{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T06:16:53Z","timestamp":1777443413339,"version":"3.51.4"},"reference-count":20,"publisher":"SAGE Publications","issue":"9","license":[{"start":{"date-parts":[[2017,4,27]],"date-time":"2017-04-27T00:00:00Z","timestamp":1493251200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"European Research Council","award":["Advanced Grant (TUCLA)"],"award-info":[{"award-number":["Advanced Grant (TUCLA)"]}]},{"DOI":"10.13039\/501100004527","name":"Swedish Energy Agency","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100004527","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Appl Spectrosc"],"published-print":{"date-parts":[[2017,9]]},"abstract":"<jats:p>\n                    A concept based on photofragmentation laser-induced fluorescence (PFLIF) is for the first time demonstrated for simultaneous detection of hydrogen peroxide (H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    ) and water (H\n                    <jats:sub>2<\/jats:sub>\n                    O) vapor in various mixtures containing the two constituents in a bath of argon gas. A photolysis laser pulse at 248\u2009nm dissociates H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    into OH fragments, whereupon a probe pulse, delayed 100\u2009ns and tuned to an absorption line in the A\n                    <jats:sup>2<\/jats:sup>\n                    \u03a3\n                    <jats:sup>+<\/jats:sup>\n                    (v\u2009=\u20091) \u2190 X\n                    <jats:sup>2<\/jats:sup>\n                    \u03a0(v\u2009=\u20090) band of OH near 282\u2009nm, induces fluorescence. The total OH fluorescence reflects the H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    concentration, while its spectral shape is utilized to determine the H\n                    <jats:sub>2<\/jats:sub>\n                    O concentration via a model predicting the ratio between the fluorescence intensities of the A\n                    <jats:sup>2<\/jats:sup>\n                    \u03a3\n                    <jats:sup>+<\/jats:sup>\n                    (v\u2009=\u20091) \u2192 X\n                    <jats:sup>2<\/jats:sup>\n                    \u03a0(v\u2009=\u20091) and the A\n                    <jats:sup>2<\/jats:sup>\n                    \u03a3\n                    <jats:sup>+<\/jats:sup>\n                    (v\u2009=\u20090) \u2192 X\n                    <jats:sup>2<\/jats:sup>\n                    \u03a0(v\u2009=\u20090) bands. The H\n                    <jats:sub>2<\/jats:sub>\n                    O detection scheme requires that the bath gas has a collisional cross-section with OH(A) that is significantly lower than that of H\n                    <jats:sub>2<\/jats:sub>\n                    O, which is the case for argon. Spectrally dispersed OH fluorescence spectra were recorded for five different H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    \/H\n                    <jats:sub>2<\/jats:sub>\n                    O\/Ar mixtures; the H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    concentration in the range of 30\u2013500\u2009ppm and the H\n                    <jats:sub>2<\/jats:sub>\n                    O concentration in the range of 0\u20133%. Fluorescence intensity ratios predicted by the model for these mixtures agree very well with corresponding experimental data, which thus validates the model. The concept was also demonstrated for two-dimensional imaging, using two intensified charge-coupled device (CCD) cameras for signal detection. Water content was here sensed through the different temporal characteristics of the two fluorescence bands by triggering the two cameras so that one captures the total OH fluorescence while the other one captures only the early part, which mainly stems from A\n                    <jats:sup>2<\/jats:sup>\n                    \u03a3\n                    <jats:sup>+<\/jats:sup>\n                    (v\u2009=\u20091) \u2192 X\n                    <jats:sup>2<\/jats:sup>\n                    \u03a0(v\u2009=\u20091) fluorescence. Hence, the H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    concentration is reflected by the image of the camera recording the total OH fluorescence, whereas H\n                    <jats:sub>2<\/jats:sub>\n                    O concentration is extracted from the ratio between the two camera images. Quantification of the concentrations was carried out based on calibration measurements performed in known mixtures of H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    (30\u2013500\u2009ppm) and H\n                    <jats:sub>2<\/jats:sub>\n                    O (0\u20133%) in bulk argon. The detection limits for single-shot imaging are estimated to be 20\u2009ppm for H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    and 0.05% for H\n                    <jats:sub>2<\/jats:sub>\n                    O. The authors believe that the concept provides a valuable asset in, for example, pharmaceutical or aseptic food packaging applications, where H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    \/H\n                    <jats:sub>2<\/jats:sub>\n                    O vapor is routinely used for sterilization.\n                  <\/jats:p>","DOI":"10.1177\/0003702817702386","type":"journal-article","created":{"date-parts":[[2017,4,27]],"date-time":"2017-04-27T06:11:29Z","timestamp":1493273489000},"page":"2118-2127","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["Simultaneous Visualization of Hydrogen Peroxide and Water Concentrations Using Photofragmentation Laser-Induced Fluorescence"],"prefix":"10.1177","volume":"71","author":[{"given":"Kajsa","family":"Larsson","sequence":"first","affiliation":[{"name":"Division of Combustion Physics, Lund University, Lund, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcus","family":"Ald\u00e9n","sequence":"additional","affiliation":[{"name":"Division of Combustion Physics, Lund University, Lund, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joakim","family":"Bood","sequence":"additional","affiliation":[{"name":"Division of Combustion Physics, Lund University, Lund, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2017,4,27]]},"reference":[{"key":"bibr2-0003702817702386","doi-asserted-by":"publisher","DOI":"10.1007\/s12247-009-9057-3"},{"key":"bibr3-0003702817702386","doi-asserted-by":"publisher","DOI":"10.1023\/A:1012085702372"},{"issue":"3","key":"bibr4-0003702817702386","first-page":"1","volume":"18","author":"Adams D.","year":"1998","journal-title":"Pharm. 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