Qindeel, Rabia and Mat Daud, Yaacob and Nur-Shahidah, Nur-Shahidah and Bidin, Noriah (2011) Comparison of Al and Cu ions emissions by Nd:YAG laser matter interaction. Current Nanoscience, 7 (4). pp. 628-632. ISSN 1573-4137
Official URL: http://dx.doi.org/10.2174/157341311796196826
The infrared radiation from Nd:YAG laser (1604 nm, 8ns, 125mJ, 15.6MW) is focused by IR lens (20cm) to irradiate Cu and Al (99.99%) target in air. The angular distribution and arrival of ions are collected by Faraday Cups (FC). For anisotropic investigation, the cups are arranged at different positions (5cm and 10cm) from the targets at different angles (5° , 30° , 45° , 60° and 90° ) with respect to the normal on targets surface. Faraday Cups are biased at -100V and the ion current signals are obtained on Tektronix TDS 3054B Digital Storage oscilloscope (500 MHz) through integrated circuit. The average kinetic energy of ions is also calculated. Maximum arrival rate of ions is observed at angle 5° and minimum ions flux is at angle 90° to normal on the target surface. The results show that the plume is peaked strongly in forward direction. The laser matter interaction is good for the laser based ion sources generation, which can produce a collimated beam of ions because of forward peaking.
|Uncontrolled Keywords:||faraday cups, kinetic energy of ions, copper and aluminum plasma, forward peaking, YAG laser matter interaction, Cu ions emissions, Al ions emissions|
|Deposited By:||Liza Porijo|
|Deposited On:||30 Nov 2012 00:45|
|Last Modified:||30 Nov 2012 00:45|
Repository Staff Only: item control page