THE 217.5 nm BAND, INFRARED ABSORPTION, AND INFRARED EMISSION FEATURES IN HYDROGENATED AMORPHOUS CARBON NANOPARTICLES
We report on the preparation of hydrogenated amorphous carbon nanoparticles whose spectral characteristics include an absorption band at 217.5 nm with the profile and characteristics of the interstellar 217.5 nm feature. Vibrational spectra of these particles also contain the features commonly obser...
Gespeichert in:
Veröffentlicht in: | The Astrophysical journal 2012-12, Vol.761 (2), p.1-16 |
---|---|
Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | 16 |
---|---|
container_issue | 2 |
container_start_page | 1 |
container_title | The Astrophysical journal |
container_volume | 761 |
creator | DULEY, W. W ANMING HU |
description | We report on the preparation of hydrogenated amorphous carbon nanoparticles whose spectral characteristics include an absorption band at 217.5 nm with the profile and characteristics of the interstellar 217.5 nm feature. Vibrational spectra of these particles also contain the features commonly observed in absorption and emission from dust in the diffuse interstellar medium. These materials are produced under "slow" deposition conditions by minimizing the flux of incident carbon atoms and by reducing surface mobility. The initial chemistry leads to the formation of carbon chains, together with a limited range of small aromatic ring molecules, and eventually results in carbon nanoparticles having an sp super(2)/sp super(3) ratio approximately 0.4. Spectroscopic analysis of particle composition indicates that naphthalene and naphthalene derivatives are important constituents of this material. We suggest that carbon nanoparticles with similar composition are responsible for the appearance of the interstellar 217.5 nm band and outline how these particles can form in situ under diffuse cloud conditions by deposition of carbon on the surface of silicate grains. Spectral data from carbon nanoparticles formed under these conditions accurately reproduce IR emission spectra from a number of Galactic sources. We provide the first detailed fits to observational spectra of Type A and B emission sources based entirely on measured spectra of a carbonaceous material that can be produced in the laboratory. |
doi_str_mv | 10.1088/0004-637X/761/2/115 |
format | Article |
fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_22143623</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1730107613</sourcerecordid><originalsourceid>FETCH-LOGICAL-c418t-840d4d7bd8fbc7db9d6f2f1033c4a5c740111efdcc0f9e8f86d119faebfe39c03</originalsourceid><addsrcrecordid>eNqNkU9r4zAQxcXSwqZ_PsFeBEuhh7rRSLZlH5XEaQypXWwHdk_CkSXWS2J3Leew374yKe21p2Hm_d4MzEPoB5BHIFE0J4T4Xsj4rzkPYU7nAME3NIOARZ7PAn6BZh_Ed3Rl7d-ppXE8Q6dqk2AK_DHA3REvRLZ6wGm2LkSRrLBYlHnxUqV59oCd8ikkz2lZujFeJ6LaFUnpJLz5vSrypyQT1WR9ds5NvivxUhQLR2Yiy19EUaXLbVLeoEtTH6y-fa_XaLdOquXG2-ZP6VJsPeVDNHqRTxq_4fsmMnvFm33chIYaIIwpvw4U9wkAaNMoRUysIxOFDUBsar03msWKsGv087y3t2MrrWpHrf6ovuu0GiWl4LOQMkfdn6nXof930naUx9YqfTjUne5PVgJnBIj77FdQoEEYEqAOZWdUDb21gzbydWiP9fBfApFTanIKQU6ZSLdbUulSc6679wO1VfXBDHWnWvthpSEPKKWcvQGcPIzG</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1712566012</pqid></control><display><type>article</type><title>THE 217.5 nm BAND, INFRARED ABSORPTION, AND INFRARED EMISSION FEATURES IN HYDROGENATED AMORPHOUS CARBON NANOPARTICLES</title><source>Institute of Physics Open Access Journal Titles</source><source>EZB-FREE-00999 freely available EZB journals</source><source>Alma/SFX Local Collection</source><creator>DULEY, W. W ; ANMING HU</creator><creatorcontrib>DULEY, W. W ; ANMING HU</creatorcontrib><description>We report on the preparation of hydrogenated amorphous carbon nanoparticles whose spectral