AN ENERGY DISPERSIVE SPECTROSCOPY (EDS) X-RAY MICROANALYSIS SYSTEM. THE SYSTEM COMPRISES OF AN X-RAY DETECTOR, WHICH DETECTS AND CONVERTS X-RAYS INTO ELECTRONIC SIGNALS, A PULSE PROCESSOR THAT MEASURES THE ELECTRONIC SIGNALS TO DETERMINE THE ENERGY OF EACH X-RAY DETECTED, AND AN ANALYZER THAT DISPLAYS AND INTERPRETS THE X-RAY DATA. THE SYSTEM IS USED WITH SCANNING ELECTRON MICROSCOPE (SEM), TRANSMISSION ELECTRON MICROSCOPE (TEM) OR FOCUSSED ION BEAM (FIB). THE EDS DETECTOR CONVERTS THE ENERGY OF A SINGLE X-RAY PHOTON INTO A STEP OF PROPORTIONAL SIZE ON A VOLTAGE RAMP USING A SEMICONDUCTOR CRYSTAL AND FIELD EFFECT TRANSISTOR (FET)-PREAMPLIFIER. THE SYSTEM DOES NOT GENERATE X-RAYS.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S: GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 9030 - OSCILLOSCOPES, SPECTRUM ANALYSERS AND OTHER INSTRUMENTS AND APPARATUS FOR MEASURING OR CHECKING ELECTRICAL QUANTITIES, EXCLUDING METERS OF HEADING 9028; INSTRUMENTS AND APPARATUS FOR MEASURING OR DETECTING ALPHA, BETA, GAMMA, X-RAY, COSMIC OR OTHER IONISING RADIATION GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 9030 10 - INSTRUMENTS AND APPARATUS FOR MEASURING OR DETECTING IONISING RADIATION TARIC 90301000 90 - OTHER THAN FOR USE IN CIVIL AIRCRAFT ALSO CLASSIFIED IN ACCORDANCE WITH:- HARMONIZED SYSTEM EXPLANATORY NOTES (HSEN) (A) TO HEADING 90.30