Alpha Particle definition

Alpha Particle means a particle identical with a helium nucleus, emitted from the nucleus of a radioactive element.
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Alpha Particle means a positively charged atomic particle consisting of 2 neutrons and 2 protons.
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Alpha Particle means a positively charged particle emitted by certain radioactive materials. It is the least penetrating of the three common types of radiation (alpha, beta and gamma) and usually is not dangerous to plants, animals or humans.
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Examples of Alpha Particle in a sentence

  • Proceedings of the Seminar on Alpha Particle Spectometry and Low Level Measurement, 563-71.

  • Thickness of the product/target is controlled by: - mechanical and electrical thickness measuring tools such as: micrometer screw and calliper, and induction gauge (range 1±0.1 ÷ 500 ±10 µm); - weighing defined area (using microbalance with 1 µg precision); - Alpha Particle Energy Loss (▇▇▇▇) measurements.

  • Geryes T, Monsanglant-Louvet C, ▇▇▇▇▇▇ L, ▇▇▇▇▇ E, Application of the Monte Carlo Method to Study the Alpha Particle Energy Spectra for Radioactive Aerosol Sampled by an Air Filter, Health Phys 97:125–131; 2009-b.

  • A non-exhaustive list includes: - Alpha Particle Spectroscopy setup; - X-ray transmission setup; - Field Emission Scanning Electron Microscope – XPS; - Atomic Force Microscope; - Micro-Raman spectroscopy; - FIB-TEM; - XRD Among the target properties that can be studied, one can include thickness, thickness uniformity, surface imaging, elemental purity, crystal structure and order.

  • The deposit thickness is controlled during the deposition process with Quartz Crystal Monitor QCM and the thickness of the final product/target and its distribution over the target area is cross-evaluated with ▇▇▇▇ (Alpha Particle Energy Loss) measurements.

Related to Alpha Particle

  • Pump spray means a packaging system in which the product ingredients within the container are not under pressure and in which the product is expelled only while a pumping action is applied to a button, trigger or other actuator.

  • Pyrolysis means the thermal degradation of a substance in the absence of any oxidising agent, which does not form part of the substance itself, to produce char and gas and/or liquid; and

  • Therapeutically equivalent drug products means drug products that contain the same active ingredients and are identical in strength or concentration, dosage form, and route of administration and that are classified as being therapeutically equivalent by the U.S. Food and Drug Administration pursuant to the definition of "therapeutically equivalent drug products" set forth in the most recent edition of the Approved Drug Products with Therapeutic Equivalence Evaluations, otherwise known as the "Orange Book."

  • Prosthesis means an artificial substitute for a missing body part.

  • Organic compound means any compound containing at least the element carbon and one or more of hydrogen, halogens, oxygen, sulphur, phosphorus, silicon or nitrogen, with the exception of carbon oxides and inorganic carbonates and bicarbonates;