Journal Article

GSI-2019-00081

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dual Ion Species Plasma Expansion from Isotopically Layered Cryogenic Targets

Scott, G. G. (Corresponding author) ; Carroll, D. C. ; Astbury, S. ; Clarke, R. J. ; Hernandez-Gomez, C. ; King, M. ; Alejo, A. ; Arteaga, I. Y. ; Dance, R. J. ; Higginson, A. ; Hook, S. ; Liao, G. ; Liu, H. ; Mirfayzi, S. R. ; Rusby, D. R. ; Selwood, M. P. ; Spindloe, C. ; Tolley, M. K. ; Wagner, F.GSI* ; Zemaityte, E. ; Borghesi, M. ; Kar, S. ; Li, Y. ; Roth, M. ; McKenna, P. ; Neely, D.

2018
APS College Park, Md.

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Please use a persistent id in citations: doi:10.1103/PhysRevLett.120.204801  doi:10.15120/GSI-2019-00081

Abstract: A dual ion species plasma expansion scheme from a novel target structure is introduced, in which a nanometer--thick layer of pure deuterium exists as a buffer species at the target--vacuum interface of a hydrogen plasma. Modeling shows that by controlling the deuterium layer thickness, a composite H+ /D+ ion beam can be produced by target normal sheath acceleration (TNSA), with an adjustable ratio of ion densities, as high energy proton acceleration is suppressed by the acceleration of a spectrally peaked deuteron beam. Particle in cell modeling shows that a (4.3 +/- 0.7) MeV per nucleon deuteron beam is accelerated, in a directional cone of half angle 9 degrees. Experimentally, this was investigated using state of the art cryogenic targetry and a spectrally peaked deuteron beam of (3.4 +/- 0.7) MeV per nucleon was measured in a cone of half angle 7 degrees-9 degrees, while maintaining a significant TNSA proton component.

Note: "Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI."

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Contributing Institute(s):

1. Plasmaphysik / PHELIX (PPH)

Research Program(s):

1. 6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621) (POF3-621)

Appears in the scientific report 2018

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