THE SPECTRUM AND TERM ANALYSIS OF CO iii MEASURED USING FOURIER TRANSFORM AND GRATING SPECTROSCOPY
ABSTRACT The spectrum of Co iii has been recorded in the region 1562-2564 (64,000 cm−1-39,000 cm−1) by Fourier transform (FT) spectroscopy, and in the region 1317-2500 (164,000 cm−1-40,000 cm−1) using a 10.7 m grating spectrograph with phosphor image plate detectors. The spectrum was excited in a co...
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| creator | Smillie, D. G. Pickering, J. C. Nave, G. Smith, P. L. |
| description | ABSTRACT The spectrum of Co iii has been recorded in the region 1562-2564 (64,000 cm−1-39,000 cm−1) by Fourier transform (FT) spectroscopy, and in the region 1317-2500 (164,000 cm−1-40,000 cm−1) using a 10.7 m grating spectrograph with phosphor image plate detectors. The spectrum was excited in a cobalt-neon Penning discharge lamp. We classified 514 Co iii lines measured using FT spectroscopy, the strongest having wavenumber uncertainties approaching 0.004 cm−1 (approximately 0.2 m at 2000 , or 1 part in 107), and 240 lines measured with grating spectroscopy with uncertainties between 5 and 10 m . The wavelength calibration of 790 lines of Raassen & Ortí Ortin and 87 lines from Shenstone has been revised and combined with our measurements to optimize the values of all but one of the 288 previously reported energy levels. Order of magnitude reductions in uncertainty for almost two-thirds of the 3d64s and almost half of the 3d64p revised energy levels are obtained. Ritz wavelengths have been calculated for an additional 100 forbidden lines. Eigenvector percentage compositions for the energy levels and predicted oscillator strengths have been calculated using the Cowan code. |
| doi_str_mv | 10.3847/0067-0049/223/1/12 |
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G. ; Pickering, J. C. ; Nave, G. ; Smith, P. L.</creator><creatorcontrib>Smillie, D. G. ; Pickering, J. C. ; Nave, G. ; Smith, P. L.</creatorcontrib><description>ABSTRACT The spectrum of Co iii has been recorded in the region 1562-2564 (64,000 cm−1-39,000 cm−1) by Fourier transform (FT) spectroscopy, and in the region 1317-2500 (164,000 cm−1-40,000 cm−1) using a 10.7 m grating spectrograph with phosphor image plate detectors. The spectrum was excited in a cobalt-neon Penning discharge lamp. We classified 514 Co iii lines measured using FT spectroscopy, the strongest having wavenumber uncertainties approaching 0.004 cm−1 (approximately 0.2 m at 2000 , or 1 part in 107), and 240 lines measured with grating spectroscopy with uncertainties between 5 and 10 m . The wavelength calibration of 790 lines of Raassen & Ortí Ortin and 87 lines from Shenstone has been revised and combined with our measurements to optimize the values of all but one of the 288 previously reported energy levels. Order of magnitude reductions in uncertainty for almost two-thirds of the 3d64s and almost half of the 3d64p revised energy levels are obtained. Ritz wavelengths have been calculated for an additional 100 forbidden lines. Eigenvector percentage compositions for the energy levels and predicted oscillator strengths have been calculated using the Cowan code.</description><identifier>ISSN: 0067-0049</identifier><identifier>EISSN: 1538-4365</identifier><identifier>DOI: 10.3847/0067-0049/223/1/12</identifier><language>eng</language><publisher>United States: The American Astronomical Society</publisher><subject>ATOMIC AND MOLECULAR PHYSICS ; atomic data ; CALIBRATION ; COBALT ; Diffraction gratings ; EIGENVECTORS ; EMISSION SPECTRA ; EMISSION SPECTROSCOPY ; ENERGY LEVELS ; FOURIER TRANSFORMATION ; Fourier transforms ; Gratings (spectra) ; line: identification ; line: profiles ; Mathematical analysis ; methods: laboratory: atomic ; NEON ; OSCILLATOR STRENGTHS ; PENNING DISCHARGES ; Spectroscopic analysis ; Uncertainty ; Wavelengths</subject><ispartof>The Astrophysical journal. Supplement series, 2016-03, Vol.223 (1), p.12-12</ispartof><rights>2016. The American Astronomical Society. 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G.</creatorcontrib><creatorcontrib>Pickering, J. C.</creatorcontrib><creatorcontrib>Nave, G.</creatorcontrib><creatorcontrib>Smith, P. L.</creatorcontrib><title>THE SPECTRUM AND TERM ANALYSIS OF CO iii MEASURED USING FOURIER TRANSFORM AND GRATING SPECTROSCOPY</title><title>The Astrophysical journal. Supplement series</title><addtitle>APJS</addtitle><addtitle>Astrophys. J. Suppl</addtitle><description>ABSTRACT The spectrum of Co iii has been recorded in the region 1562-2564 (64,000 cm−1-39,000 cm−1) by Fourier transform (FT) spectroscopy, and in the region 1317-2500 (164,000 cm−1-40,000 cm−1) using a 10.7 m grating spectrograph with phosphor image plate detectors. The spectrum was excited in a cobalt-neon Penning discharge lamp. We classified 514 Co iii lines measured using FT spectroscopy, the strongest having wavenumber uncertainties approaching 0.004 cm−1 (approximately 0.2 m at 2000 , or 1 part in 107), and 240 lines measured with grating spectroscopy with uncertainties between 5 and 10 m . The wavelength calibration of 790 lines of Raassen & Ortí Ortin and 87 lines from Shenstone has been revised and combined with our measurements to optimize the values of all but one of the 288 previously reported energy levels. Order of magnitude reductions in uncertainty for almost two-thirds of the 3d64s and almost half of the 3d64p revised energy levels are obtained. Ritz wavelengths have been calculated for an additional 100 forbidden lines. Eigenvector percentage compositions for the energy levels and predicted oscillator strengths have been calculated using the Cowan code.