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Lithium isotopes beyond the drip line

AuthorsAksyutina, Yu.; Johansson, H. T.; Adrich, P.; Aksouh, F.; Aumann, T.; Boretzky, K.; García Borge, María José CSIC ORCID; Chatillon, A.; Chulkov, L. V.; Cortina-Gil, D.; Pramanik, U. Datta; Emling, H.; Forssén, C.; Fynbo, H. O. U.; Geissel, H.; Hellström, M.; Ickert, G.; Jones, K. L.; Jonson, B.; Kliemkiewicz, A.; Kratz, J. V.; Kulessa, R.; Lantz, M.; LeBleis, T.; Lindahl, A. O.; Mahata, K.; Matos, M.; Meister, M.; Münzenberg, G.; Nilsson, T.; Nyman, K. G.; Palit, R.; Pantea, M.; Paschalis, S.; Prokopowicz, W.; Reifarth, R.; Richter, I. A.; Riisager, K.; Schrieder, G.; Simon, H.; Sümmerer, K.; Tengblad, Olof CSIC ORCID ; Walus, W.; Weick, H.; Zhukov, M. V.
KeywordsLithium isotopes
[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19
[PACS] Polarization phenomena in reactions
Issue Date3-Aug-2008
CitationPhysics Letters B 666(5): 430–434 (2008)
AbstractThe unbound isotopes 10Li, 12Li and 13Li have been observed after nucleon-knockout reactions at relativistic energies with 11Li and 14Be beams impinging on a liquid hydrogen target. The channels 9Li+n, 11Li+n and 11Li+2n were analysed in the ALADIN-LAND setup at GSI. The 10Li data confirm earlier findings, while the 12Li and 13Li nuclei were observed for the first time. The 11Li+n relative-energy spectrum shows that the ground state of 12Li can be described as a virtual s-state with a scattering length of −13.7(1.6) fm. A broad energy spectrum was found for the 11Li+2n channel. Based on the assumption that the relative-energy spectrum is dominated by a correlated background presumably stemming from initial correlations in the 14Be ground-state, evidence for a 13Li resonance at 1.47(31) MeV above the 11Li+2n threshold with a width around 2 MeV has been found.
Description5 pages, 3 figures, 1 table.-- PACS nrs.: 27.20.+n, 24.70.+s.-- Printed version published Sep 11, 2008.
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