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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 ![]() ![]() |
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 |
DOI: | 10.1016/S0375-9474(97)00134-6 |
ISSN: | 0375-9474 |
Appears in Collections: | (CFMAC-IEM) Artículos |
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