| Autor: |
David Matthew Walters, William S. Hooker, Yogesh K. Vohra, Randolph S. Peterson, Paul A. Baker, Elizabeth W. Shroyer |
| Rok vydání: |
2005 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:486-490 |
| ISSN: |
0168-583X |
| DOI: |
10.1016/j.nimb.2005.07.059 |
| Popis: |
The usual weekly laboratory experiment for the upper-division modern physics lab was replaced with a theme of studying diamond films grown on natural diamond. The diamonds were grown at the University of Alabama at Birmingham and were studied at university physics laboratories at UAB, Alabama A&M University, The University of the South, and the University of North Texas. Undergraduate students measured the molar fraction of 13 C in diamond films grown by a microwave-assisted chemical vapor deposition process on 〈1 1 0〉 oriented diamond plates. The molar fraction of 13 C for all diamond films except the 100% and 1% was determined from Rutherford backscattering measurements at 150°. Raman scattering of a 514.5 nm Ar-ion laser beam from the same diamond films provided empirical determination of the molar fraction of 13 C of the diamond films. Results from these measurements show good agreement between the nominal gas flows, Rutherford scattering, and empirical Raman determinations of the 13 C molar fractions. This work took 10 lab periods and a long weekend. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect