{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T11:07:00Z","timestamp":1753873620676,"version":"3.41.2"},"reference-count":28,"publisher":"AIP Publishing","issue":"18","funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["CHE 12-13811","DGE 11-44245 FLLW"],"award-info":[{"award-number":["CHE 12-13811","DGE 11-44245 FLLW"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000104","name":"National Aeronautics and Space Administration","doi-asserted-by":"publisher","award":["NNX13AE62G"],"award-info":[{"award-number":["NNX13AE62G"]}],"id":[{"id":"10.13039\/100000104","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2016,5,14]]},"abstract":"<jats:p>Velocity Modulation Spectroscopy (VMS) is arguably the most important development in the 20th century for spectroscopic study of molecular ions. For decades, interpretation of VMS lineshapes has presented challenges due to the intrinsic covariance of fit parameters including velocity modulation amplitude, linewidth, and intensity. This limitation has stifled the growth of this technique into the quantitative realm. In this work, we show that subtle changes in the lineshape can be used to help address this complexity. This allows for determination of the linewidth, intensity relative to other transitions, velocity modulation amplitude, and electric field strength in the positive column of a glow discharge. Additionally, we explain the large homogeneous component of the linewidth that has been previously described. Using this component, the ion mobility can be determined.<\/jats:p>","DOI":"10.1063\/1.4948740","type":"journal-article","created":{"date-parts":[[2016,5,13]],"date-time":"2016-05-13T17:00:30Z","timestamp":1463158830000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["Quantitative velocity modulation spectroscopy"],"prefix":"10.1063","volume":"144","author":[{"given":"James N.","family":"Hodges","sequence":"first","affiliation":[{"name":"University of Illinois 1 Department of Chemistry, , Urbana, Illinois 61801, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1022-7295","authenticated-orcid":false,"given":"Benjamin J.","family":"McCall","sequence":"additional","affiliation":[{"name":"University of Illinois 1 Department of Chemistry, , Urbana, Illinois 61801, USA"},{"name":"University of Illinois 2 Departments of Physics and Astronomy, , Urbana, Illinois 61801, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"317","published-online":{"date-parts":[[2016,5,13]]},"reference":[{"key":"2023062521082691200_c1","doi-asserted-by":"publisher","first-page":"727","DOI":"10.1103\/PhysRevLett.50.727","volume":"50","year":"1983","journal-title":"Phys. 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