{"paper":{"title":"Rotational laser spectroscopy of the $X^1\\Sigma_g^+\\rightarrow B^1\\Pi_u$ transition of $\\text{Rb}_2$ molecule in a supersonic beam: As good as it gets","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Amrendra Pandey, David Rodr\\'iguez Fern\\'andez, Jaime Javier Borges M\\'arquez, Luis Gustavo Marcassa, Manuel Alejandro Lefr\\'an Torres, Marcos Roberto Cardoso, Nadia Bouloufa-Maafa, Olivier Dulieu, Romain Vexiau","submitted_at":"2026-08-09T20:55:28Z","abstract_excerpt":"High-resolution laser spectroscopy of the $^{85}\\mathrm{Rb}_2$, $^{85}\\mathrm{Rb}^{87}\\mathrm{Rb}$, and $^{87}\\mathrm{Rb}_2$ isotopologues has been performed in a supersonic molecular beam using a continuous-wave (cw) tunable diode laser. A total of 958 rovibronic transitions were recorded up to $7~\\mathrm{cm}^{-1}$ below the vibrational band heads of the $X^1\\Sigma_g^+(v''=0)\\rightarrow B^1\\Pi_u(v'=1,2)$ and $X^1\\Sigma_g^+(v''=1)\\rightarrow B^1\\Pi_u(v'=1)$ bands, with a spectral resolution of $3.3\\times10^{-4}$~cm$^{-1}$. Although restricted to the $v'=1$ and $v'=2$ vibrational levels of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.08912","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2608.08912/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}