D. Nayak et al., Synergistic extraction of neodymium and carrier-free promethium by the mixture of HDEHP and PC88A, J RAD NUCL, 240(2), 1999, pp. 555-560
Carrier free promethium was produced by proton activation in neodymium targ
et. Extraction behavior of both the elements were studied by HDEHP. A prono
unced synergism had been observed by the binary mixture of HDEHP and PC88A.
Presence of H2O2 in aqueous phase also increases the separation factor.