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Exclusive and Restricted-Inclusive Reactions Involving the Be-11 One-Neutron Halo

R. Anne ; R. Bimbot ; S. Dogny ; H. Emling ; D. Guillemaudmueller ; P. G. Hansen ; P. Hornshoj ; F. Humbert ; Björn Jonson (Institutionen för experimentell fysik, Subatomär fysik) ; M. Keim ; M. Lewitowicz ; P. Moller ; A. C. Mueller ; R. Neugart ; Thomas Nilsson (Institutionen för experimentell fysik, Subatomär fysik) ; Göran Nyman (Institutionen för experimentell fysik, Subatomär fysik) ; F. Pougheon ; K. Riisager ; M. G. Saintlaurent ; G. Schrieder ; O. Sorlin ; Olof Tengblad ; Katarina Wilhelmsen Rolander (Institutionen för experimentell fysik, Subatomär fysik)
Nuclear Physics A (0375-9474). Vol. 575 (1994), 1, p. 125-154.
[Artikel, refereegranskad vetenskaplig]

Reactions of a 41 MeV/u beam of the radioactive halo nucleus Be-11 have been studied with a counter telescope coupled to an array of neutron detectors covering angles up to 97-degrees. The technique allows to determine single-neutron inclusive and exclusive angular distributions. The targets (Be, Ti and Au) were chosen to illustrate the relative roles played by nuclear and Coulomb mechanisms. The channels leading to Be-10, the dissociation channels, correspond to impact parameters larger than the sum of the radii of the target and the Be-10 core. It is shown that for the dissociation process it is possible to account almost quantitatively for the integral, single- and double-differential cross sections from models without free parameters including the Coulomb, Serber and Glauber (diffraction-dissociation) mechanisms. The neutron distributions from the nondissociative reaction channels show little individuality and it is convenient to group them together as the channel ''neutron plus anything different from Be-10''. We refer to these as ''restricted-inclusive'' reactions. These seem to be a promising tool for obtaining accurate information on the halo wave function in momentum coordinates.

Nyckelord: BE-9, TI, AU-197 (BE-11,X), E=41 MEV/NUCLEON, MEASURED INCLUSIVE, EXCLUSIVE SIGMA(UPSILON(N)) UP TO 97-DEGREES, DOUBLE-DIFFERENTIAL, SIGMA(UPSILON,E(N)) NEAR 0-DEGREES, INTEGRAL SIGMA(BE-10) FOLLOWING, PROJECTILE BREAKUP, ANALYSIS IN TERMS OF COULOMB, SERBER AND, DIFFRACTIVE MECHANISMS, DISSOCIATION CROSS-SECTION, COULOMB DISSOCIATION, RICH NUCLEI, PROJECTILE FRAGMENTATION, ASTROPHYSICAL INTEREST, LI-11 PROJECTILES, LIGHT-NUCLEI, HEAVY-IONS, BREAK-UP, EXCITATION



Denna post skapades 2007-03-27. Senast ändrad 2014-09-02.
CPL Pubid: 40026

 

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Institutionen för experimentell fysik, Subatomär fysik (1900-2005)

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