Particle radiation - Wikipedia

 

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Sep 05,  · Lung Stereotactic Body Radiation Therapy (SBRT) dose gradient and PTV volume: a retrospective multi-center analysis. The treatment of lung lesions with stereotactic body radiation therapy calls for highly conformal dose, which is evaluated by a number of metrics. Aug 28,  · News about Radiation, including commentary and archival articles published in The New York Times. The Scientist's articles tagged with: radiation. Exposing male rats to nonionizing radiation increased the animals’ risk of brain and heart tumors in a study, but the findings are far from conclusive.


How Radiation Threatens Health - Scientific American


Particle radiation is the radiation of energy by means of fast-moving subatomic particles. Particle radiation is referred to as a particle beam if the particles are all moving in the same direction, similar to a light beam. Due to the wave—particle dualityall moving particles also have wave character.

Higher energy particles more easily exhibit particle characteristics, while lower energy particles more easily exhibit wave characteristics. Particles can be electrically charged or uncharged:. Particle radiation can be emitted by an unstable atomic nucleus via radioactive decayor it can be the product from some other kind of nuclear reaction, radiation articles.

Many types of particles may be emitted:. Charged particles electronsmesons, protonsalpha particles, heavier HZE ionsetc. Ion irradiation is radiation articles used in the semiconductor industry to introduce dopants into materials, a method known as ion implantation.

Particle accelerators can also produce neutrino beams. Neutron beams are mostly produced by nuclear reactors. For the production of electromagnetic radiationthere are many methods, depending upon the wave length see electromagnetic spectrum, radiation articles. In radiation protectionradiation is often separated into two categories, ionizing and non-ionizingto denote the level of danger posed to humans. Ionization is the process of removing electrons from atoms, leaving two electrically charged particles an electron and a positively charged ion behind.

The negatively charged electrons and positively charged ions created by ionizing radiation may cause damage in living tissue. Basically, a particle is ionizing if its energy is higher than the ionization energy of a typical substance, i.

According to the International Commission on Non-Ionizing Radiation articles Protectionelectromagnetic radiations from ultraviolet to infrared, radiation articles, to radiofrequency including microwave radiation, static and time-varying electric and magnetic fields, and ultrasound belong to the non-ionizing radiations. The charged particles mentioned above all belong to the ionizing radiations. When passing through matter, radiation articles, they ionize radiation articles thus lose energy in many small steps.

The distance to the point where the charged particle has lost all its energy is called the range of the particle. The range depends upon the type of particle, its initial energy, and the material it traverses. Similarly, radiation articles, the energy loss per unit path length, the ' stopping power ', depends on the type and energy of the charged particle and upon the material. The stopping power and hence, radiation articles, the density of ionization, usually increases toward the end of range and reaches a maximum, radiation articles, the Bragg Peakshortly before the energy drops to zero.

From Wikipedia, the radiation articles encyclopedia. It has been suggested that this article be merged into Particle decay. Discuss Proposed since July This article does not cite any sources. Please help improve this article by adding citations to reliable sources.

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Radiation physics and health. Earth's energy budget Electromagnetic radiation Synchrotron radiation Thermal radiation Black-body radiation Particle radiation Gravitational Radiation Cosmic background radiation Cherenkov radiation Askaryan radiation Bremsstrahlung Unruh radiation Dark radiation.

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See also: the categories Radiation effectsRadioactivityRadiobiologyand Radiation protection, radiation articles. Categories : Radiation articles. Hidden categories: Articles to be merged from July All articles to be merged Use dmy dates from June Articles lacking sources from February All articles lacking sources.

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Radiation Oncology | Articles

 

radiation articles

 

Particle radiation is the radiation of energy by means of fast-moving subatomic bigshoopsa.cfle radiation is referred to as a particle beam if the particles are all moving in the same direction, similar to a light beam.. Due to the wave–particle duality, all moving particles also have wave bigshoopsa.cf energy particles more easily exhibit particle characteristics, while lower energy. Sep 05,  · Lung Stereotactic Body Radiation Therapy (SBRT) dose gradient and PTV volume: a retrospective multi-center analysis. The treatment of lung lesions with stereotactic body radiation therapy calls for highly conformal dose, which is evaluated by a number of metrics. Feb 27,  · Radiation is a physical agent, which is used to destroy cancer cells. The radiation used is called ionizing radiation because it forms ions (electrically charged particles) and deposits energy in the cells of the tissues it passes through. This deposited energy can kill cancer cells or cause genetic changes resulting in cancer cell bigshoopsa.cf by: