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Inst."],"published-print":{"date-parts":[[2022,2,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>In this work, a mass spectrometer residual gas analyzer\n  (RGA) was used to determine the ionization thresholds (ionization\n  energy and appearance energy) in trimethylamine (TMA,\n  (CH<jats:sub>3<\/jats:sub>)<jats:sub>3<\/jats:sub>N), as well as the relative abundance of the ions\n  produced by electron impact in the 7.5\u201370 eV electron energy\n  range. The ten most intense peaks in the RGA mass spectra,\n  corresponding to the most abundant ions formed by electron impact at\n  70 eV in TMA, were analyzed. The ionization energy for TMA, as\n  assessed by this experiment, is 7.9 \u00b1 0.2 eV and it is the\n  threshold of formation of the C<jats:sub>3<\/jats:sub>H<jats:sub>9<\/jats:sub>N<jats:sup>+<\/jats:sup> ion. This ion\n  species is the most abundant one below 18 eV electron impact\n  energy, being surpassed by the C<jats:sub>3<\/jats:sub>H<jats:sub>8<\/jats:sub>N<jats:sup>+<\/jats:sup> ion above this\n  energy.\n\n  In order to assess the method used, methane (CH<jats:sub>4<\/jats:sub>), whose\n  ionization properties are well established, was previously\n  studied. The agreement between the results obtained for CH<jats:sub>4<\/jats:sub> and\n  those found in the literature provided the validation of the\n  experimental method used in this work.<\/jats:p>","DOI":"10.1088\/1748-0221\/17\/02\/p02031","type":"journal-article","created":{"date-parts":[[2022,2,24]],"date-time":"2022-02-24T11:06:20Z","timestamp":1645700780000},"page":"P02031","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Determination of ionizing threshold of trimethylamine ions with a high resolution RGA mass spectrometer"],"prefix":"10.1088","volume":"17","author":[{"given":"A.M.F.","family":"Trindade","sequence":"first","affiliation":[]},{"given":"J.","family":"Escada","sequence":"additional","affiliation":[]},{"given":"M.","family":"Rajado Silva","sequence":"additional","affiliation":[]},{"given":"F.I.G.M.","family":"Borges","sequence":"additional","affiliation":[]},{"given":"F.P.","family":"Santos","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2022,2,23]]},"reference":[{"key":"bc4ca4238a0b923820dcc509a6f75849b","doi-asserted-by":"publisher","DOI":"10.1088\/1748-0221\/8\/10\/C10001","article-title":"A plan for directional dark matter sensitivity in high-pressure xenon detectors through the addition of wavelength shifting gaseous molecules","volume":"8","author":"Gehman","year":"2013","journal-title":"JINST"},{"key":"bc81e728d9d4c2f636f067f89cc14862c","doi-asserted-by":"publisher","DOI":"10.1016\/j.nima.2015.08.033"},{"key":"beccbc87e4b5ce2fe28308fd9f2a7baf3","doi-asserted-by":"publisher","DOI":"10.1088\/1748-0221\/11\/03\/C03041","article-title":"Measurement of scintillation and ionization yield with high-pressure gaseous mixtures of Xe and TMA for improved neutrinoless double beta decay and dark matter searches","volume":"11","author":"Nakajima","year":"2016","journal-title":"JINST"},{"key":"ba87ff679a2f3e71d9181a67b7542122c","doi-asserted-by":"publisher","DOI":"10.1088\/1748-0221\/9\/04\/C04015","article-title":"Characterization of a medium size Xe\/TMA TPC instrumented with microbulk Micromegas, using low-energy \u03b3-rays","volume":"9","author":"\u00c1lvarez","year":"2014","journal-title":"JINST"},{"key":"be4da3b7fbbce2345d7772b0674a318d5","doi-asserted-by":"publisher","DOI":"10.1088\/1748-0221\/9\/03\/P03010","article-title":"Description and commissioning of NEXT-MM prototype: first results from operation in a Xenon-Trimethylamine gas mixture","volume":"9","author":"\u00c1lvarez","year":"2014","journal-title":"JINST"},{"key":"b1679091c5a880faf6fb5e6087eb1b2dc","doi-asserted-by":"publisher","DOI":"10.1088\/1748-0221\/12\/07\/P07007","article-title":"Experimental studies on ion mobility in xenon-trimethylamine mixtures","volume":"12","author":"Trindade","year":"2017","journal-title":"JINST"},{"key":"b8f14e45fceea167a5a36dedd4bea2543","doi-asserted-by":"publisher","first-page":"22","DOI":"10.1016\/j.nima.2018.07.020","article-title":"Study of the loss of Xenon Scintillation in Xenon-Trimethylamine Mixtures","volume":"905","author":"Trindade","year":"2018","journal-title":"Nucl. 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