Charged particle
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In physics, a charged particle is a particle with an electric charge. It may be an ion, such as a molecule or atom with a surplus or deficit of electrons relative to protons. It can be the electrons and protons themselves, as well as other elementary particles, like positrons. It may also be an atomic nucleus devoid of electrons, such as an alpha particle, a helium nucleus. Neutrons have no charge. 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. Plasma is called the fourth state of matter because its properties are quite different from solids, liquids and gases.
Examples
Positively charged particles
- protons and atomic nuclei
- positrons (antielectrons)
- alpha particles
- positive charged pions
- cations
Negatively charged particles
- electrons
- antiprotons
- muons
- tauons
- negative charged pions
- anions
Particles without an electric charge
References
External links
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- ^ "Ionizing radiation" (PDF). Archived from the original (PDF) on 2015-10-11.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ "Specific Ionization & LET". www.mun.ca. Retrieved 2016-06-21.
- ^ "α입자와 물질과의 상호작용". Radiation & biology & etc. Retrieved 2016-06-21.
- ^ "7_1.3 The Bragg Curve". www.med.harvard.edu. Archived from the original on 2016-03-01. Retrieved 2016-06-21.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ "range | particle radiation". Encyclopædia Britannica. Retrieved 2016-06-21.