1<?xml version="1.0"?> 2<qmcsystem> 3 <particleset name="ion0" size="2"> 4 <group name="C"> 5 <parameter name="charge">4</parameter> 6 <parameter name="valence">4</parameter> 7 <parameter name="atomicnumber">6</parameter> 8 </group> 9 <attrib name="position" datatype="posArray"> 10 0.0000000000e+00 0.0000000000e+00 0.0000000000e+00 11 2.3480414016e+00 0.0000000000e+00 0.0000000000e+00 12</attrib> 13 <attrib name="ionid" datatype="stringArray"> 14 C C 15</attrib> 16 </particleset> 17 <particleset name="e" random="yes" randomsrc="ion0"> 18 <group name="u" size="4"> 19 <parameter name="charge">-1</parameter> 20 </group> 21 <group name="d" size="4"> 22 <parameter name="charge">-1</parameter> 23 </group> 24 </particleset> 25</qmcsystem> 26