%0 Journal Article
%T Impact Parameter Dependence of the Double Neutron/Proton Ratio of Nucleon Emissions in Isotopic Reaction Systems<br>
%A ZHANG Xun-Chao
%A LI Bao-An
%A CHEN Lie-Wen
%A YONG Gao-Chan
%A <br>
%J 中国物理快报
%D 2009
%I 
%X Within the transport model IBUU04, we investigate the double neutron/proton ratio of free nucleons taken from two reaction systems using two Sn isotopes at a beam energy of 50MeV/nucleon and with impact parameters 2fm, 4fm and 8fm, respectively. It is found that the double neutron/proton ratio from peripheral collisions is more sensitive to the density dependence of the symmetry energy than those from mid-central and central collisions.
%K 25
%K 70
%K -z
%K 24
%K 10
%K Lx<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=1822B4965AF563F9DA40D71122967478&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=94C357A881DFC066&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0