Towards pump probe experiments of defect dynamics with short ion beam pulses

Journal Article · Tue Jan 01 00:00:00 EST 2013 · Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

DOI:https://doi.org/10.1016/j.nimb.2013.05.074· OSTI ID:1127000

Schenkel, T. ^[1]; Lidia, S. ^[1]; Weis, C. D. ^[1]; Waldron, W. L. ^[1]; Schwartz, J. ^[1]; Minor, Andrew ^[1]; Hosemann, P ^[2]; Kwan, J. W. ^[1]

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1. Lawrence Berkeley National Laboratory (LBNL)
2. University of California, Berkeley

A novel, induction type linear accelerator, the Neutralized Drift Compression eXperiment (NDCX-II), is currently being commissioned at Berkeley Lab. This accelerator is designed to deliver intense (up to 3 1011 ions/pulse), 0.6 to 600 ns duration pulses of 0.05 1.2 MeV lithium ions at a rate of about 2 pulses per minute onto 1 10 mm scale target areas. When focused to mm-diameter spots, the beam is predicted to volumetrically heat micrometer thick foils to temperatures of 30,000 K. At lower beam power densities, the short excitation pulse with tunable intensity and time profile enables pump probe type studies of defect dynamics in a broad range of materials. We briefly describe the accelerator concept and design, present results from beam pulse shaping experiments and discuss examples of pump probe type studies of defect dynamics following irradiation of materials with intense, short ion beam pulses from NDCX-II.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1127000
• Journal Information: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 315; ISSN 0168-583X
• Country of Publication: United States
• Language: English