Physics – Nuclear Physics
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phrvc..62b4608w&link_type=abstract
Physical Review C (Nuclear Physics), Volume 62, Issue 2, August 2000, id.024608
Physics
Nuclear Physics
12
Interaction And Reaction Cross Sections, Nuclear Reaction Models And Methods
Scientific paper
Total reaction cross sections σR of (30-60)A MeV 4,6,8He and 6,7,8,9,11Li on Pb, and 2n-removal cross sections σ-2n of 6,8He and 11Li on Pb, were measured by injecting magnetically separated, focused, monoenergetic, secondary beams of those projectiles into a telescope containing Pb targets separated by thin Si detectors. All these σR's (except 4He), and σ-2n for 6He and 11Li, are underpredicted by microscopic model calculations which include only nuclear forces. Better agreement is achieved by including electromagnetic dissociation in the model, for those projectiles for which either the electric dipole response functions or the dominant photodissociation cross sections were known. The cross sections σ-4n for 8He, σ-xn for 7,8,9Li, and (σ-3n+σ-4n) for 11Li were found to be <=0.7 b. All σR's were measured to better than 5% accuracy, showing that the method is usable for other target elements sandwiched into a Si telescope.
Becchetti F. D.
Brown Justin A.
Galonsky Aaron
Kolata James J.
McKinnon M. H.
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