Sv. Nistor et al., ELECTRON AND HOLE TRAPPING IN PBCL2 AND PBCL2-TL CRYSTALS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 141(1-4), 1998, pp. 538-541
Formation of primary paramagnetic point defects under low temperature
X-ray irradiation have been studied by ESR and optical absorption in p
ure and thallium doped PbCl2 single crystals. Besides Pb-2(3+) self-tr
apped electron (STEL) centers the PbCl2 : Tl crystals exhibit trapped-
electron (PbTl)(+)-type centers. Based on production properties of par
amagnetic centers it is suggested that besides forming Tl-2 divided by
centers the holes are self trapped at pairs of neighbouring Cl- anion
s resulting in V-k type centers with various orientation and length of
the Cl-Cl axis. (C) 1998 Published by Elsevier Science B.V. All right
s reserved.