to an accuracy of 6 keV. Our reaction data are compared with other data, data evaluations, and a recent three-channel multilevel R-matrix analysis of a large body of mass-7 data.

• Research Organization: Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87545
• OSTI ID: 7288777
• Journal Information: Phys. Rev., C; (United States), Vol. 16:2
• Country of Publication: United States
• Language: English

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