{"id":32265,"date":"2023-02-01T16:52:21","date_gmt":"2023-02-01T15:52:21","guid":{"rendered":"https:\/\/karmaka.de\/?p=32265"},"modified":"2023-02-01T16:52:22","modified_gmt":"2023-02-01T15:52:22","slug":"laboratory-modeling-in-laser-induced-plasma-to-estimate-the-pressure-in-bolide-wake","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=32265","title":{"rendered":"Laboratory modeling in laser-induced plasma to estimate the pressure in bolide wake<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>A. Zakuskin, B.G. Beglaryan, T.A. Labutin<\/p>\n\n\n\n<p>A&amp;A, Forthcoming article<\/p>\n\n\n\n<p><a href=\"https:\/\/www.aanda.org\/articles\/aa\/pdf\/forth\/aa45462-22.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Aims. We study Fe and FeO emission in laser-induced plasma under reduced pressure to develop an approach for finding the conditions under which the laboratory plasma state matches the state of bolide wake plasma.<br>Methods. To acquire spectra of laser-induced plasma, we ablated a target of Fe3O4 in a vacuum chamber using a Q-switched laser. The Boltzmann plot method and Stark broadening of the emission lines were used to estimate the plasma temperature and electron number density. The intensity ratios of two Fe I lines (544.61 nm and 558.69 nm) to the intensity of FeO orange band at 587.1 nm were calculated to compare the conditions in laser-induced plasma and bolide wake plasma.<br>Results. Several combinations of pressure (75-150 Torr) and delay (12 &#8211; 15 \u03bcs) lead to the highest degree of similarity between laser-induced plasma and the Bene\u0161ov bolide spectra at an altitude of 39 km. Importantly, the plasma parameters and pressure are consistent at these points. A detailed comparison of the spectra shows that the best-match conditions are 100 Torr and 15 \u03bcs. This pressure is \u224825 times higher than the ambient pressure at this altitude.<br>Conclusions. We assume that the pressure in the bolide wake is higher than the ambient pressure by a factor of 20-30. This can be considered to be the upper bound estimate of the pressure in the bolide wake, and the developed approach would be beneficial to support the modeling of a meteoroid entry.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A. Zakuskin, B.G. Beglaryan, T.A. Labutin A&amp;A, Forthcoming article PDF (OPEN ACCESS) &#8220;Aims. We study Fe and FeO emission in laser-induced plasma under reduced pressure to develop an approach for finding the conditions under which&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96],"tags":[869,118,1657,1162,98,4326,3482,141,3683],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/32265"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=32265"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/32265\/revisions"}],"predecessor-version":[{"id":32266,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/32265\/revisions\/32266"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=32265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=32265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=32265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}