| alpha particle |
The nuclei of a helium atom (with two neutrons and two protons each) that are discharged by radioactive decay of many heavy elements, such as uranium-238 and plutonium-239.
출처: www.ndt.net/article/az/rt/rt.htm
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|---|---|
| alpha particle |
Alpha Particle - A positively charged, sub-atomic particle, a product of radioactive decay, similar to the nucleus of a helium atom, having 2 protons and 2 neutrons.
출처: csd.unl.edu/general/glossary-letter.asp
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| alpha particle |
A positively charged particle emitted from the nucleus during radioactive decay and having a mass and charge equal in magnitude to a helium nucleus that has 2 protons and 2 neutrons.
출처: www.oehs.wayne.edu/health%20phsics/glossaryA.html
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| alpha particle |
a helium nucleus with a mass of 4 AMU and a charge of 2+. Alpha particles are relatively heavy and cause serious damage to materials. But, they also cannot penetrate through more than a few mm of material.
출처: eies.njit.edu/~kebbekus/definitions_for_chapter_7....
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| alpha particle |
A type of fast ion emitted by many heavy radioactive nuclei, such as uranium. Actually, the nucleus (atom stripped of all electrons) of the gas helium.
출처: www-spof.gsfc.nasa.gov/Education/wgloss.html
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