Search for the Radiative Capture d+d->^4He+\gamma Reaction from the dd\mu Muonic Molecule State

A search for the muon catalyzed fusion reaction dd --> ^4He +\gamma in the dd\mu muonic molecule was performed using the experimental \mu CF installation TRITON and NaI(Tl) detectors for \gamma-quanta. The high pressure target filled with deuterium at temperatures from 85 K to 800 K was exposed to the negative muon beam of the JINR phasotron to detect \gamma-quanta with energy 23.8 MeV. The first experimental estimation for the yield of the radiative deuteron capture from the dd\mu state J=1 was obtained at the level n_{\gamma}\leq 2\times 10^{-5} per one fusion.Comment: 9 pages, 3 Postscript figures, submitted to Phys. At. Nuc

Influence of the Epithermal Effects on the MCF Steady State

This work is devoted to the correct interpretation of the steady-state parameters of the muon catalyzed fusion (MCF) process in a $D/T$ mixture. Previously the influence of the {\it epithermal} effects ($dt\mu$-molecule formation by \char 165 hot\char 245, non-thermalized $t\mu$ atoms) on the steady-state parameters was studied only for measurements with a low-density target (density $\varphi=0.01$ relative to the liquid hydrogen density). We suggest a new method allowing direct determination of the necessary corrections to the MCF cycling rate for high-density data ($\varphi \geq 0.4$)

Measurement of the Magnetic Moment of the Negative Muon Bound in Different Atoms

Theoretical calculations show that the magnetic moment of the electron and the negative muon in a bound state in an atom should be different from the magnetic moment of the free particle due to their relativistic motion. There are also additional radiative corrections to the magnetic moment of a bound electron (muon) due to the presence of the strong Coulomb field of the atomic nucleus. The results of the measurements of the magnetic moment of the negative muon in carbon, oxygen, magnesium, silicon, sulfur, and zinc are presented. The accuracy of the measurements makes it possible to prove the dependence of the relativistic correction to the magnetic moment of a bound muon on Z of the atom

The Isotopic Effect in the Nuclear Capture of Negative Muons in Xenon

The lifetime of negative muons in 1sstate of ^129 Xe has been measured for the first time. The nuclear capture rate of muon for ^129 Xe is compared with the analogous results for ^132,136 Xe isotopes. The noticeable dependence of the nuclear capture rate of muon on mass number for the abovementioned isotopes is observed. The experimental results are compared with the ones calculated according to the semiempirical Goulard Primakoff formula