Electron
Last revised by Tariq Walizai
on 19 Jul 2024
Citation, DOI, disclosures and article data
Citation:
Jones J, Walizai T, Sciacca F, et al. Electron. Reference article, Radiopaedia.org (Accessed on 22 Jan 2025) https://doi.org/10.53347/rID-5306
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rID:
5306
Article created:
Disclosures:
At the time the article was created Jeremy Jones had no recorded disclosures.
View Jeremy Jones's current disclosures
Last revised:
19 Jul 2024,
Tariq Walizai
Disclosures:
At the time the article was last revised Tariq Walizai had no financial relationships to ineligible companies to disclose.
View Tariq Walizai's current disclosures
Revisions:
8 times, by
6 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:
- Ionising radiation
- 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
Multiple choice questions:
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