Differential cross sections have been measured as functions of angle and bombarding energy in the region from 1 to 2 MeV for the following reactions: (1) ${\mathrm{N}}^{14}(t, t){\mathrm{N}}^{14}$; (2) ${\mathrm{N}}^{14}(t, \alpha ){\mathrm{C}}^{13}$ going to the ground state and the 3.09-MeV state in ${\mathrm{C}}^{13}$; (3) ${\mathrm{N}}^{14}(t, d){\mathrm{N}}^{15}$ going to the ground state of ${\mathrm{N}}^{15}$; and (4) ${\mathrm{N}}^{14}(t, p){\mathrm{N}}^{16}$ going to the ground state and the 0.120-, 0.295-, and 0.392-MeV states of ${\mathrm{N}}^{16}$. The total cross sections for the last three of these reactions at 2 MeV are: (2) 11 and 6 mb; (3) 48 mb; and (4) 7, 4, 9, and 8 mb, respectively. The energy and angular behavior of the differential cross sections suggest that most of these reactions proceed predominantly by direct interactions. The large absolute value of the cross section for the ${\mathrm{N}}^{14}(t, d_{\mathrm{o}}){\mathrm{N}}^{15}$ reaction, as well as the energy and angular behavior of the differential cross section, suggest that this reaction may proceed by a cluster exchange process. Distorted-wave Born approximation (DWBA) calculations provide satisfactory fits to the ($t$, ${\alpha }_{\mathrm{o}}$) angular distribution, but not the ($t$, $d_{\mathrm{o}}$). Plane-wave calculations including exchange stripping give more acceptable fits to the ($t$, $d_{\mathrm{o}}$) data.

• Received 16 December 1963

DOI:https://doi.org/10.1103/PhysRev.134.B577