Revised 17 September 2017 Click here to close this overlay, or press the "Escape" key on your keyboard. While wearing gloves, use a dry spatula to remove a very small chunk (0.1 cm 3) of sodium metal from the piece stored in the oil. The Sodium D emission lines (commonly called the ‘Sodium Doublet’) are spectral emission lines that have wavelengths within a few angstroms apart. 173/circlemultiply/circledivide/circledot/circlecopyrt/openbullet/bullet/equivasymptotic/equivalence/reflexsubset/reflexsuperset/lessequal/greaterequal/precedesequal/followsequal/similar/approxequal/propersubset/propersuperset/lessmuch/greatermuch/precedes/follows/arrowleft/spade] Sodium emits many lines in the visible region of the e.m. spectrum. The goal of this lab is to familiarize yourself with the Fabry-Perot Interferometer, to align it properly, and to measure the finesse using the sodium doublet. Because these are individual sharp lines as opposed to a band of frequencies, hdi is too long to measure with the interferometer. Each of these factors requires a detailed analysis that goes beyond the scope of this paper; but since each of them rescales the beats' amplitude symmetrically with respect to the value of the constant term in equation (3), one could argue that equation (7) should be still valid, provided we use the rescaled quantities. 10 0 obj Department of Training and Learning (DFA), University of Applied Sciences and Arts of Southern Switzerland, Locarno, Switzerland. The sodium lamp spectrum is dominated by the bright doublet known as the Sodium D-lines at 589.00 and 589.59 nanometers. 1074.4 936.9 671.5 778.4 462.3 462.3 462.3 1138.9 1138.9 478.2 619.7 502.4 510.5 2. The line at … A double-slit experiment is performed with sodium light (λ = 589.0 nm).The slits are separated by 1.14 mm, and the screen is 2.310 m from the slits. 585.3 831.4 831.4 892.9 892.9 708.3 917.6 753.4 620.2 889.5 616.1 818.4 688.5 978.6 500 500 500 500 500 500 500 500 500 500 500 277.8 277.8 277.8 777.8 472.2 472.2 777.8 /BaseFont/OCMNKC+CMSY10 500 500 611.1 500 277.8 833.3 750 833.3 416.7 666.7 666.7 777.8 777.8 444.4 444.4 Revisiting a method proposed by Fizeau in 1862, in this paper we measure the separation of the Na-doublet (the wavelength difference between the two emission D-lines of the sodium spectrum) with a didactical Michelson interferometer. /Subtype/Type1 797.6 844.5 935.6 886.3 677.6 769.8 716.9 0 0 880 742.7 647.8 600.1 519.2 476.1 519.8 544 516.8 380.8 386.2 380.8 544 516.8 707.2 516.8 516.8 435.2 489.6 979.2 489.6 489.6 /Encoding 7 0 R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 693.8 954.4 868.9 Spectrometry: The Sodium D lines and the Hydrogen Spectrum In this lab we will use the "D lines" in the sodium spectrum to check the calibration of a spectrometer. >> Science, Tech, Math Science Math Social Sciences Computer Science Animals & Nature Humanities History & Culture Visual Arts Literature … 489.6 489.6 489.6 489.6 489.6 489.6 489.6 489.6 489.6 489.6 272 272 272 761.6 462.4 oThe Lamb shift. 160/space/Gamma/Delta/Theta/Lambda/Xi/Pi/Sigma/Upsilon/Phi/Psi 173/Omega/ff/fi/fl/ffi/ffl/dotlessi/dotlessj/grave/acute/caron/breve/macron/ring/cedilla/germandbls/ae/oe/oslash/AE/OE/Oslash/suppress/dieresis] Slightly more interesting is this: will this uncertainty permit the resolution of the sodium doublet, D 1 and D 2, that is, will you be able to see those two lines as two distinct lines? /FontDescriptor 35 0 R /Name/F4 42 0 obj The yellow doublet of sodium is being used for adjusting optical devices to the best possible resolution. 277.8 500 555.6 444.4 555.6 444.4 305.6 500 555.6 277.8 305.6 527.8 277.8 833.3 555.6 By continuing to use this site you agree to our use of cookies. /F2 13 0 R 570 517 571.4 437.2 540.3 595.8 625.7 651.4 277.8] /Widths[366.7 558.3 916.7 550 1029.1 830.6 305.6 427.8 427.8 550 855.6 305.6 366.7 Published 15 December 2017. 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