The tritium production cross section has been measured for ${\mathrm{Li}}^6$ bombarded by deuterons from 0.4 Mev to 4.0 Mev. The cross section rises fairly rapidly to 190 millibarns near 1 Mev, then more slowly to 290 millibarns near 4 Mev. The cross section for ${\mathrm{Li}}^7$ rises steeply from the 1.27 Mev threshold to 95 millibarns at 2.4 Mev; then more slowly to about 165 millibarns at 4.1 Mev.

• Received 23 August 1954

DOI:https://doi.org/10.1103/PhysRev.97.753