17 Scott, G. G. 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. Zemaityte, E. Borghesi, M. Kar, S. Li, Y. Roth, M. McKenna, P. Neely, D. PPH Physical review letters Physical review letters APS College Park, Md. 1079-7114 10.1103/PhysRevLett.120.204801 English 204801 20 120 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. "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." ; PUB:(DE-HGF)16, ; 0, ; WOS:000433032500013 Journal Article 2018 GSI-2019-00081 2018 pmid:29864368 https://repository.gsi.de/record/218010 https://doi.org/10.1103/PhysRevLett.120.204801 <Go to ISI>://WOS:000433032500013