spontaneous emission of radiation at a

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• Amplified spontaneous emission — (ASE) or superluminescence is light, produced by spontaneous emission, that has been optically amplified by the process of stimulated emission in a gain medium.Origins and problemsASE is produced when a laser gain medium is pumped to produce a… …   Wikipedia

• Radiation — Radiation, as in physics, is energy in the form of waves or moving subatomic particles emitted by an atom or other body as it changes from a higher energy state to a lower energy state. Radiation can be classified as ionizing or non ionizing… …   Wikipedia

• Emission coefficient — is a coefficient in the power output per unit time of an electromagnetic source, a calculated value in physics. It is also used as a measure of environmental emissions (by mass) per MWh of electricity generated, see: Emission factor. Scattering… …   Wikipedia

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• Emission spectrum — The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted by the element s atoms or the compound s molecules when they are returned to a lower energy state. Each element s …   Wikipedia

• Radiation poisoning — Radiation poisoning, also called radiation sickness or a creeping dose , is a form of damage to organ tissue due to excessive exposure to ionizing radiation. The term is generally used to refer to acute problems caused by a large dosage of… …   Wikipedia

• radiation — 1. The act or condition of diverging in all directions from a center. 2. The sending forth of light, short radio waves, ultraviolet or x rays, or any other rays for treatment or diagnosis or for other purpose. Cf.:irradiation (2). 3. SYN:… …   Medical dictionary

• spontaneous radiation — savaiminis spinduliavimas statusas T sritis radioelektronika atitikmenys: angl. spontaneous radiation vok. spontane Strahlung, f rus. спонтанное излучение, n pranc. émission spontanée, f …   Radioelektronikos terminų žodynas

• spontaneous radiation — savaiminis spinduliavimas statusas T sritis fizika atitikmenys: angl. spontaneous radiation vok. spontane Strahlung, f rus. самопроизвольное излучение, n; спонтанное излучение, n pranc. émission spontanée, f …   Fizikos terminų žodynas

• emission — A discharge; referring usually to a discharge of the male internal genital organs into the internal urethra; the contents of the organs, including sperm cells, prostatic fluid, and seminal vesicle …   Medical dictionary

• émission spontanée — savaiminis spinduliavimas statusas T sritis radioelektronika atitikmenys: angl. spontaneous radiation vok. spontane Strahlung, f rus. спонтанное излучение, n pranc. émission spontanée, f …   Radioelektronikos terminų žodynas