Difference in the Nonlinearity of Absorption in Natural and Synthetic Coals
It is established that on an increase in the super high frequency (SHF) radiation power for powder anthracite, a more rapid increase in the amplitude of the EPR line is observed in comparison to the case of linear absorption, whereas for carbon obtained by deposition of the products of pyrolysis of...
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| Veröffentlicht in: | Journal of applied spectroscopy 2004-07, Vol.71 (4), p.597-599 |
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| container_title | Journal of applied spectroscopy |
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| creator | Mikhnov, S. A. Ugolev, I. I. |
| description | It is established that on an increase in the super high frequency (SHF) radiation power for powder anthracite, a more rapid increase in the amplitude of the EPR line is observed in comparison to the case of linear absorption, whereas for carbon obtained by deposition of the products of pyrolysis of deuterobenzene (C{sub 6}D{sub 6}) on the surface of {gamma}-Al{sub 2}O{sub 3} there occurs saturation of absorption. At an air pressure of about 10{sup -3} mm Hg, saturation of resonance absorption is observed in both samples. The linear effects observed can be understood within the framework of the formalism of a three-level scheme possible in the case of the triplet ground state of the paramagnetic centers of powder anthracite. |
| doi_str_mv | 10.1023/B:JAPS.0000046305.07030.5b |
| format | Article |
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The linear effects observed can be understood within the framework of the formalism of a three-level scheme possible in the case of the triplet ground state of the paramagnetic centers of powder anthracite.</description><identifier>ISSN: 0021-9037</identifier><identifier>EISSN: 1573-8647</identifier><identifier>DOI: 10.1023/B:JAPS.0000046305.07030.5b</identifier><language>eng</language><publisher>United States</publisher><subject>01 COAL, LIGNITE, AND PEAT ; ABSORPTION ; ALUMINIUM OXIDES ; ANTHRACITE ; BENZENE ; CARBON ; COAL ; ELECTRON SPIN RESONANCE ; LINE BROADENING ; LINE WIDTHS ; PARAMAGNETISM ; POWDERS ; SPECTRA</subject><ispartof>Journal of applied spectroscopy, 2004-07, Vol.71 (4), p.597-599</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,778,782,883,27911,27912</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/20567909$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Mikhnov, S. A.</creatorcontrib><creatorcontrib>Ugolev, I. I.</creatorcontrib><title>Difference in the Nonlinearity of Absorption in Natural and Synthetic Coals</title><title>Journal of applied spectroscopy</title><description>It is established that on an increase in the super high frequency (SHF) radiation power for powder anthracite, a more rapid increase in the amplitude of the EPR line is observed in comparison to the case of linear absorption, whereas for carbon obtained by deposition of the products of pyrolysis of deuterobenzene (C{sub 6}D{sub 6}) on the surface of {gamma}-Al{sub 2}O{sub 3} there occurs saturation of absorption. At an air pressure of about 10{sup -3} mm Hg, saturation of resonance absorption is observed in both samples. The linear effects observed can be understood within the framework of the formalism of a three-level scheme possible in the case of the triplet ground state of the paramagnetic centers of powder anthracite.</description><subject>01 COAL, LIGNITE, AND PEAT</subject><subject>ABSORPTION</subject><subject>ALUMINIUM OXIDES</subject><subject>ANTHRACITE</subject><subject>BENZENE</subject><subject>CARBON</subject><subject>COAL</subject><subject>ELECTRON SPIN RESONANCE</subject><subject>LINE BROADENING</subject><subject>LINE WIDTHS</subject><subject>PARAMAGNETISM</subject><subject>POWDERS</subject><subject>SPECTRA</subject><issn>0021-9037</issn><issn>1573-8647</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNpFkMtOwzAURC0EEqXwDxasE67j-JHu2vKmKkiFteU4tmpUbBSbRf-ehCIxm9mcmcVB6JJASaCi14vZ0_x1U8KYmlNgJQigULL2CE0IE7SQvBbHaAJQkaIBKk7RWUofA97ICibo-cY7Z3sbjMU-4Ly1eB3Dzgere5_3ODo8b1Psv7KPYSTWOn_3eod16PBmH4ZB9gYvo96lc3TihrIXfz1F73e3b8uHYvVy_7icrwpDapELwUFTVxFWyY5wAsJ20tmOM8kdacAwao1pmWkp1LolhkomXQO1MK20vCJ0iq4OvzFlr5Lx2ZqtiSFYk1UFjIsGmoGaHSjTx5R669RX7z91v1cE1ChPLdQoT_3LU7_yFGvpD87AYtw</recordid><startdate>200407</startdate><enddate>200407</enddate><creator>Mikhnov, S. 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I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c147t-760a3f21528d16107ed8fed6586f190c53eccb5cb304ab1c3858f9047cb8e6213</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>01 COAL, LIGNITE, AND PEAT</topic><topic>ABSORPTION</topic><topic>ALUMINIUM OXIDES</topic><topic>ANTHRACITE</topic><topic>BENZENE</topic><topic>CARBON</topic><topic>COAL</topic><topic>ELECTRON SPIN RESONANCE</topic><topic>LINE BROADENING</topic><topic>LINE WIDTHS</topic><topic>PARAMAGNETISM</topic><topic>POWDERS</topic><topic>SPECTRA</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mikhnov, S. A.</creatorcontrib><creatorcontrib>Ugolev, I. 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I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Difference in the Nonlinearity of Absorption in Natural and Synthetic Coals</atitle><jtitle>Journal of applied spectroscopy</jtitle><date>2004-07</date><risdate>2004</risdate><volume>71</volume><issue>4</issue><spage>597</spage><epage>599</epage><pages>597-599</pages><issn>0021-9037</issn><eissn>1573-8647</eissn><abstract>It is established that on an increase in the super high frequency (SHF) radiation power for powder anthracite, a more rapid increase in the amplitude of the EPR line is observed in comparison to the case of linear absorption, whereas for carbon obtained by deposition of the products of pyrolysis of deuterobenzene (C{sub 6}D{sub 6}) on the surface of {gamma}-Al{sub 2}O{sub 3} there occurs saturation of absorption. At an air pressure of about 10{sup -3} mm Hg, saturation of resonance absorption is observed in both samples. The linear effects observed can be understood within the framework of the formalism of a three-level scheme possible in the case of the triplet ground state of the paramagnetic centers of powder anthracite.</abstract><cop>United States</cop><doi>10.1023/B:JAPS.0000046305.07030.5b</doi><tpages>3</tpages></addata></record> |
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| ispartof | Journal of applied spectroscopy, 2004-07, Vol.71 (4), p.597-599 |
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| source | Springer Nature - Complete Springer Journals |
| subjects | 01 COAL, LIGNITE, AND PEAT ABSORPTION ALUMINIUM OXIDES ANTHRACITE BENZENE CARBON COAL ELECTRON SPIN RESONANCE LINE BROADENING LINE WIDTHS PARAMAGNETISM POWDERS SPECTRA |
| title | Difference in the Nonlinearity of Absorption in Natural and Synthetic Coals |
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