Effect of solenoidal magnetic field on drifting laser plasma
- Tokyo Institute of Technology, Yokohama 226-8502 (Japan)
- Brookhaven National Laboratory, Upton, NY 11973 (United States) and RIKEN, Wako-shi, Saitama 351-0198 (United States)
- Pennsylvania State University, University Park, PA 16802 (United States)
- Cornell University, Ithaca, NY 14853 (United States)
An ion source for accelerators requires to provide a stable waveform with a certain pulse length appropriate to the application. The pulse length of laser ion source is easy to control because it is expected to be proportional to plasma drifting distance. However, current density decay is proportional to the cube of the drifting distance, so large current loss will occur under unconfined drift. We investigated the stability and current decay of a Nd:YAG laser generated copper plasma confined by a solenoidal field using a Faraday cup to measure the current waveform. It was found that the plasma was unstable at certain magnetic field strengths, so a baffle was introduced to limit the plasma diameter at injection and improve the stability. Magnetic field, solenoid length, and plasma diameter were varied in order to find the conditions that minimize current decay and maximize stability.
- OSTI ID:
- 22116965
- Journal Information:
- AIP Conference Proceedings, Vol. 1525, Issue 1; Conference: 22. international conference on application of accelerators in research and industry, Ft. Worth, TX (United States), 5-10 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Behavior of moving plasma in solenoidal magnetic field in a laser ion source
Confinement of laser plasma by solenoidal field for laser ion source