TY - RPRT TI - Proton rings from late-forming ballistic sheath fields AU - Unzicker, B. [The Ohio State University, Columbus, OH (United States)] (ORCID:0009000628891900) AU - Czapla, N. [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:0000000263043134) AU - Ghenuche, P. [Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)] (ORCID:0000000186956641) AU - Stutman, D. [Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)] (ORCID:0000000337405418) AU - Negoita, F. [Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)] (ORCID:0009000441751836) AU - Doria, D. [Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)] (ORCID:0000000187765791) AU - Ur, C. A. [Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)] (ORCID:0000000219970336) AU - Cernaianu, M. O. [Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)] AU - Schumacher, D. W. [The Ohio State University, Columbus, OH (United States)] (ORCID:0000000221713902) PY - 2024 DO - 10.1063/5.0219974 UR - https://www.osti.gov/biblio/2480966 ID - 2480966 ER -