Lithium isotopes beyond the drip line

被引：74

作者：

Aksyutina, Yu. ^{[1
,2
]}

Johansson, H. T. ^{[1
]}

Adrich, P. ^{[2
,3
]}

Aksouh, F. ^{[2
]}

Aumann, T. ^{[2
]}

Boretzky, K. ^{[2
]}

Borge, M. J. G. ^{[4
]}

Chatillon, A. ^{[2
]}

Chulkov, L. V. ^{[2
,5
]}

Cortina-Gil, D. ^{[2
,6
]}

Pramanik, U. Datta ^{[7
]}

Emling, H. ^{[2
]}

Forssen, C. ^{[1
]}

Fynbo, H. O. U. ^{[8
]}

Geissel, H. ^{[2
]}

Hellstroem, M. ^{[2
]}

Ickert, G. ^{[2
]}

Jones, K. L. ^{[2
]}

Jonson, B. ^{[1
]}

Kliemkiewicz, A. ^{[2
,3
]}

Kratz, J. V. ^{[9
]}

Kulessa, R. ^{[3
]}

Lantz, M. ^{[1
]}

LeBleis, T. ^{[2
]}

Lindahl, A. O. ^{[10
]}

Mahata, K. ^{[2
]}

Matos, M. ^{[2
]}

Meister, M. ^{[1
]}

Muenzenberg, G. ^{[2
]}

Nilsson, T. ^{[1
,11
]}

Nyman, G. ^{[1
]}

Palit, R. ^{[12
]}

Pantea, M. ^{[2
,11
]}

Paschalis, S. ^{[13
]}

Prokopowicz, W. ^{[2
]}

Reifarth, R. ^{[2
,12
]}

Richter, A. ^{[11
]}

Riisager, K.

Schrieder, G. ^{[11
]}

Simon, H. ^{[2
]}

Suemmerer, K. ^{[2
,8
]}

Tengblad, O. ^{[4
]}

Walus, W. ^{[3
]}

Weick, H. ^{[2
]}

Zhukov, M. V. ^{[1
]}

机构：

[1] Chalmers Tekniska Hogskola, Fundamental Fys, S-41296 Gothenburg, Sweden

[2] Gesell Schwerionenforsch GSI, D-64291 Darmstadt, Germany

[3] Univ Jagiellonski, Inst Fizyki, PL-30059 Krakow, Poland

[4] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain

[5] IV Kurchatov Atom Energy Inst, RU-123182 Moscow, Russia

[6] Univ Santiago de Compostela, Santiago De Compostela 15706, Spain

[7] Saha Inst Nucl Phys, Kolkata 700064, W Bengal, India

[8] Univ Aarhus, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[9] Johannes Gutenberg Univ Mainz, Inst Kernchem, D-55099 Mainz, Germany

[10] Univ Gothenburg, Inst Fys, S-41296 Gothenburg, Sweden

[11] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[12] Goethe Univ Frankfurt, Inst Kernphys, D-60486 Frankfurt, Germany

[13] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England

来源：

PHYSICS LETTERS B | 2008年 / 666卷 / 05期

关键词：

D O I：

10.1016/j.physletb.2008.07.093

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The unbound isotopes Li-10, Li-12 and Li-13 have been observed after nucleon-knockout reactions at relativistic energies with Li-11 and Be-14 beams impinging on a liquid hydrogen target. The channels Li-9 + n, Li-11 + n and Li-11 + 2n were analysed in the ALADIN-LAND setup at GSI. The Li-10 data confirm earlier findings, while the Li-12 and Li-13 nuclei were observed for the first time. The Li-11 + n relative-energy spectrum shows that the ground state of Li-12 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 Li-11 + (2)n channel. Based on the assumption that the relative-energy spectrum is dominated by a correlated background presumably stemming from initial correlations in the Be-14 ground-state, evidence for a Li-13 resonance at 1.47(31) MeV above the Li-11 + 2n threshold with a width around 2 MeV has been found. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：430 / 434

页数：5

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