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 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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Alpha Particle means a positively charged atomic particle consisting of 2 neutrons and 2 protons.
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Examples of Alpha Particle in a sentence

  • If Gross Alpha Particle Activity is greater than 15 pCi/L, then test for adjusted gross alpha particle activity.

  • MCLs and Monitoring - Gross Alpha Particle Activity, Radium-226, Radium-228, and Uranium 107§64443.

  • Thousands of poor children and youths from these two countries are not enrolled in school, as they have no access to pre-school, primary or secondary education opportunities.• There is no doubt that Central America needs to increase and improve investment in education.

  • MIRD Cellular S Values: Self-Absorbed Dose per Unit Cumulated Activity for Selected Radionuclides and Monoenergetic Electron and Alpha Particle Emitters Incorporated into Different Cell Compartments.

  • The cooperation involves German provision of Alpha Particle X-Ray Spectrometer (APXS) engineering and flight models, which will be part of the two rovers' Athena payloads.

  • This in turn can make the spectrum measurement during the pulse very difficult [GOZ96].2.3.5. Associated (Alpha) Particle – Time-of-Flight Neutron Analysis (API-TOF):The Associated (alpha) Particle technique (or API, Associated Particle Imaging) uses an interesting property of the deuterium-tritium (D-T) reaction previously described, namely that the source emits a lower energy alpha particle simultaneously with, and at exactly at 180 degrees (“back-to-back”) to, each fast 14 MeV neutron produced.

  • Alpha Particle: A positively charged particle ejected spontaneously from the nuclei of some radioactive elements.

  • These parameters are to be analyzed only if the concentration of Gross Alpha Particle Activity exceeds the parameter’s AL or AQL.

  • Table JBAT for Combined Radium-226 and Radium-228, Uranium,Gross Alpha Particle Activity, and Beta Particle and Photon Radioactivity ContaminantBAT1.

  • Ibid, Designation D–1943–81, ‘‘Standard Test Method for Alpha Particle Radioac- tivity of Water’’.

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

  • 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;

  • Biodegradable means degradable through a process by which fungi or bacteria secrete enzymes to convert a complex molecular structure to simple gasses and organic compounds.

  • Geothermal fluid means water in any form at temperatures greater than 120

  • Drug Substance means an active ingredient that is intended to furnish pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease or to affect the structure or any function of the human body, but does not include intermediates used in the synthesis of such ingredient.

  • Volatile organic compounds or “VOC” means any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, which participates in atmospheric photochemical reactions.

  • multiple sclerosis means an inflammatory, nervous system disease in which the myelin sheaths around the axons of nerve cells of the brain and spinal cord are damaged, leading to demyelination and affecting the ability of nerve cells in the brain and spinal cord to communicate with each other;

  • Volatile organic compound (VOC) means any organic compound as well as the fraction of creosote, having at 293.15 K a vapour pressure of 0.01 kPa or more, or having a corresponding volatility under the particular conditions of use;

  • Cannabinoid extract means a substance obtained by separating cannabinoids from marijuana by:

  • COVID-19 symptoms means fever of 100.4 degrees Fahrenheit or higher, chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, new loss of taste or smell, sore throat, congestion or runny nose, nausea or vomiting, or diarrhea, unless a licensed health care professional determines the person’s symptoms were caused by a known condition other than COVID-19.

  • Alternative nicotine product means any vaping product, whether or not it includes nicotine, including electronic smoking devices, that can be ingested into the body by chewing, smoking, absorbing, dissolving, inhaling, or by any other means. ‘Alternative nicotine product’ does not include:

  • Therapeutically equivalent means a drug product with the same efficacy and toxicity when administered to an individual as the originally prescribed drug as provided for in Section 39‑24‑40.

  • Isomer means all enantiomers and diastereomers.

  • Aerosol coating product means a pressurized coating product containing pigments or resins that dispenses product ingredients by means of a propellant, and is packaged in a disposable can for hand-held application, or for use in specialized equipment for ground traffic/marking applications.

  • Tissue means a portion of the human body other than an organ or an eye. The term does not include blood unless the blood is donated for the purpose of research or education.

  • Volatile Organic Compound (VOC means any compound containing at least one atom of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, and excluding the following: