Systematics of [sup 8]Li-induced radioactive beam reactions: [ital E]=13--20 MeV

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.308· OSTI ID:6329677

Becchetti, F D; Liu, W Z; Ashktorab, K; Bajema, J F; Brown, J A; Jaenecke, J W; Roberts, D A ^[1]; Kolata, J J; Lamkin, K L; Morsad, A; Smith, R J; Kong, X J ^[2]; Warner, R E ^[3]

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1. Physics Department, University of Michigan, Ann Arbor, Michigan 48109-1090 (United States)
2. Physics Department, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
3. Physics Department, Oberlin College, Oberlin, Ohio 44074 (United States)

Elastic and inelastic scattering, one-nucleon transfers [mostly ([sup 8]Li, [sup 7]Li)] and the ([sup 8]Li,[alpha]) fusion-evaporation reaction have been studied on a variety of targets ([ital A]=1--58) at [ital E]([sup 8]Li)[approx]13--20 MeV using the University of Michigan--University of Notre Dame radioactive nuclear beam (RNB) facility. The latter, which produces an energy-resolved ([similar to]500 keV FWHM), focused beam with intensity [approx gt]10[sup 6] [sup 8]Li/s, permitted measurements to selected nuclear levels with cross sections down to approximately 1 mb/sr. Based on the systematics of the measured [sup 8]Li elastic scattering an appropriate [sup 8]Li optical potential was deduced. Large inelastic scattering cross sections (and [ital B][[ital E]2[up arrow]]) are observed for [sup 8]Li[r arrow][sup 8]Li[sub 0.98][sup *]. Large cross sections are also observed for the ([sup 8]Li,[sup 7]Li) transfer reaction corresponding to quasielastic (viz., [ital Q][approx]0) neutron transfer to selected high spin excited levels in the residual nucleus. The ([sup 8]Li,[alpha]) fusion-evaporation reaction also appears to be significant and can produce very-high-energy [alpha] particles, viz., [ital E][sub [alpha]][much gt][ital E][sub beam]. Although observed using [sup 8]Li, these features appear to be important for many RNB-induced reactions and they must be considered, for example, in nucleosyntheis calculations involving [sup 8]Li and other short-lived radioactive nuclei.

• OSTI ID: 6329677
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:1; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DIRECT REACTIONS
ELASTIC SCATTERING
ENERGY RANGE
HEAVY ION REACTIONS
IN-BEAM SPECTROSCOPY
INELASTIC SCATTERING
LITHIUM 8 REACTIONS
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
SCATTERING
SPECTROSCOPY
TRANSFER REACTIONS