Characterisation of Compact Discs using Time of Flight-Energy Elastic Recoil Detection Analysis

Abstract

The high efficiency, high-repetition-rate operation of an all-solid-state exciter for KrF excimer lasers was investigated. A 12.2 /IS duration current pulse was compressed to 100 ns duration with a three-stage magnetic pulse compressor. An energy of 11.4 J stored in the primary capacitor was transferred, with an energy transfer efficiency as high as 71%. to the 3.0 atm (300 kPa) laser gas mixtures. The maximum KrF laser energy obtained was about 100 mJ with an overall efficiency of 0.87%. An average laser power of 7.1 W was obtained at 100 PPS (6.5 W at 140 PPS). Interface conditions of the exciter and the laser head were also investigated in terms of laser output by changing the output pulse duration and the total value of the peaking capacitors in a charge-transfer-type circuit. 46 50 100

Application Of Time Of Flight-Energy Elastic Recoil Detection For Information-Storage Media Analysis

“…Depending on the heat treatment, the recording material cools to an amorphous or a crystalline state that has low or high reflectivity. D 2 To avoid the effect of non-uniform removal of the lacquer layer, the CD-RW disc was cleaved into lacquer and substrate samples as shown in Fig.…”

Disordering behavior and helium diffusion in He+ irradiated 6H–SiC

“…4 However, there are few ion-beam analytical methods currently available for depth profiling of He. 6 In this study, both RBS/C and ERDA methods were used for analyses of Si disorder and He profiles in He + -irradiated 6H-SiC, respectively. On the other hand, elastic recoil detection analysis (ERDA) with a high-energy heavy-ion beam has also been shown to be a powerful, yet largely nondestructive, technique for profiling the concentration of light elements in solids.…”