P. Iacconi et al., PHOTOINDUCED EFFECT IN ALPHA-ALUMINA - CHARACTERIZATION BY TSEE METHOD, Physica status solidi. a, Applied research, 163(2), 1997, pp. 337-348
A study of Thermally Stimulated Exoelectron Emission (TSEE) obtained f
rom alpha-alumina samples after X-ray irradiation at 300 K followed by
UV elicitation at 77 K is reported. The observed results, called phot
oinduced TSEE (PITSEE) are compared with similar phenomena occurring i
n thermoluminescence (PITL) and thermally stimulated conductivity (PIT
SC). Under these conditions, two peaks at about 225 and 270 K are rege
nerated. The process of regeneration is described in terms of hole tra
nsfer and a two-centre Auger mechanism.