| Autor: |
Suk Kyoung Lee, Cudry, Fadia, Yun Fei Lin, Lingenfelter, Steven, Winney, Alexander H., Lin Fan, Wen Lia |
| Předmět: |
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| Zdroj: |
Review of Scientific Instruments; 2014, Vol. 85 Issue 12, p1-8, 8p, 2 Diagrams, 3 Graphs |
| Abstrakt: |
A new time- and position-sensitive particle detection system based on a fast frame CMOS (complementary metal-oxide semiconductors) camera is developed for coincidence ion imaging. The system is composed of four major components: a conventional microchannel plate/phosphor screen ion imager, a fast frame CMOS camera, a single anode photomultiplier tube (PMT), and a high-speed digitizer. The system collects the positional information of ions from a fast frame camera through real-time centroiding while the arrival times are obtained from the timing signal of a PMT processed by a high-speed digitizer. Multi-hit capability is achieved by correlating the intensity of ion spots on each camera frame with the peak heights on the corresponding time-of-flight spectrum of a PMT. Efficient computer algorithms are developed to process camera frames and digitizer traces in real-time at 1 kHz laser repetition rate.We demonstrate the capability of this system by detecting a momentummatched co-fragments pair (methyl and iodine cations) produced from strong field dissociative double ionization of methyl iodide. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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