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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11209
Title: Invariant-mass spectroscopy of Li-10 and Li-11
Authors: Zinser, M.; Humbert, F.; Nilsson, T.; Schwab, W.; Simon, H.; Aumann, T.; García Borge, María José; Chulkov, L. V.; Cub, J.; Elze, Th. W.; Emling, H.; Geissel, H.; Guillemaud-Mueller, D.; Holzmann, R.; Irnich, H.; Jonson, B.; Kratz, J. V.; Kulessa, R.; Leifels, Y.; Lenske, H.; Magel, A.; Mueller, A. C.; Münzenberg, G.; Nickel, F.; Nyman, G.; Richter, Achim W.; Riisager, K.; Scheidenberger, C.; Schrieder, G.; Stelzer, K.; Stroth, J.; Surowiec, A.; Tengblad, Olof; Wajda, E.; Zude, E.
Keywords: Nuclear Reactions C, Pb(Li-11,xn), E=280 MeV/nucleon
Measured neutron multiplicity
Breakup σ
Li-11, Li-10 deduced resonances
Decay features
γ-decay associated sum-rule strengths
[PACS] Projectile and target fragmentation
[PACS] Coulomb excitation
[PACS] Properties of specific nuclei listed by mass ranges:6 ≤ A ≤ 19
Issue Date: 16-Jun-1997
Publisher: Elsevier
Citation: Nuclear Physics A 619(1-2): 151-176 (1997)
Abstract: Break-up of secondary Li-11 ion beams (280 MeV/nucleon) on C and Pb targets into Li-9 and neutrons is studied experimentally. Cross sections and neutron multiplicity distributions are obtained, characterizing different reaction mechanisms. Invariant-mass spectroscopy for Li-11 and Li-10 is performed. The E1 strength distribution, deduced from electromagnetic excitation of Li-11 up to an excitation energy of 4 MeV comprises ~8% of the Thomas-Reiche-Kuhn energy-weighted sumrule strength. Two low-lying resonance-like structures are observed for Li-10 at decay energies of 0.21(5) and 0.62(10) MeV, the former one carrying 26(10)% of the strength and likely to be associated with an s-wave neutron decay. A strong di-neutron correlation in Li-11 can be discarded. Calculations in a quasi-particle RPA approach are compared with the experimental results for Li-10 and Li-11.
Description: 26 pages, 5 tables, 10 figures.-- PACS nrs.: 25.60.+v; 27.20.+n; 25.70.Mn; 25.70.De.
Publisher version (URL): http://dx.doi.org/10.1016/S0375-9474(97)00134-6
URI: http://hdl.handle.net/10261/11209
ISSN: 0375-9474
DOI: 10.1016/S0375-9474(97)00134-6
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