Effects of Preformed Plasmas on MeV Electrons and Positrons
Abstract
It has been demonstrated that laser produced relativistic (MeV) electrons interacting with high atomic number (Z) materials can produce electron-positron pairs. One of the key parameters for higher yield of positrons is MeV electron energy distribution. It has been suggested that utilization of preformed plasmas could increase the number of MeV electrons. We have performed a series of measurement to investigate the relation between the prepulse and the electron energy distribution on the Titan laser at Lawrence Livermore National Laboratory. This poster will present experimental and simulation results on the potential of the preformed plasmas to increase electron energy to optimize positron yield.
This work performed under the auspices of the U.S. DOE by LLNL under Contract DE-AC52-07NA27344 and was funded by LDRD #10-ERD-044.- Publication:
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APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2011
- Bibcode:
- 2011APS..DPPNP9106P