Tilted multifoil techniques in pad studies of high spin reaction products

Abstract

Novel techniques used in PAD studies of high spin states populated by conventional fusion evaporation reactions are described. The interaction of the recoiling ions with the exit surfaces of multiple tilted carbon foils induced polarization of the ionic shells. In turn, the hyperfine interaction during flight in vacuum between successive foils affects the nuclear spins in a controlled manner. Systems have been designed for measuring g-factors and for inducing nuclear polarization of high spin isomers. The technique was applied to 10⁺ isomers in ⁵⁴Fe and ¹⁴⁴Gd and nuclear polarizations of 0.18(5) and 0.10(4), respectively, were observed.