Stripping Effects in the ReactionsC12(He3, p)N14andC12(He3, d)N13at 13.9 Mev

Abstract

Angular distributions have been measured for the reactions ${\mathrm{C}}^{12}({\mathrm{He}}^3, p){\mathrm{N}}^{14}$ and ${\mathrm{C}}^{12}({\mathrm{He}}^3, d){\mathrm{N}}^{13}$ using the cyclotron 14-Mev ${\mathrm{He}}^3$ beam. Assuming that the (${\mathrm{He}}^3$, $p$) reaction proceeds by the stripping of a deuteron in either its singlet or triplet state from the ${\mathrm{He}}^3$ nucleus, reasonable fits to the angular distributions were obtained using a ${\left[j_L\right(Q{r}_0\left)\right]}^2$ dependence. For the transitions to the $1^{+}$, $T=0\mathrm{}$ ground and second excited states of ${\mathrm{N}}^{14}$, $L=2\mathrm{}$, $r_0=6.0\mathrm{}$f, and $L=0\mathrm{}$, $r_0=5.7\mathrm{}$f, respectively. This is in accord with a predominant ${}_{}{}^3{}_{}{}^{}D_1^{}{}_{}{}^{}$ ground state and predominant ${}_{}{}^3{}_{}{}^{}S_1^{}{}_{}{}^{}$ second excited state configuration for ${\mathrm{N}}^{14}$. For the transition to the $0^{+}$, $T=1\mathrm{}$ first excited state, $L=0\mathrm{}$ and $r_0=5.7\mathrm{}$f. Butler's stripping theory for the (${\mathrm{He}}^3$, $d$) reaction with $l_p=1\mathrm{}$ and $r_0=5.8\mathrm{}$f accounts reasonably well for the ${\mathrm{C}}^{12}({\mathrm{He}}^3, d){\mathrm{N}}^{13}$ angular distribution.