Ternary particle yields in249Cf(nth,f)

An experiment measuring ternary particle yields in ${}^{249}\mathrm{Cf}{(n}_{\mathrm{th}},f)$ was carried out at the high flux reactor of the Institut Laue-Langevin using the Lohengrin recoil mass separator. Parameters of energy distributions were determined for 27 ternary particles up to ${}^{30}\mathrm{Mg}$ and their yields were calculated. The yields of 17 further ternary particles were estimated on the basis of the systematics developed. The heaviest particles observed in the experiment are ${}^{37}\mathrm{Si}$ and ${}^{37}\mathrm{S};$ their possible origin is discussed.