characteristics include an absorption band at 217.5 nm with the profile and characteristics of the interstellar 217.5 nm feature. Vibrational spectra of these particles also contain the features commonly observed in absorption and emission from dust in the diffuse interstellar medium. These materials are produced under "slow" deposition conditions by minimizing the flux of incident carbon atoms and by reducing surface mobility. The initial chemistry leads to the formation of carbon chains, together with a limited range of small aromatic ring molecules, and eventually results in carbon nanoparticles having an sp super(2)/sp super(3) ratio approximately 0.4. Spectroscopic analysis of particle composition indicates that naphthalene and naphthalene derivatives are important constituents of this material. We suggest that carbon nanoparticles with similar composition are responsible for the appearance of the interstellar 217.5 nm band and outline how these particles can form in situ under diffuse cloud conditions by deposition of carbon on the surface of silicate grains. Spectral data from carbon nanoparticles formed under these conditions accurately reproduce IR emission spectra from a number of Galactic sources. We provide the first detailed fits to observational spectra of Type A and B emission sources based entirely on measured spectra of a carbonaceous material that can be produced in the laboratory.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.1088/0004-637X/761/2/115</identifier><identifier>CODEN: ASJOAB</identifier><language>eng</language><publisher>Bristol: IOP</publisher><subject>ABSORPTION SPECTROSCOPY ; AMORPHOUS STATE ; Astronomy ; ASTROPHYSICS ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; CARBON ; CARBONACEOUS MATERIALS ; CHEMISTRY ; COSMIC DUST ; Deposition ; Diffusion ; Earth, ocean, space ; Emission ; EMISSION SPECTRA ; EMISSION SPECTROSCOPY ; Exact sciences and technology ; INFRARED SPECTRA ; INTERSTELLAR GRAINS ; INTERSTELLAR SPACE ; MILKY WAY ; MOBILITY ; Nanoparticles ; NANOSCIENCE AND NANOTECHNOLOGY ; NANOSTRUCTURES ; NAPHTHALENE ; PARTICLES ; Pollution sources ; SILICATES ; Spectral emissivity</subject><ispartof>The Astrophysical journal, 2012-12, Vol.761 (2), p.1-16</ispartof><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c418t-840d4d7bd8fbc7db9d6f2f1033c4a5c740111efdcc0f9e8f86d119faebfe39c03</citedby><cites>FETCH-LOGICAL-c418t-840d4d7bd8fbc7db9d6f2f1033c4a5c740111efdcc0f9e8f86d119faebfe39c03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26752227$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/22143623$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>DULEY, W. W</creatorcontrib><creatorcontrib>ANMING HU</creatorcontrib><title>THE 217.5 nm BAND, INFRARED ABSORPTION, AND INFRARED EMISSION FEATURES IN HYDROGENATED AMORPHOUS CARBON NANOPARTICLES</title><title>The Astrophysical journal</title><description>We report on the preparation of hydrogenated amorphous carbon nanoparticles whose spectral characteristics include an absorption band at 217.5 nm with the profile and characteristics of the interstellar 217.5 nm feature. Vibrational spectra of these particles also contain the features commonly observed in absorption and emission from dust in the diffuse interstellar medium. These materials are produced under "slow" deposition conditions by minimizing the flux of incident carbon atoms and by reducing surface mobility. The initial chemistry leads to the formation of carbon chains, together with a limited range of small aromatic ring molecules, and eventually results in carbon nanoparticles having an sp super(2)/sp super(3) ratio approximately 0.4. Spectroscopic analysis of particle composition indicates that naphthalene