(d,Li6) Reactions inC12,O16, andF19at 14.6 MeV

It was found that in the bombardment of light targets such as ${\mathrm{C}}^{12}$, ${\mathrm{O}}^{16}$, and ${\mathrm{F}}^{19}$ with 14.6-MeV deuterons, many-nucleon transfers often occur with relatively large cross sections. Differential cross sections are presented for the ground-state transitions ${\mathrm{C}}^{12}(d, {\mathrm{Li}}^6){\mathrm{Be}}^8$, ${\mathrm{O}}^{16}(d, {\mathrm{Li}}^6){\mathrm{C}}^{12}$, ${\mathrm{F}}^{19}(d, {\mathrm{Li}}^6){\mathrm{N}}^{15}$, and ${\mathrm{F}}^{19}(d, {\mathrm{Be}}^9){\mathrm{C}}^{12}$. All angular distributions show pronounced structure. The ($d$, ${\mathrm{Li}}^6$) reactions leading to the ground states of ${\mathrm{N}}^{15}$, ${\mathrm{C}}^{12}$, and ${\mathrm{Be}}^8$ show asymmetry with respect to $\theta =90\mathrm{}°$, and have total cross sections on the order of 1-4 mb. The similarity of the angular distributions and a relatively minor sensitivity to energy variations suggest that a direct reactions mechanism predominates. Preliminary DWBA (distorted-wave Born approximation) calculations by Drisko, Satchler, and Bassel show qualitative agreement with the data, and support this view. Unique identification of the heavy reaction products was obtained by energy analysis in conjuction with simultaneous analysis of a second parameter, which was either the magnetic rigidity or the time of flight of the heavy ions. Both experimental procedures are described in detail.