{"id":8270,"date":"2024-09-15T19:31:27","date_gmt":"2024-09-15T16:31:27","guid":{"rendered":"https:\/\/quantum-electronics.ru\/en\/?p=8270"},"modified":"2024-09-16T13:47:52","modified_gmt":"2024-09-16T10:47:52","slug":"ignition-of-brown-coal-microparticles-by-the-pulses-of-the-second-harmonic-of-nanosecond-neodymium-laser","status":"publish","type":"post","link":"https:\/\/quantum-electronics.ru\/en\/ignition-of-brown-coal-microparticles-by-the-pulses-of-the-second-harmonic-of-nanosecond-neodymium-laser\/","title":{"rendered":"Ignition of brown coal microparticles by the pulses of the second harmonic of nanosecond neodymium laser"},"content":{"rendered":"<p>B. P. Aduev, D. R. Nurmuhametov, I. Yu. Liskov, Z. R. Ismagilov<\/p>\n<div class=\"around-button\"><b>Abstract:<\/b> Under the action of pulses of neodymium laser second harmonic (532 nm, 10 ns) on microparticles of brown coal in the form of the tablets with 1 g\/cm<sup>3<\/sup> density (particle size being less than 63 \u03bcm), two stages different in kinetic characteristics and threshold energy densities were distinguished.At the first stage, when the energy density reaches 0.4 J\/cm<sup>2<\/sup>, there occurs an optical breakdown and a plasma torch is formed immediately after the laser pulse with a lifetime of \u223c1 \u03bcs. When the energy density reaches 4 J\/cm<sup>2<\/sup>, in addition to the processes of the first stage thermochemical reactions are initiated in the volume of coal microparticles, and volatile substances and non-volatile residue are released and ignited in the time interval of 30\u2013500 \u03bcs.<\/div>\n<div class=\"around-button\"><b>Keywords:<\/b> <i>laser ignition, optical breakdown, brown coal, emission spectra, emission kinetics, carbon plasma.<\/i><\/div>\n<div><b>Received:<\/b> 23.11.2022<br \/>\n<b>Revised:<\/b> 10.02.2023<\/div>\n","protected":false},"excerpt":{"rendered":"<p>B. P. Aduev, D. R. Nurmuhametov, I. Yu. Liskov, Z. R. Ismagilov Abstract: Under the action of pulses of neodymium laser second harmonic (532 nm, 10 ns) on microparticles of brown coal in the form of the tablets with 1 g\/cm3 density (particle size being less than 63 \u03bcm), two stages different in kinetic characteristics\u2026 <span class=\"read-more\"><a href=\"https:\/\/quantum-electronics.ru\/en\/ignition-of-brown-coal-microparticles-by-the-pulses-of-the-second-harmonic-of-nanosecond-neodymium-laser\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8270","post","type-post","status-publish","format-standard","hentry","category-stats"],"_links":{"self":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts\/8270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/comments?post=8270"}],"version-history":[{"count":0,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts\/8270\/revisions"}],"wp:attachment":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/media?parent=8270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/categories?post=8270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/tags?post=8270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}