N. Popov

Estimation of the nuclear fusion rate in the dμ3He molecule

Abstract The rate of nuclear synthesis from the state of the total angular momentum J = 0 of the d μ 3 He molecule has been estimated by two methods, yielding the value λ f ∼ 10 6 s −1 .

Measurement of the fusion rate in μd3He

Many atomic and molecular processes may occur after a muon has been stopped in a mixture of hydrogen and helium isotopes. In particular, the muonic molecule μd3He can be formed. This molecule either decays or undergoes muon catalyzed fusion. Theory predicts a fusion rate much lower than the decay rate; moreover, the various theoretical predictions differ from each other by several orders of magnitude.With the experiment presented here we intend to measure the effective fusion rate via the detection of the 14.7 MeV fusion proton. A new target and gas mixing system, designed at JINR, were used in a ten-day test run at PSI. The fusion protons and products from other transfer and background reactions were measured with several different detectors (plastic scintillators, BGO, Germanium, neutron, and Silicon detectors).The formation rate of the μd3He molecule and an upper limit for the effective fusion rate have been measured and are presented here.

Gamma-ray and electron spectra from decay of hydrogen-helium muonic molecules

Spectra of γ-rays and Auger electrons emitted during decay of J = 1 and J = 0 states of hydrogen-helium muonic molecules have been calculated using the Born-Oppenheimer approximation. A comparison of the calculated γ-ray spectra with experiment is presented. Experimental data allow one to conclude that the J = 1 state is more populated than the J = 0 one.

Quasiresonant muon transfer in deuterium-tritium mixtures

Abstract The population of the ground state of muonic deuterium is calculated taking into account the charge exchange from the excited states to tritium nuclei at collision energies ϵ 0 =0.5 and 1 eV. The results of the calculation are compared with experiment.

Experimental Search for μd 3He Fusion

AbstractThe vast majority of muon catalyzed fusion research has been concerned with muonic molecules of hydrogen isotopes only, since the dynamics of higher-Z muonic atoms in general preclude the formation of molecular systems. In the specific case of hydrogen–helium mixtures, bound muonic molecular states can exist, and thus it is possible to search for the reactionμd 3He

TRANSPORT CROSS SECTIONS FOR EXCITED MUONIC HYDROGEN

\xrightarrow{{\tilde \lambda f}}

Muon transfer from mesic hydrogen to lithium and the atomic intershell correlations

μ+α(3.66 MeV)+p(14.64 MeV).Until recently, the theoretical predictions for the nuclear fusion rate in the μd 3He molecule,