[{"id":1,"text":"e-  69 MeV","data":{"start":[200.0, 300.0, 100.0],"end":[201.9, 305.1, 136.4]},"children":[],"icon":"jstree-file"}, {"id":2,"text":"proton  33 MeV","data":{"start":[200.0, 300.0, 100.0],"end":[199.9, 298.6, 100.6]},"children":[],"icon":"jstree-file"}]