Abstract: A method for using photoluminescence to identify defects in a sub-surface region of a sample includes performing a first probe of the sample. A first data set, based on the first probe, is produced indicating defects located primarily in a surface layer of the sample. A second data set, based on a second probe, is produced indicating defects located in both the surface layer and a sub-surface region of the sample. The first data set is subtracted from the second data set to produce a third data set indicating defects located primarily in the sub-surface region of the sample. The first data set may optionally be normalized relative to the second data set before performing the subtraction. The first and second probes may advantageously be performed using a first laser and a second laser, respectively, having different wavelengths from each other.

Abstract: An apparatus and a corresponding method for reading out a storage phosphor plate (2) with an insertion device for inserting a cassette (1) in which a movably disposed support (3) is located, on top of which the storage phosphor plate (2) lies, a read-out device (20) for reading out the storage phosphor plate (2) and a conveyance device (11, 12) which takes the storage phosphor plate (2) from the support (3) and conveys it in a first direction (R) to the read-out device (20). In order to achieve the most precise and reliable alignment possible of the storage phosphor plate (2) relative to the read-out device (20) in a simple way, a positioning device (13) is provided for shifting the support (3), on which the storage phosphor plate (2) lies, in a second direction (A) which is different from the first direction (R) so that the support (3) and the storage phosphor plate (2) are aligned relative to the read-out device (20).

Abstract: In an analytical instrument having a radiation detector, such as an electron microscope with an X-ray detector, a thermoelectric element (such as one or more Peltier junctions) is driven by a cooling power supply to cool the detector and thereby decrease measurement noise. Oil condensates and ice can then form on the detector owing to residual water vapor and vacuum pump oil in the analysis chamber, and these contaminants can interfere with measurement accuracy. To assist in reducing this problem, the thermoelectric element can be powered in the reverse of its cooling mode, thereby heating the detector and evaporating the contaminants. After the detector is cleared of contaminants, it may again be cooled and measurements may resume. Preferably, the thermoelectric element is heated by a power supply separate from the one that provides the cooling power, though it can also be possible to utilize a single power supply to provide both heating and cooling modes.