Emission features and expansion dynamics of nanosecond laser ablation plumes at different ambient pressures
The influence of ambient pressure on the spectral emission features and expansion dynamics of a plasma plume generated on a metal target has been investigated. The plasma plumes were generated by irradiating Cu targets using 6 ns, 1064 nm pulses from a Q-switched Nd:YAG laser. The emission and expan...
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| Veröffentlicht in: | Journal of applied physics 2014-01, Vol.115 (3), p.33107 |
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| creator | Farid, N. Harilal, S. S. Ding, H. Hassanein, A. |
| description | The influence of ambient pressure on the spectral emission features and expansion dynamics of a plasma plume generated on a metal target has been investigated. The plasma plumes were generated by irradiating Cu targets using 6 ns, 1064 nm pulses from a Q-switched Nd:YAG laser. The emission and expansion dynamics of the plasma plumes were studied by varying air ambient pressure levels ranging from vacuum to atmospheric pressure. The ambient pressure levels were found to affect both the line intensities and broadening along with the signal to background and signal to noise ratios and the optimum pressure conditions for analytical applications were evaluated. The characteristic plume parameters were estimated using emission spectroscopy means and noticed that the excitation temperature peaked ∼300 Torr, while the electron density showed a maximum ∼100 Torr. Fast-gated images showed a complex interaction between the plume and background air leading to changes in the plume geometry with pressure as well as time. Surface morphology of irradiated surface showed that the pressure of the ambient gas affects the laser-target coupling significantly. |
| doi_str_mv | 10.1063/1.4862167 |
| format | Article |
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S. ; Ding, H. ; Hassanein, A.</creator><creatorcontrib>Farid, N. ; Harilal, S. S. ; Ding, H. ; Hassanein, A.</creatorcontrib><description>The influence of ambient pressure on the spectral emission features and expansion dynamics of a plasma plume generated on a metal target has been investigated. The plasma plumes were generated by irradiating Cu targets using 6 ns, 1064 nm pulses from a Q-switched Nd:YAG laser. The emission and expansion dynamics of the plasma plumes were studied by varying air ambient pressure levels ranging from vacuum to atmospheric pressure. The ambient pressure levels were found to affect both the line intensities and broadening along with the signal to background and signal to noise ratios and the optimum pressure conditions for analytical applications were evaluated. The characteristic plume parameters were estimated using emission spectroscopy means and noticed that the excitation temperature peaked ∼300 Torr, while the electron density showed a maximum ∼100 Torr. Fast-gated images showed a complex interaction between the plume and background air leading to changes in the plume geometry with pressure as well as time. Surface morphology of irradiated surface showed that the pressure of the ambient gas affects the laser-target coupling significantly.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.4862167</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; ABLATION ; AIR ; Applied physics ; Background noise ; COPPER ; ELECTRON DENSITY ; Emission analysis ; EMISSION SPECTROSCOPY ; EXCITATION ; Laser ablation ; LASER TARGETS ; LASER-PRODUCED PLASMA ; Lasers ; Morphology ; NEODYMIUM LASERS ; Parameter estimation ; PHOTON EMISSION ; PLASMA EXPANSION ; PLASMA PRESSURE ; PLUMES ; Pressure ; PULSED IRRADIATION ; Q-SWITCHING ; Semiconductor lasers ; SIGNAL-TO-NOISE RATIO ; Spectral emission ; YAG lasers</subject><ispartof>Journal of applied physics, 2014-01, Vol.115 (3), p.33107</ispartof><rights>2014 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c351t-7157d2a347162846da330df50ea2f326858b24ac6456cc8c605a43ba9c20707f3</citedby><cites>FETCH-LOGICAL-c351t-7157d2a347162846da330df50ea2f326858b24ac6456cc8c605a43ba9c20707f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,315,781,785,886,27926,27927</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22275696$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Farid, N.</creatorcontrib><creatorcontrib>Harilal, S. S.</creatorcontrib><creatorcontrib>Ding, H.</creatorcontrib><creatorcontrib>Hassanein, A.</creatorcontrib><title>Emission features and expansion dynamics of nanosecond laser ablation plumes at different ambient pressures</title><title>Journal of applied physics</title><description>The influence of ambient pressure on the spectral emission features and expansion dynamics of a plasma plume generated on a metal target has been investigated. The plasma plumes were generated by irradiating Cu targets using 6 ns, 1064 nm pulses from a Q-switched Nd:YAG laser. The emission and expansion dynamics of the plasma plumes were studied by varying air ambient pressure levels ranging from vacuum to atmospheric pressure. The ambient pressure levels were found to affect both the line intensities and broadening along with the signal to background and signal to noise ratios and the optimum pressure conditions for analytical applications were evaluated. The characteristic plume parameters were estimated using emission spectroscopy means and noticed that the excitation temperature peaked ∼300 Torr, while the electron density showed a maximum ∼100 Torr. Fast-gated images showed a complex interaction between the plume and background air leading to changes in the plume geometry with pressure as well as time. Surface morphology of irradiated surface showed that the pressure of the ambient gas affects the laser-target coupling significantly.