Alpha Particle definition

Alpha Particle means a particle identical with a helium nucleus, emitted from the nucleus of a radioactive element.

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

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.

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.

• Table JBAT for Combined Radium−226 and Radium−228,Uranium, Gross Alpha Particle Activity, and Beta Particle and Photon RadioactivityContaminantBAT1.

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

• 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.

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

• One footnote notes that Adjusted Alpha, Radium 226 and Radium 228, and Uranium isotopes are only analyzed if Gross Alpha Particle Activity exceeds the parameter’s AL or AQL.

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

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

• The apparent “underfunding” of the outbreak and crisis response segment was due to the fortunate situation in which no major outbreaks or crises affected the Region during the biennium.