Electron
Last revised by Francesco Sciacca on 25 Oct 2023
Citation, DOI, disclosures and article data
Citation:
Jones J, Sciacca F, Sharma R, et al. Electron. Reference article, Radiopaedia.org (Accessed on 19 Mar 2024) https://doi.org/10.53347/rID-5306
Permalink:
rID:
5306
Article created:
1 Jan 2009,
Jeremy Jones ◉
Disclosures:
At the time the article was created Jeremy Jones had no recorded disclosures.
View Jeremy Jones's current disclosures
Last revised:
25 Oct 2023,
Francesco Sciacca ◉
Disclosures:
At the time the article was last revised Francesco Sciacca had no financial relationships to ineligible companies to disclose.
View Francesco Sciacca's current disclosures
Revisions:
7 times, by
5 contributors -
see full revision history and disclosures
Sections:
Synonyms:
- Electrons
- Electron (e)
The electron is a subatomic particle that has negligible mass (9.109 x 10-31 kg) and is negatively charged (-1.6 x 10-19 Coulombs). The properties of x-rays and their interaction with matter concern the orbiting electrons within the atom.
In classical physics the electrons orbit the central positively charged nucleus in shells, the outermost one of which is termed the valence shell.
History and etymology
It was J. J. Thomson, English physicist (Nobel Prize, 1906) who discovered the electron in 1897.
Quiz questions
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References
- 1. Penelope Allisy-Roberts, Jerry R. Williams. Farr's Physics for Medical Imaging. (2019) ISBN: 9780702028441
- 2. Philip Palin Dendy, Brian Heaton. Physics for Diagnostic Radiology, Third Edition. (1999) ISBN: 9780750305914
- 3. Bordé C. Base Units of the SI, Fundamental Constants and Modern Quantum Physics. Phil Trans R Soc A. 2005;363(1834):2177-201. doi:10.1098/rsta.2005.1635 - Pubmed
- 4. Downard K. J. J. Thomson Goes to America. J Am Soc Mass Spectrom. 2009;20(11):1964-73. doi:10.1016/j.jasms.2009.07.008 - Pubmed
Incoming Links
Articles:
- Photostimulable phosphors
- Oxygen
- X-ray tube
- Ionisation
- Ionisation chamber
- Valence shell
- Paramagnetism
- Structure of the atom
- Milliampere-seconds (mAs)
- William D Coolidge
- X-rays
- Beryllium
- Cathode (x-ray tube)
- Anode (x-ray tube)
- Bremsstrahlung radiation
- Pair production
- Linear energy transfer
- Kerma
- Magnetism
- Electron-positron annihilation
Multiple choice questions: