Patent ID: 8395117

Claim:
A spectrophotometer using medium energy ion, comprising: an ion source 10 generating ions; a collimator 20 collimating the ions generated by the ion source 10 to a parallel beam; an accelerator 30 accelerating the parallel beam; an ion beam pulse generator 40 pulsing the ion beam accelerated by the accelerator 30 to be a bundle of ions; a focusing objective 50 focusing the pulsed ion beam on a specimen 1 ; a detector 60 detecting a spectroscopic signal of ions scattered from the specimen 1 including a time required to detect the scattered ions from the specimen 1 and an energy of the scattered ions from the specimen 1 ; a data analyzer 70 transmitting the spectroscopic signal detected by the detector 60 to a computer to analyze and process data; and a rotating plate 65 for rotating the specimen 1 or the detector 60 , wherein the rotating plate 65 enables the detector to be installed directly under the specimen 1 to detect ions transmitted through the specimen 1 or installed laterally upward from exceeding 0° to below 90° on the specimen 1 at the reference of the direction of the incident pulsed ion beam to detect the scattered ions from the specimen 1 .