Proton removal from 8B , 9C , and 12 C on Si at 20 70 MeV/nucleon

Details Proton removal from 8B , 9C , and 12 C on Si at 20 70 MeV/nucleon Proton removal from 8B , 9C , and 12 C on Si at 20 70 MeV/nucleon

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvc..69b4612w&link_type=abstract

Physical Review C, vol. 69, Issue 2, id. 024612

Physics

4

Nuclear Reaction Models And Methods, Breakup And Momentum Distributions, Projectile And Target Fragmentation

Scientific paper

A Si detector telescope, in which alternating thick and thin Si elements served as both targets and detectors, was used to measure the energy dependence of the inclusive one-proton-removal cross sections σ1p of 8B , 9C , and 12 C on a Si target. A similar detector telescope was used to measure both σ1p and σ2p for 9C ; σ2p of 9C is more than twice as large as σ1p of 9C and almost as large as σ1p of 8B . The measurements were compared with shell model calculations using eikonal reaction theory. The quenching factors Rs (the ratio of the measurement to the theoretical prediction) for 8B and 9C were near unity, as at higher energies. They also agreed with those measured recently for those nuclei on a C target at 75 MeV/nucleon . For 12 C the quenching is greater with Rs =0.44±0.03 . This is comparable to the value 0.53±0.02 deduced at energies above 1 GeV/nucleon .

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