X-Ray Fluorescence (XRF) spectrometry for materials analysis and discovering "the atomic number"
written by
Asma Khalid, Aleena Tasneem Khan, and Muhammad Sabieh Anwar
published by
the LUMS School of Science and Engineering
In this experiment students use XRF spectroscopy to analyze a sample's elemental composition. From the characteristic X-ray energies, Moseley's Law, a proof of the existence of the atomic number, is verified. The atomic number increases in regular steps with an increase in the characteristic X-ray energy. We will use this relationship to find the Rydberg's energy constant and screening coefficient for K X-rays.
This lab is designed for the student to learn to:
1. differentiate between characteristic X-rays and Bremsstrahlung radiations, 2. use characteristic X-rays to identify elements, 3. acquire a spectrum, calibrate it and use it for qualitative (element identification) as well as quantitative (elemental concentration) analysis, and finally, 4. verify Moseley's law and the validity of an atomic number.
<a href="https://advlabs.aapt.org/items/detail.cfm?ID=11727">Khalid, A, A. Khan, and M. Anwar. X-Ray Fluorescence (XRF) spectrometry for materials analysis and discovering "the atomic number". Lahore Cantt: LUMS School of Science and Engineering, Pakistan, July 23, 2011.</a>
A. Khalid, A. Khan, and M. Anwar, (LUMS School of Science and Engineering, Pakistan, Lahore Cantt, 2011), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11727&DocID=2608).
A. Khalid, A. Khan, and M. Anwar, X-Ray Fluorescence (XRF) spectrometry for materials analysis and discovering "the atomic number" (LUMS School of Science and Engineering, Pakistan, Lahore Cantt, 2011), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11727&DocID=2608>.
Khalid, A., Khan, A., & Anwar, M. (2011, July 23). X-Ray Fluorescence (XRF) spectrometry for materials analysis and discovering "the atomic number". Retrieved December 7, 2024, from LUMS School of Science and Engineering, Pakistan: https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11727&DocID=2608
Khalid, A, A. Khan, and M. Anwar. X-Ray Fluorescence (XRF) spectrometry for materials analysis and discovering "the atomic number". Lahore Cantt: LUMS School of Science and Engineering, Pakistan, July 23, 2011. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11727&DocID=2608 (accessed 7 December 2024).
Khalid, Asma, Aleena Tasneem Khan, and Muhammad Sabieh Anwar. X-Ray Fluorescence (XRF) spectrometry for materials analysis and discovering "the atomic number". Lahore Cantt: LUMS School of Science and Engineering, Pakistan, 2011. 23 July 2011. 7 Dec. 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11727&DocID=2608>.
@misc{
Author = "Asma Khalid and Aleena Tasneem Khan and Muhammad Sabieh Anwar",
Title = {X-Ray Fluorescence (XRF) spectrometry for materials analysis and discovering "the atomic number"},
Publisher = {LUMS School of Science and Engineering, Pakistan},
Volume = {2024},
Number = {7 December 2024},
Month = {July 23, 2011},
Year = {2011}
}
%0 Electronic Source %A Khalid, Asma %A Khan, Aleena Tasneem %A Anwar, Muhammad Sabieh %D July 23, 2011 %T X-Ray Fluorescence (XRF) spectrometry for materials analysis and discovering "the atomic number" %I LUMS School of Science and Engineering, Pakistan %V 2024 %N 7 December 2024 %8 July 23, 2011 %9 application/pdf %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11727&DocID=2608
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