Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apro10001h&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
A new method for measuring single-particle spectroscopic factors is based on knockout reactions in inverse kinematics of fast radioactive projectiles, see the review( P.G. Hansen and B.M. Sherrill, Nucl. Phys. A 693), 133--168 (2001).. We assess the accuracy of this technique by calculating the accurately known experimental inclusive cross sections for ^16O and ^12C on a target of ^12C. Relative to the shell model combined with eikonal reaction theory, the quenching factors Rs are 0.49--0.68. The values for the proton knockout are essentially identical to those found in the (e,e^'p) reaction, normally considered the benchmark for spectroscopic factors. The halo proton of ^8B has Rs = 0.88(4), where the stronger presence in the wave function may be an effect of the low binding of this state. It is suggested that nuclear knockout has potential for providing precise orbital occupancies in a wide range of nuclei including rare radioactive species. In addition it applies equally to neutrons and protons. This work was supported by the National Science Foundation, Grants No. PHY 9528844 and PHY 0070911 and by the United Kingdom EPSRC Grant No. GR/M82141.
Brown Alex B.
Hansen Gregers P.
Sherrill Bradley M.
Tostevin J. A.
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