</description><subject>ATOMIC AND MOLECULAR PHYSICS</subject><subject>atomic data</subject><subject>CALIBRATION</subject><subject>COBALT</subject><subject>Diffraction gratings</subject><subject>EIGENVECTORS</subject><subject>EMISSION SPECTRA</subject><subject>EMISSION SPECTROSCOPY</subject><subject>ENERGY LEVELS</subject><subject>FOURIER TRANSFORMATION</subject><subject>Fourier transforms</subject><subject>Gratings (spectra)</subject><subject>line: identification</subject><subject>line: profiles</subject><subject>Mathematical analysis</subject><subject>methods: laboratory: atomic</subject><subject>NEON</subject><subject>OSCILLATOR STRENGTHS</subject><subject>PENNING DISCHARGES</subject><subject>Spectroscopic analysis</subject><subject>Uncertainty</subject><subject>Wavelengths</subject><issn>0067-0049</issn><issn>1538-4365</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqNkU1Lw0AQhhdRsFb_gKcFL17S7kc2u3sMMW0DbVPycehpSdcNprRJzaYH_70JEY8iDMzAPO_LMC8AzxjNqHD5HCGPOwi5ck4IneM5JjdgghkVjks9dgsmv8A9eLD2iBDijMoJOGSrEKa7MMiSfAP97RvMwmQY_PU-jVIYL2AQw6qq4Cb00zwJ32CeRtslXMR5EoUJzBJ_my7iZBQvEz8btqNjnAbxbv8I7sriZM3TT5-CfBFmwcpZx8so8NeOpgJ1jiEFLSlh1HU5LUvMBH73GBJEMuxh7FK3lJpQwQ_UmEJ4RY8b12NG8_JwKEo6BS-jb2O7SllddUZ_6Kauje4UIQxL6eGeeh2pS9t8Xo3t1Lmy2pxORW2aq1VYSNqXx8g_UCEk50jyHiUjqtvG2taU6tJW56L9UhipISE1BKCGAPpTqMIKD_6zUVQ1F3Vsrm3dv-cvwTcOA4dN</recordid><startdate>20160301</startdate><enddate>20160301</enddate><creator>Smillie, D. G.</creator><creator>Pickering, J. C.</creator><creator>Nave, G.</creator><creator>Smith, P. L.</creator><general>The American Astronomical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0003-2879-4140</orcidid></search><sort><creationdate>20160301</creationdate><title>THE SPECTRUM AND TERM ANALYSIS OF CO iii MEASURED USING FOURIER TRANSFORM AND GRATING SPECTROSCOPY</title><author>Smillie, D. G. ; Pickering, J. C. ; Nave, G. ; Smith, P. 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G.</creatorcontrib><creatorcontrib>Pickering, J. C.</creatorcontrib><creatorcontrib>Nave, G.</creatorcontrib><creatorcontrib>Smith, P. L.</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal. Supplement series</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Smillie, D. G.</au><au>Pickering, J. C.</au><au>Nave, G.</au><au>Smith, P. L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>THE SPECTRUM AND TERM ANALYSIS OF CO iii MEASURED USING FOURIER TRANSFORM AND GRATING SPECTROSCOPY</atitle><jtitle>The Astrophysical journal. Supplement series</jtitle><stitle>APJS</stitle><addtitle>Astrophys. J. Suppl</addtitle><date>2016-03-01</date><risdate>2016</risdate><volume>223</volume><issue>1</issue><spage>12</spage><epage>12</epage><pages>12-12</pages><issn>0067-0049</issn><eissn>1538-4365</eissn><abstract>ABSTRACT The spectrum of Co iii has been recorded in the region 1562-2564 (64,000 cm−1-39,000 cm−1) by Fourier transform (FT) spectroscopy, and in the region 1317-2500 (164,000 cm−1-40,000 cm−1) using a 10.7 m grating spectrograph with phosphor image plate detectors. The spectrum was excited in a cobalt-neon Penning discharge lamp. We classified 514 Co iii lines measured using FT spectroscopy, the strongest having wavenumber uncertainties approaching 0.004 cm−1 (approximately 0.2 m at 2000 , or 1 part in 107), and 240 lines measured with grating spectroscopy with uncertainties between 5 and 10 m . The wavelength calibration of 790 lines of Raassen & Ortí Ortin and 87 lines from Shenstone has been revised and combined with our measurements to optimize the values of all but one of the 288 previously reported energy levels. Order of magnitude reductions in uncertainty for almost two-thirds of the 3d64s and almost half of the 3d64p revised energy levels are obtained. Ritz wavelengths have been calculated for an additional 100 forbidden lines. Eigenvector percentage compositions for the energy levels and predicted oscillator strengths have been calculated using the Cowan code.</abstract><cop>United States</cop><pub>The American Astronomical Society</pub><doi>10.3847/0067-0049/223/1/12</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0003-2879-4140</orcidid></addata></record> |
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| subjects | ATOMIC AND MOLECULAR PHYSICS atomic data CALIBRATION COBALT Diffraction gratings EIGENVECTORS EMISSION SPECTRA EMISSION SPECTROSCOPY ENERGY LEVELS FOURIER TRANSFORMATION Fourier transforms Gratings (spectra) line: identification line: profiles Mathematical analysis methods: laboratory: atomic NEON OSCILLATOR STRENGTHS PENNING DISCHARGES Spectroscopic analysis Uncertainty Wavelengths |
| title | THE SPECTRUM AND TERM ANALYSIS OF CO iii MEASURED USING FOURIER TRANSFORM AND GRATING SPECTROSCOPY |
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