LLNL 11LDRD.Pdf
About the Cover: The 2011 Laboratory Directed Research and Development project depicted on the cover, “An Intense Laser-Based Positron Source” (10-ERD-044), seeks to further develop the world’s most advanced direct hot-electron diagnostic for high-energy-density physics research. Principal investigator Scott Wilks is laying the science foundation for a new and potentially powerful source of positrons (antimatter counterparts of the electron), which may lead to new approaches for diagnosing experiments in plasma and atomic physics, fusion science, high-energy-density physics, accelerator and particle-beam science, nondestructive interrogation of materials, and astrophysics. These experiments are foundational to the nation’s Stockpile Stewardship Program, which is responsible for maintaining confidence in the country’s nuclear deterrent in the absence of nuclear testing. The figure is part of an integrated computer simulation that shows, for the first time, all the physical effects believed to occur during the production of electrons and positrons using ultra-intense laser beams. Research to date has led to a provisional patent on a novel positron source for conventional and plasma accelerators. UCRL-TR-113717-11 Disclaimer Available to DOE and DOE contractors from the This document was prepared as an account of work sponsored by an agency Office of Scientific and Technical Information of the United States Government. Neither the United States Government, P.O. Box 62, Oak Ridge, TN 37831 Lawrence Livermore National Security, LLC, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility Prices available from (423) 576-8401 for the accuracy, completeness, or usefulness of any information, apparatus, http://www.osti.gov/bridge/ product, or process disclosed, or represents that its use would not infringe privately owned rights.
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