Charged particle
{{Short description|Physical particle with an electric charge}}
{{No footnotes|date=January 2019}}
In physics, a charged particle is a particle with an electric charge. For example, some elementary particles, like the electron or quarks are charged.{{cite book|last1=Frisch|first1=David H.|author1-link=David H. Frisch|last2=Thorndike|first2=Alan M.|title=Elementary Particles|year=1964|publisher=David Van Nostrand|location=Princeton, New Jersey|page=54}} Some composite particles like protons are charged particles. An ion, such as a molecule or atom with a surplus or deficit of electrons relative to protons are also charged particles.
A plasma is a collection of charged particles, atomic nuclei and separated electrons, but can also be a gas containing a significant proportion of charged particles.
Charged particles are labeled as either positive (+) or negative (-). The designations are arbitrary. Nothing is inherent to a positively charged particle that makes it "positive", and the same goes for negatively charged particles.
Examples
= Positively charged particles =
- protons
- positrons (antielectrons)
- positively charged pions
- alpha particles
- cations
= Negatively charged particles =
- electrons
- antiprotons
- muons
- tauons
- negative charged pions
- anions
= Particles with zero charge =
See also
- Charge carrier – refers to moving charged particles that create an electric current
References
{{reflist}}
- {{Cite web|url=http://ocw.mit.edu/courses/nuclear-engineering/22-01-introduction-to-ionizing-radiation-fall-2006/lecture-notes/energy_dep_hcp.pdf|title=Ionizing radiation|url-status=dead|archive-url=https://web.archive.org/web/20151011134842/http://ocw.mit.edu/courses/nuclear-engineering/22-01-introduction-to-ionizing-radiation-fall-2006/lecture-notes/energy_dep_hcp.pdf|archive-date=2015-10-11}}
- {{Cite web|url=https://www.mun.ca/biology/scarr/Specific_Ionization_&_LET.html|title=Specific Ionization & LET|website=www.mun.ca|access-date=2016-06-21}}
- {{Cite web|url=http://spyeyez.tistory.com/16|title=α입자와 물질과의 상호작용|website=Radiation & biology & etc.|date=25 April 2012|access-date=2016-06-21}}
- {{Cite web |url=http://www.med.harvard.edu/jpnm/physics/nmltd/radprin/sect7/7.1/7_1.3.html |title=7_1.3 The Bragg Curve |website=www.med.harvard.edu |access-date=2016-06-21 |url-status=dead |archive-url=https://web.archive.org/web/20160301184458/http://www.med.harvard.edu/jpnm/physics/nmltd/radprin/sect7/7.1/7_1.3.html |archive-date=2016-03-01 }}
- {{Cite web|url=http://www.britannica.com/science/range-particle-radiation|title=range {{!}} particle radiation|website=Encyclopædia Britannica|access-date=2016-06-21}}
External links
- [http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=36 Charged particle motion in E/B Field]
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