Conditions Leading to the Observation of High-Energy Proton Intensity Enhancements Associated with the Passage of Interplanetary Shocks

David Lario1, Ian G Richardson1,2, Angels Aran3 and Nicolas Wijsen1,2, (1)NASA Goddard Space Flight Center, Heliophysics Science Division, Greenbelt, MD, United States, (2)University of Maryland College Park, Department of Astronomy, College Park, MD, United States, (3)Universitat de Barcelona (UB-IEEC), Departament Física Quàntica i Astrofísica, Institut de Ciències del Cosmos (ICCUB), Barcelona, Spain