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>ABLATION</subject><subject>AIR</subject><subject>Applied physics</subject><subject>Background noise</subject><subject>COPPER</subject><subject>ELECTRON DENSITY</subject><subject>Emission analysis</subject><subject>EMISSION SPECTROSCOPY</subject><subject>EXCITATION</subject><subject>Laser ablation</subject><subject>LASER TARGETS</subject><subject>LASER-PRODUCED PLASMA</subject><subject>Lasers</subject><subject>Morphology</subject><subject>NEODYMIUM LASERS</subject><subject>Parameter estimation</subject><subject>PHOTON EMISSION</subject><subject>PLASMA EXPANSION</subject><subject>PLASMA PRESSURE</subject><subject>PLUMES</subject><subject>Pressure</subject><subject>PULSED IRRADIATION</subject><subject>Q-SWITCHING</subject><subject>Semiconductor lasers</subject><subject>SIGNAL-TO-NOISE RATIO</subject><subject>Spectral emission</subject><subject>YAG lasers</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNpFkEtLxDAUhYMoOI4u_AcFVy465tE8upRhfMCAG12H2zTBjNO0Jik4_97WGXB14PLdj8NB6JbgFcGCPZBVpQQlQp6hBcGqLiXn-BwtMKakVLWsL9FVSjuMCVGsXqCvTedT8n0onIU8RpsKCG1hfwYIf-f2EKDzJhW9KwKEPlnTT8Aeko0FNHvIMzXsx25-zUXrnbPRhlxA1_g5h0maZvM1unCwT_bmlEv08bR5X7-U27fn1_XjtjSMk1xKwmVLgVWSCKoq0QJjuHUcW6COUaG4amgFRlRcGKOMwBwq1kBtKJZYOrZEd0dvn7LXyfhszefUOliTNaVUclGLf2qI_fdoU9a7foxhKqYpoXKCpKom6v5ImdinFK3TQ_QdxIMmWM-La6JPi7Nf1qJy4w</recordid><startdate>20140121</startdate><enddate>20140121</enddate><creator>Farid, N.</creator><creator>Harilal, S. S.</creator><creator>Ding, H.</creator><creator>Hassanein, A.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20140121</creationdate><title>Emission features and expansion dynamics of nanosecond laser ablation plumes at different ambient pressures</title><author>Farid, N. ; Harilal, S. S. ; Ding, H. ; Hassanein, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c351t-7157d2a347162846da330df50ea2f326858b24ac6456cc8c605a43ba9c20707f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>ABLATION</topic><topic>AIR</topic><topic>Applied physics</topic><topic>Background noise</topic><topic>COPPER</topic><topic>ELECTRON DENSITY</topic><topic>Emission analysis</topic><topic>EMISSION SPECTROSCOPY</topic><topic>EXCITATION</topic><topic>Laser ablation</topic><topic>LASER TARGETS</topic><topic>LASER-PRODUCED PLASMA</topic><topic>Lasers</topic><topic>Morphology</topic><topic>NEODYMIUM LASERS</topic><topic>Parameter estimation</topic><topic>PHOTON EMISSION</topic><topic>PLASMA EXPANSION</topic><topic>PLASMA PRESSURE</topic><topic>PLUMES</topic><topic>Pressure</topic><topic>PULSED IRRADIATION</topic><topic>Q-SWITCHING</topic><topic>Semiconductor lasers</topic><topic>SIGNAL-TO-NOISE RATIO</topic><topic>Spectral emission</topic><topic>YAG lasers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Farid, N.</creatorcontrib><creatorcontrib>Harilal, S. S.</creatorcontrib><creatorcontrib>Ding, H.</creatorcontrib><creatorcontrib>Hassanein, A.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Farid, N.</au><au>Harilal, S. S.</au><au>Ding, H.</au><au>Hassanein, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Emission features and expansion dynamics of nanosecond laser ablation plumes at different ambient pressures</atitle><jtitle>Journal of applied physics</jtitle><date>2014-01-21</date><risdate>2014</risdate><volume>115</volume><issue>3</issue><spage>33107</spage><pages>33107-</pages><issn>0021-8979</issn><eissn>1089-7550</eissn><abstract>The influence of ambient pressure on the spectral emission features and expansion dynamics of a plasma plume generated on a metal target has been investigated. The plasma plumes were generated by irradiating Cu targets using 6 ns, 1064 nm pulses from a Q-switched Nd:YAG laser. The emission and expansion dynamics of the plasma plumes were studied by varying air ambient pressure levels ranging from vacuum to atmospheric pressure. The ambient pressure levels were found to affect both the line intensities and broadening along with the signal to background and signal to noise ratios and the optimum pressure conditions for analytical applications were evaluated. The characteristic plume parameters were estimated using emission spectroscopy means and noticed that the excitation temperature peaked ∼300 Torr, while the electron density showed a maximum ∼100 Torr. Fast-gated images showed a complex interaction between the plume and background air leading to changes in the plume geometry with pressure as well as time. Surface morphology of irradiated surface showed that the pressure of the ambient gas affects the laser-target coupling significantly.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4862167</doi></addata></record> |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY ABLATION AIR Applied physics Background noise COPPER ELECTRON DENSITY Emission analysis EMISSION SPECTROSCOPY EXCITATION Laser ablation LASER TARGETS LASER-PRODUCED PLASMA Lasers Morphology NEODYMIUM LASERS Parameter estimation PHOTON EMISSION PLASMA EXPANSION PLASMA PRESSURE PLUMES Pressure PULSED IRRADIATION Q-SWITCHING Semiconductor lasers SIGNAL-TO-NOISE RATIO Spectral emission YAG lasers |
| title | Emission features and expansion dynamics of nanosecond laser ablation plumes at different ambient pressures |
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