and naphthalene derivatives are important constituents of this material. We suggest that carbon nanoparticles with similar composition are responsible for the appearance of the interstellar 217.5 nm band and outline how these particles can form in situ under diffuse cloud conditions by deposition of carbon on the surface of silicate grains. Spectral data from carbon nanoparticles formed under these conditions accurately reproduce IR emission spectra from a number of Galactic sources. We provide the first detailed fits to observational spectra of Type A and B emission sources based entirely on measured spectra of a carbonaceous material that can be produced in the laboratory.</description><subject>ABSORPTION SPECTROSCOPY</subject><subject>AMORPHOUS STATE</subject><subject>Astronomy</subject><subject>ASTROPHYSICS</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>CARBON</subject><subject>CARBONACEOUS MATERIALS</subject><subject>CHEMISTRY</subject><subject>COSMIC DUST</subject><subject>Deposition</subject><subject>Diffusion</subject><subject>Earth, ocean, space</subject><subject>Emission</subject><subject>EMISSION SPECTRA</subject><subject>EMISSION SPECTROSCOPY</subject><subject>Exact sciences and technology</subject><subject>INFRARED SPECTRA</subject><subject>INTERSTELLAR GRAINS</subject><subject>INTERSTELLAR SPACE</subject><subject>MILKY WAY</subject><subject>MOBILITY</subject><subject>Nanoparticles</subject><subject>NANOSCIENCE AND NANOTECHNOLOGY</subject><subject>NANOSTRUCTURES</subject><subject>NAPHTHALENE</subject><subject>PARTICLES</subject><subject>Pollution sources</subject><subject>SILICATES</subject><subject>Spectral emissivity</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqNkU9r4zAQxcXSwqZ_PsFeBEuhh7rRSLZlH5XEaQypXWwHdk_CkSXWS2J3Leew374yKe21p2Hm_d4MzEPoB5BHIFE0J4T4Xsj4rzkPYU7nAME3NIOARZ7PAn6BZh_Ed3Rl7d-ppXE8Q6dqk2AK_DHA3REvRLZ6wGm2LkSRrLBYlHnxUqV59oCd8ikkz2lZujFeJ6LaFUnpJLz5vSrypyQT1WR9ds5NvivxUhQLR2Yiy19EUaXLbVLeoEtTH6y-fa_XaLdOquXG2-ZP6VJsPeVDNHqRTxq_4fsmMnvFm33chIYaIIwpvw4U9wkAaNMoRUysIxOFDUBsar03msWKsGv087y3t2MrrWpHrf6ovuu0GiWl4LOQMkfdn6nXof930naUx9YqfTjUne5PVgJnBIj77FdQoEEYEqAOZWdUDb21gzbydWiP9fBfApFTanIKQU6ZSLdbUulSc6679wO1VfXBDHWnWvthpSEPKKWcvQGcPIzG</recordid><startdate>20121220</startdate><enddate>20121220</enddate><creator>DULEY, W. W</creator><creator>ANMING HU</creator><general>IOP</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20121220</creationdate><title>THE 217.5 nm BAND, INFRARED ABSORPTION, AND INFRARED EMISSION FEATURES IN HYDROGENATED AMORPHOUS CARBON NANOPARTICLES</title><author>DULEY, W. W ; ANMING HU</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c418t-840d4d7bd8fbc7db9d6f2f1033c4a5c740111efdcc0f9e8f86d119faebfe39c03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>ABSORPTION SPECTROSCOPY</topic><topic>AMORPHOUS STATE</topic><topic>Astronomy</topic><topic>ASTROPHYSICS</topic><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>CARBON</topic><topic>CARBONACEOUS MATERIALS</topic><topic>CHEMISTRY</topic><topic>COSMIC DUST</topic><topic>Deposition</topic><topic>Diffusion</topic><topic>Earth, ocean, space</topic><topic>Emission</topic><topic>EMISSION SPECTRA</topic><topic>EMISSION SPECTROSCOPY</topic><topic>Exact sciences and technology</topic><topic>INFRARED SPECTRA</topic><topic>INTERSTELLAR GRAINS</topic><topic>INTERSTELLAR SPACE</topic><topic>MILKY WAY</topic><topic>MOBILITY</topic><topic>Nanoparticles</topic><topic>NANOSCIENCE AND NANOTECHNOLOGY</topic><topic>NANOSTRUCTURES</topic><topic>NAPHTHALENE</topic><topic>PARTICLES</topic><topic>Pollution sources</topic><topic>SILICATES</topic><topic>Spectral emissivity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>DULEY, W. W</creatorcontrib><creatorcontrib>ANMING