The ⁸⁹(d, n₀)⁹⁰Zr reaction and coulomb effects in stripping reactions

The vector analysing power of the ⁸⁹Y(d, n₀)⁹⁰Zr reaction has been measured for lab angles between 2.5° and 45° at a deuteron energy of 11 Me V. The angular momentum and parity of the transferred proton are known to be j_p^π = 1 2^-, but the angular dependence of the vector analysing power is similar to that observed in (d,p) transitions with j_n^π = 3 2^-. The results of distortedwave calculations are in qualitative agreement with the measured angular dependence of the (d, n) vector analysing power and predict a j-dependence for (d, n) reactions similar to that observed in (d, p) reactions. These calculations indicate that the observed difference in the vector analysing power between (d, n) and (d, p) reactions arises primarily from Coulomb effects in the outgoing channel.