%0 Journal Article %T Gamma Ray Cherenkov-Transition Radiation %A M. A. Aginian %A K. A. Ispirian %A M. Ispiryan %J Physics %D 2013 %I arXiv %R 10.1209/0295-5075/104/24002 %X The production of gamma-ray Cherenkov-transition radiation (GCTR) by charged particles in the photon energy region 0.8 - 2 MeV is studied theoretically using the results of the recent discovery that in the above mentioned region the dielectric constant or the refraction index of some materials is greater than 1 due to Delbruck scattering on Coulomb field of nuclei. Using the results of the carried out numerical calculations, the possibility of observing GCTR and some of its applications are discussed. %U http://arxiv.org/abs/1302.5208v2