engScott, G. G.Carroll, D. C.Hook, S.Liao, G.Liu, H.Mirfayzi, S. R.Rusby, D. R.Selwood, M. P.Spindloe, C.Tolley, M. K.Wagner, F.Zemaityte, E.Astbury, S.Borghesi, M.Kar, S.Li, Y.Roth, M.McKenna, P.Neely, D.Clarke, R. J.Hernandez-Gomez, C.King, M.Alejo, A.Arteaga, I. Y.Dance, R. J.Higginson, A.Dual Ion Species Plasma Expansion from Isotopically Layered Cryogenic Targetsinfo:eu-repo/classification/ddc/530A 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.Physical review letters 120(20), 204801 (2018). doi:10.1103/PhysRevLett.120.204801info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAPS2018info:eu-repo/semantics/openAccessDEhttps://repository.gsi.de/record/218010https://repository.gsi.de/search?p=id:%22GSI-2019-00081%22Researchersinfo:eu-repo/semantics/altIdentifier/pmid/pmid:29864368info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.120.204801info:eu-repo/semantics/altIdentifier/wos/WOS:000433032500013info:eu-repo/semantics/altIdentifier/issn/0031-9007info:eu-repo/semantics/altIdentifier/doi/10.15120/GSI-2019-00081info:eu-repo/semantics/altIdentifier/issn/1079-7114info:eu-repo/semantics/altIdentifier/issn/1092-0145