Muon spectrum and convoy effects after muon-catalyzed fusion

We study final-state interactions of the muon after muon-catalyzed D-T fusion reaction with the ± particle and with target matter. The yield of convoy muons, traveling with the ± particle but remaining unbound is calculated. Energy loss in the dense target may lead to capture of a fraction of these muons into outer shells of the ± particle. We show that the final capture probability can be strongly density dependent.