[{"id":1,"text":"e-  1959 MeV","data":{"start":[200.0, 300.0, 100.0],"end":[137.9, 297.6, 73.3]},"children":[],"icon":"jstree-file"}, {"id":2,"text":"proton  30 MeV","data":{"start":[200.0, 300.0, 100.0],"end":[197.7, 301.0, 103.8]},"children":[{"id":4,"text":"proton  45 MeV","data":{"start":[197.7, 301.0, 103.8],"end":[197.1, 300.9, 103.8]},"children":[],"icon":"jstree-file"}]}]