Spontaneous and Stimulated Photon Emission in Crystaline Undulators

Channeling and Radiation in Periodically Bent Crystals

“…Moreover, we state that one will fail to construct a CU basing on the estimates presented in [50,69,87,133,138]. In what follows we reproduce critical analysis, carried out in [161,165], of the statements and the estimates made in the cited papers.…”

“…4.15, Sects. However, at this stage it is necessary to take into account, that according to the channeling condition, see first equation in (4.60), higher energies require larger values of the undulator period λ u , which will partly compensate the growth of the photon energy 4 The attenuation is negligible for very low photon energies, ω 10 eV, see (4.20), which, in principle, are accessible by means of CU based on the heavy-projectile channeling [160,161,163,165]. 1.2) for ε up to tens GeV, then for a heavy projectile the range will be downgraded to tens keV at best in the case of muon, and to hundreds of eV for heavier projectiles.…”

“…In [156] it was shown, that it is possible to separate the stimulated photon emission in the CU from the ChR in the regime of large bending amplitudes a ≤ d. Then, the scheme illustrated by Fig. Following [156,165,184] we will call this scheme as a Gamma-laser. Following [156,165,184] we will call this scheme as a Gamma-laser.…”