Damage induced in LiNbO3 single crystals by GeV gadolinium ions

Low temperature X-ray luminescence of KNbO3 crystals

“…These are related to the simple lightdi usion e ect resulting from the structural modi®cations induced by heavy-ion bombardment. A similar picture has been observed in LiNbO 3 [19] and TeO 2 [20]. However, in the case of fast electron irradiation with energies above 300 KeV in both materials Hodgson et al [21,22] have observed a broad band in visible spectrum range probably due to F-type centre (oxygen vacancy).…”

Influence of Annealing and Irradiation by Heavy Ions on Optical Absorption of Doped Lithium Niobate Crystals

“…For LNO:Fe slight maximum near 21000 cm −1 is observed, which may be associated with Fe 2+ iron ions. In contrast to the irradiation by protons [15], the authors of the paper [18] also observed that irradiation of LNO crystal by 5.17 MeV/u 155 Gd ions at room temperature with fluence extended from 1.5 × 10 11 to 1.2 × 10 12 ions cm −2 produce unstructured additional absorption.…”

“…However, the CC formation in these * corresponding author; e-mail: ppotera@univ.rzeszow.pl crystals under the ion irradiation was studied insufficiently, and was performed practically only for light ions (for example 25 MeV protons, 150 keV Ar + ions) or for low-energy heavy ions (for example 23 keV Au + , 60 keV Cu + ) [14][15][16][17]. The optical absorption of LNO irradiated by swift heavy ions was studied only for 0.8 GeV 155 Gd ions [18] and 3 MeV Cu ions [19].…”

Ion-beam mixing induced by atomic and cluster bombardment in the electronic stopping-power regime

“…The key parameter char- acterizing the irradiation conditions is ϭZ 1 *v 0 /v, where Z 1 * is the effective charge of the incident ion, v its velocity, and v 0 is the Bohr velocity. It has been shown 24 that the kinetic energy E c acquired by the atoms of the lattice is proportional to 8 .…”

“…4 Recent works nevertheless showed that for high electronic excitation levels, inelastic collision processes lead to significant damage in metals 5,6 and in oxides. 7,8 Therefore it could be expected that irradiation at high electronic stopping power of MgO crystals containing metal precipitates would induce some modification of the precipitated phase. Electronic energy losses exceeding 45 keV/nm are difficult to obtain in MgO by irradiation with swift monoatomic ions.…”