{"paper":{"title":"New method to study ion-molecule reactions at low temperatures and application to the H$_2^+$ + H$_2$ $\\rightarrow$ H$_3^+$ + H reaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Fr\\'ed\\'eric Merkt, Hansj\\\"urg Schmutz, Johannes Deiglmayr, Josef A. Agner, Katharina H\\\"oveler, Otto Schullian, Pitt Allmendinger","submitted_at":"2017-05-02T09:22:54Z","abstract_excerpt":"Studies of ion-molecule reactions at low temperatures are difficult because stray electric fields in the reaction volume affect the kinetic energy of charged reaction partners. We describe a new experimental approach to study ion-molecule reactions at low temperatures and present, as example, a measurement of the ${\\rm H}_2^+ + {\\rm H}_2\\rightarrow {\\rm H}_3^+ + {\\rm H}$ reaction with the ${\\rm H}_2^+$ ion prepared in a single rovibrational state at collision energies in the range $E_{\\rm col}/k_{\\rm B} = 5$-60 K. To reach such low collision energies, we use a merged-beam approach and observe "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.00871","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}