[{"id":1,"text":"e-  53 MeV","data":{"start":[200.0, 300.0, 100.0],"end":[205.1, 303.4, 188.5]},"children":[],"icon":"jstree-file"}, {"id":2,"text":"proton  156 MeV","data":{"start":[200.0, 300.0, 100.0],"end":[194.4, 303.8, 101.5]},"children":[],"icon":"jstree-file"}]