  The neutron yield in $^{12}$C(d,n)$^{13}$N and the proton yield in
$^{12}C(d,p)^{13}$C have been measured by deuteron beam from 0.6 MeV to 3 MeV
which is delivered from a 4-MeV electro static accelerator bombarding on the
thick carbon target. The neutrons are detected at $0\degree$, $24\degree$,
$48\degree$ and the protons at $135\degree$ in the lab frame. The ratios of the
neutron yield to the proton one have been calculated and can be used as an
effective probe to pin down the resonances. The resonances are found at 1.4
MeV, 1.7 MeV, 2.5 MeV in $^{12}C(d,p)^{13}$C and at 1.6 MeV, 2.7 MeV in
$^{12}$C(d,n)$^{13}$N. This method provides a way to reduce the systematic
uncertainty and helps to confirm more resonances in compound nuclei.
