0000000000046902
AUTHOR
U. Tharun
Digitale Fenster für γ-γ-Koinzidenzmessungen mit Halbleiterdetektoren
Zusammenfassung Digital windows have been designed and built to avoid the disadvantages of normal single channel analysers setting the gate in γ-γ-coincidence experiments with two Ge(Li)-detectors.
A system for rapid radiochemical separations from aqueous solutions
Abstract For the study of short-lived fission products, an automatic system has been developed that allows to irradiate aqueous solutions sealed in polystyrene capsules, to separate chemically the radioactive products formed, and to start counting, all within a few seconds. Irradiations are performed in a pneumatic tube system installed in a horizontal beam hole of a reactor. The capsule is projected into a separation apparatus where it breaks by impact. Its content is then sucked through a thin reactive layer that takes up the desired product. The whole sequence of irradiation, transportation, chemical separation, and counting is controlled by automatic timers. The adaption of this techniq…
Digitaler Spektrumstabilisator für schnelle Analog-Digital-Konverter
Abstract A versatile spectrum stabilizer is described, suitable for all ADC's with a digital parallel output and a pilot pulse at the end of the conversion. The stabilizer is especially developed for a 100 MHz ADC, but it is independent of the digitizing rate and the mode of conversion. The unit has a maximum cyclus time of 2 μsec and permits a parallel transfer rate of 500 kHz. The stabilizer corrects the effects of gain drift and is insensitive to statistical errors.