Image:Fluorescent lighting spectrum peaks labelled.gif

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Image:Fluorescent lighting spectrum peaks labelled.gif

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From en-wiki created by en:user:Deglr6328

Spectrum with peaks labelled taken with an Ocean Optics HR2000 spectrometer of ambient light provided by fluorecent lamps. Spectrum taken by me. The spectrometer appears to be about ~.6 to .8 nm off judging from the location of known peaks. Interpretation of spectral peaks has been done using the NIST database of spectra for mercury , a paper on the photoluminescent properties of Eu:Y₂O₃ , also here and here , and an article on fluorescent light phosphors . This spectrum is not calibrated for intensity.

Peak number	Wavelength of peak (nm)	Species producing peak	Actual line location (nm)
1	405.4	mercury	404.656
2	436.6	mercury	435.833
3	487.7	terbium from Tb³⁺	~485 to 490
4	542.4	terbium from Tb³⁺	~543 to 544
5	546.5	mercury	546.074
6	577.7	likely terbium from Tb³⁺ or mercury	576.960 for Hg or ~578 for Tb
7	580.2	mercury or terbium from Tb³⁺	579.066 for Hg or ~580 for Tb
8	584.0	possibly terbium from Tb³⁺ or europium in Eu⁺³:Y₂O₃	~580
9	587.6	likely europium in Eu⁺³:Y₂O₃	~587
10	593.4	likely europium in Eu⁺³:Y₂O₃	~593
11	599.7	likely europium in Eu⁺³:Y₂O₃	~598
12	611.6	europium in Eu⁺³:Y₂O₃	~611
13	625.7	likely terbium from Tb³⁺	~625
14	631.1	likely europium in Eu⁺³:Y₂O₃	~630
15	650.8	likely europium in Eu⁺³:Y₂O₃	~650
16	662.6	likely europium in Eu⁺³:Y₂O₃	~661
17	687.7	likely europium in Eu⁺³:Y₂O₃	~687-688
18	693.7	likely europium in Eu⁺³:Y₂O₃	~693
19	707 and 709	likely europium in Eu⁺³:Y₂O₃	~707 and ~709
20	712.3	likely europium in Eu⁺³:Y₂O₃	~712
21	760.0	likely argon	758.9315 or 763.5106 (??)
22	811.0	likely argon	811.531

Note that the terbium could be either Tb³⁺, Ce³⁺: LaPO₄ or Tb³⁺:CeMgAl₁₁O₁₉ .

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	Date/Time	Dimensions	User	Comment
current	13:46, 20 October 2005	1,268×777 (18 KB)	Joonasl	(From en-wiki ------ Spectrum with peaks labelled taken with an Ocean Optics spectrometer [http://www.oceanoptics.com/Products/hr4000cguvnir.asp] of ambient light provided by fluorecent lamps. Spectrum taken by me. The spectrometer appears to be about ~.6 )

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Spectroscopy

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