I. N. Ogorodnikov

TL;DR: In this paper, a coordinated investigation of the dynamics of electronic excitations in LiB3O5 and Li2B4O7 crystals by low-temperature luminescence VUV spectroscopy performed with sub-nano-second resolution under synchrotron photoexcitation is reported.

Abstract: The paper presents the results of a complex investigation into the dynamics of electronic excitations in the CsLiB6O10 crystal (CLBO) by low-temperature luminescence VUV spectroscopy with subnanosecond time resolution under photoexcitation by synchrotron radiation. Strong broad-band low-temperature photoluminescence (PL) of the CLBO crystal has been revealed. Data on the PL decay kinetics, time-resolved PL and PL excitation spectra, and reflectance spectra at 9.3 and 295 K are obtained. It is shown that the intrinsic PL of CsLiB6O10 in the 3.5-eV range is caused by radiative annihilation of self-trapped excitons. The channels of creation and decay of relaxed and unrelaxed excitons in cesium lithium borate are discussed. The band gap of CLBO is estimated as Eg≈8.5 eV. A monotonic increase in the excitation efficiency of intrinsic CLBO luminescence at exciting photon energies above 19 eV is identified as the photon multiplication process.

TL;DR: In this article, an EPR study of the O− hole center in LiB3O5 (lithium triborate) crystals is presented, and the most probable model for the center in lithium borate crystals is the following: a hole trapped by the center is localized on a p-orbital of an oxygen ion linking two boron atoms with coordination numbers three and four near a negatively charged stabilizing structural defect.

TL;DR: In this article, the steady-state X-ray luminescence and thermally stimulated recombination processes in lithium borate crystals Li6Gd(BO3)3 and Li 6Gd (BO3)-Ce have been investigated in the temperature range of 90-500 K.

TL;DR: In this paper, the TSL study of the main dosimetric peak region from BeO single crystals doped with boron or lithium impurities in different concentrations is presented.