Charged particle

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In physics, a charged particle is a particle with an electric charge. For example, some elementary particles, like the electron or quarks are charged.^[1] 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 and atomic nuclei
• positrons (antielectrons)
• alpha particles
• positive charged pions
• cations

Negatively charged particles

• electrons
• antiprotons
• muons
• tauons
• negative charged pions
• anions

Particles with zero charge

• neutrons
• photons
• neutrinos
• neutral pions
• z boson
• higgs boson
• atoms

References

• "Ionizing radiation" (PDF). Archived from the original (PDF) on 2015-10-11.
• "Specific Ionization & LET". www.mun.ca. Retrieved 2016-06-21.
• "α입자와 물질과의 상호작용". Radiation & biology & etc. 25 April 2012. 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.
• "range | particle radiation". Encyclopædia Britannica. Retrieved 2016-06-21.

External links

• Charged particle motion in E/B Field