POLARIZATION OF NEUTRONS FROM B-11(D,N)C-12 REACTION AT 2 MEV

The polarization of five groups of neutrons has been measured at 2.0-MeV deuteron bombarding energy for the B11(d,n)C12 reaction corresponding to the ground, 4.43-, 7.66-, 9.66-, and 12.76-MeV states of C12. A liquid-helium time-of-flight neutron polarimeter was used to make the measurements. The polarization of the neutrons to the ground state and first excited state in C12 is positive at forward angles and negative at back angles. The polarization of neutrons to the 7.66-MeV level in C12 is negative for angles less than 130°. The polarization of neutrons to the 9.66- and 12.66-MeV levels is negative at forward angles and positive beyond 50°. © 1969 The American Physical Society.