Angular Distribution and Yield of the Processp+d→t+π+

Abstract

The angular distribution of the process $p+d\to t+{\pi }^{+}$ has been determined for 340-Mev incident protons from the Berkeley 184-inch synchrocyclotron. The process was identified at one angle by a comparison of measured values with predicted values of the correlated angles, particle ranges, and triton time of flight. During one continuous run differential cross sections were measured at six pion center-of-mass angles ranging from 30° to 150°, with the apparatus set for the predicted correlated angles, minimum ranges, and triton time flight but without further tests of identification. The cross section is constant at about 0.45 microbarns/steradian over pion center-of-mass angles of 180° to 90°. The cross section rises in the forward direction to a value around 5 microbarns/steradian at 0°. The total yield of the process is estimated by numerical integration to be 15 microbarns.