5 research outputs found
Isotope effects in the harmonic response from hydrogenlike muonic atoms in strong laser fields
High-harmonic generation from hydrogenlike muonic atoms exposed to
ultraintense high-frequency laser fields is calculated. Systems of low nuclear
charge number Z are considered where a nonrelativistic description applies. By
comparing the radiative response for different isotopes we demonstrate
characteristic signatures of the finite nuclear mass and size in the harmonic
spectra. In particular, for Z>1, an effective muon charge appears in the
Schr\"odinger equation for the relative particle motion, which influences the
position of the harmonic cutoff. Cutoff energies in the MeV domain can be
achieved, offering prospects for the generation of ultrashort coherent
gamma-ray pulses.Comment: 11 pages, 5 figure
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Vacuum, matter, antimatter and the problem of cold compression
We discuss the possibility of producing a new kind of nuclear system by putting a few antibaryons inside ordinary nuclei. The structure of such systems is calculated within the relativistic mean-field model assuming that the nucleon and antinucleon potentials are related by the G-parity transformation. The presence of antinucleons leads to decreasing vector potential and increasing scalar potential for the nucleons. As a result, a strongly bound system of high density is formed. Due to the significant reduction of the available phase space the annihilation probability might be strongly suppressed in such systems