Muon-catalyzed D-T fusion at low temperature

Muon-catalyzed deuterium-tritium fusion was investigated within a wide range of mixtures in liquid and gas (23--35 K) by detection of fusion neutrons. Our improved analysis includes hyperfine effects and allows a clear separation of intrinsic dt sticking ωₛ from kinetic effects. Strongly density-dependent cycle rates with values up to 1.45×{}10⁸ s^-1, yields of 113 fusions per muon, and ωₛ=(0.45±{}0.05)% are found. In comparison with previous experiments we confirm that ωₛ in liquid is lower than theoretically predicted, but do not find a strong dependence on either cₜ or density.