Session:
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The Wonderful World of AJP
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Paper Type:
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Invited
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Title:
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Zeeman Effect Experiment with High-Resolution Spectroscopy for Advanced Physics Laboratory
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Meeting:
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2018 Winter Meeting: San Diego, CA |
Location:
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N/A |
Date:
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Time:
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9:00AM
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Author:
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Andrew Taylor,,
503-413-9182, as.taylor@outlook.com
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Co-Author(s):
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Alex Hyde, Oleg Batishchev
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Abstract:
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An experiment studying the physics underlying the Zeeman effect and Paschen-Back effect is developed for an advanced physics laboratory. We have improved upon the standard Zeeman effect experiment by eliminating the Fabry-Perot etalon, so that virtually any emission line in the visible spectrum can be analyzed. Emitted light from a ~1T magnet is analyzed by a Czerny-Turner spectrograph equipped with a small-pixel imaging CCD. The experiment was taught as part of the Principles of Experimental Physics course at Northeastern University to a combination of graduate/undergrad students. Zeeman’s original sodium experiment is recreated, and the splitting of argon and helium lines is measured as a function of field strength. The students analyze the proportionality of the splitting magnitude to both the B-field strength and lambda squared. The Bohr magneton is calculated and compared to theory. Student feedback is positive, citing the ability to experimentally witness a quantum mechanical effect.
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Footnotes:
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David Jackson
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Presentation:
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AAPT 2018 Winter Meeting - Andrew S Taylor - Zeeman Effect for Advanced Physics Lab - Final.pptx
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