Multi-needle counter C.F. (Cathode Focusing) used to detect the thermo-stimulated exo-emissive (T.S.E.E.)

The aim of the results obtained is to show that cathode focusing multi-needles detectors are very straightforwardly adapted to the detection of the thermostimulated exoelectronic emission. The prototype used here results from a small scale laboratory manufacture and does not make use of any selected material. Nevertheless, its use highlights certain characteristics which may appear to be advantageous with an intensive operation in view: simple fabrication, high voltage of moderate value, solidity reducing maintenance to straightforward cleaning (in the case of the analysis of pulverulent deposits), large counting dynamics, low sensitivity to the pollution of the gas mixture, and the possibility of obtaining large detecting surfaces capable of taking into account the cartography of a large emitting deposit or numerous regrouped small individual deposits