Neutron Momentum Distributions from “Core Break-Up” Reactions of Halo Nuclei

T. Nilsson; Th. Blaich; M. J. G. Borge; L. V. Chulkov; Th. W. Elze; H. Emling; H. Geissel; K. Grimm; D. Guillemaud-Mueller; P. G. Hansen; R. Holzmann; P. Hornshøj; F. Humbert; H. Irnich; L. Johannsen; B. Jonson; M. Keim; J. G. Keller; H. Klingler; J. V. Kratz; R. Kulessa; D. Lambrecht; Y. Leifels; M. Lewitowicz; A. Magel; M. F. Mohar; A. C. Mueller; G. Münzenberg; R. Neugart; F. Nickel; G. Nyman; A. Richter; K. Riisager; M.-G. Saint-Laurent; C. Scheidenberger; G. Schrieder; W. Schwab; B. M. Sherrill; H. Simon; O. Sorlin; K. Stelzer; J. Stroth; O. Tengblad; E. Wajda; K. Wilhelmsen Rolander; M. Zinser; E. Zude

doi:10.1209/0295-5075/30/1/004

Neutron Momentum Distributions from "Core Break-Up" Reactions of Halo Nuclei

T. Nilsson¹, Th. Blaich², M. J. G. Borge³, L. V. Chulkov⁴, Th. W. Elze⁵, H. Emling⁶, H. Geissel⁶, K. Grimm⁵, D. Guillemaud-Mueller⁷, P. G. Hansen⁸, R. Holzmann⁶, P. Hornshøj⁸, F. Humbert⁶, H. Irnich⁵, L. Johannsen⁸, B. Jonson¹, M. Keim¹⁰, J. G. Keller¹¹, H. Klingler⁵, J. V. Kratz², R. Kulessa¹², D. Lambrecht², Y. Leifels¹¹, M. Lewitowicz¹³, A. Magel⁶, M. F. Mohar⁶, A. C. Mueller⁷, G. Münzenberg⁶, R. Neugart¹⁰, F. Nickel⁶, G. Nyman¹, A. Richter⁹, K. Riisager⁸, M.-G. Saint-Laurent¹³, C. Scheidenberger⁶, G. Schrieder⁹, W. Schwab⁶, B. M. Sherrill¹⁴, H. Simon⁹, O. Sorlin⁷, K. Stelzer⁵, J. Stroth⁶, O. Tengblad¹⁵, E. Wajda¹², K. Wilhelmsen Rolander¹, M. Zinser⁶ and E. Zude⁶

Published under licence by IOP Publishing Ltd
Europhysics Letters, Volume 30, Number 1 Citation T. Nilsson et al 1995 EPL 30 19 DOI 10.1209/0295-5075/30/1/004

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¹ Fysiska Institutionen, Chalmers Tekniska Högskola - S-412 96 Göteborg, Sweden

² Institut für Kernchemie, Johannes-Gutenberg-Universität - D-55099 Mainz, Germany

³ Instituto de Estructura de la Materia, CSIC - E-28006 Madrid, Spain

⁴ Russian Scientific Center "Kurchatov Institute", Institute of General and Nuclear Physics - Moscow 123182, Russia

⁵ Institut für Kernphysik, Johann-Wolfgang-Goethe-Universität, D-60486 Frankfurt, Germany

⁶ Gesellschaft für Schwerionenforschung (GSI) - D-64291 Darmstadt, Germany

⁷ Institut de Physique Nucléaire - BP 1, F-91406 Orsay Cedex, France

⁸ Institut for Fysik og Astronomi, Aarhus Universitet - DK-8000 Aarhus C, Denmark

⁹ Institut für Kernphysik, Technische Hochschule - D-64289 Darmstadt, Germany

¹⁰ Institut für Physik, Universität Mainz - D-55099 Mainz, Germany

¹¹ Institut für Experimentalphysik, Ruhr-Universität Bochum, D-44780 Bochum, Germany

¹² Instytut Fizyki, Uniwersytet Jagelloński - PL-30-059 Kraków, Poland

¹³ GANIL - BP 5027, F-14021 Caen Cedex, France

¹⁴ Michigan State University - East Lansing, MI 48824-1321, USA

¹⁵ PPE Division, CERN - CH-1211 Genève 23, Switzerland

Dates

Received 16 December 1994

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Abstract

Neutron angular distributions from violent break-up reactions of ¹¹Li and ¹¹Be have been measured at 28 MeV/u and 280 MeV/u and at 41 MeV/u and 460 MeV/u, respectively. The derived neutron momentum distributions show a narrow component in transverse momentum that is within uncertainties independent of beam energy and target charge. This component is suggested to be simply related to the momentum distribution of the loosely bound halo neutron(s) in the projectiles.

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