HU</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>DULEY, W. W</au><au>ANMING HU</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>THE 217.5 nm BAND, INFRARED ABSORPTION, AND INFRARED EMISSION FEATURES IN HYDROGENATED AMORPHOUS CARBON NANOPARTICLES</atitle><jtitle>The Astrophysical journal</jtitle><date>2012-12-20</date><risdate>2012</risdate><volume>761</volume><issue>2</issue><spage>1</spage><epage>16</epage><pages>1-16</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>We report on the preparation of hydrogenated amorphous carbon nanoparticles whose spectral characteristics include an absorption band at 217.5 nm with the profile and characteristics of the interstellar 217.5 nm feature. Vibrational spectra of these particles also contain the features commonly observed in absorption and emission from dust in the diffuse interstellar medium. These materials are produced under "slow" deposition conditions by minimizing the flux of incident carbon atoms and by reducing surface mobility. The initial chemistry leads to the formation of carbon chains, together with a limited range of small aromatic ring molecules, and eventually results in carbon nanoparticles having an sp super(2)/sp super(3) ratio approximately 0.4. Spectroscopic analysis of particle composition indicates that naphthalene and naphthalene derivatives are important constituents of this material. We suggest that carbon nanoparticles with similar composition are responsible for the appearance of the interstellar 217.5 nm band and outline how these particles can form in situ under diffuse cloud conditions by deposition of carbon on the surface of silicate grains. Spectral data from carbon nanoparticles formed under these conditions accurately reproduce IR emission spectra from a number of Galactic sources. We provide the first detailed fits to observational spectra of Type A and B emission sources based entirely on measured spectra of a carbonaceous material that can be produced in the laboratory.</abstract><cop>Bristol</cop><pub>IOP</pub><doi>10.1088/0004-637X/761/2/115</doi><tpages>16</tpages><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 0004-637X |
ispartof | The Astrophysical journal, 2012-12, Vol.761 (2), p.1-16 |
issn | 0004-637X 1538-4357 |
language | eng |
recordid | cdi_osti_scitechconnect_22143623 |
source | Institute of Physics Open Access Journal Titles; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
subjects | ABSORPTION SPECTROSCOPY AMORPHOUS STATE Astronomy ASTROPHYSICS ASTROPHYSICS, COSMOLOGY AND ASTRONOMY CARBON CARBONACEOUS MATERIALS CHEMISTRY COSMIC DUST Deposition Diffusion Earth, ocean, space Emission EMISSION SPECTRA EMISSION SPECTROSCOPY Exact sciences and technology INFRARED SPECTRA INTERSTELLAR GRAINS INTERSTELLAR SPACE MILKY WAY MOBILITY Nanoparticles NANOSCIENCE AND NANOTECHNOLOGY NANOSTRUCTURES NAPHTHALENE PARTICLES Pollution sources SILICATES Spectral emissivity |
title | THE 217.5 nm BAND, INFRARED ABSORPTION, AND INFRARED EMISSION FEATURES IN HYDROGENATED AMORPHOUS CARBON NANOPARTICLES |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-23T07%3A24%3A30IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=THE%20217.5%20nm%20BAND,%20INFRARED%20ABSORPTION,%20AND%20INFRARED%20EMISSION%20FEATURES%20IN%20HYDROGENATED%20AMORPHOUS%20CARBON%20NANOPARTICLES&rft.jtitle=The%20Astrophysical%20journal&rft.au=DULEY,%20W.%20W&rft.date=2012-12-20&rft.volume=761&rft.issue=2&rft.spage=1&rft.epage=16&rft.pages=1-16&rft.issn=0004-637X&rft.eissn=1538-4357&rft.coden=ASJOAB&rft_id=info:doi/10.1088/0004-637X/761/2/115&rft_dat=%3Cproquest_osti_%3E1730107613%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1712566012&rft_id=info:pmid/&rfr_iscdi=true |