decay time

decay time
   1. a unit of relative time used in physics. Decay time is similar to half life, but shorter and less familiar. It is the time required for an exponentially decaying process (such as radioactivity) to decrease to 1/e = 36.7879% of its original value. The fraction of activity remaining at time T, if T is measured in decay time units, is simply e-T. The decay time equals 0.693 147 half life.
   2. a unit of relative time used in various engineering applications. In many cases, it is the time required for a decaying process to decrease to 10% of its original value. However, a variety of definitions are used in different fields.

Dictionary of units of measurement. 2015.

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  • decay time — slopimo trukmė statusas T sritis fizika atitikmenys: angl. decay time; die away time; dying out time vok. Abklingdauer, f; Abklingzeit, f rus. время затухания, n; продолжительность затухания, f pranc. durée d’évanouissement, f …   Fizikos terminų žodynas

  • decay time — mažėjimo trukmė statusas T sritis fizika atitikmenys: angl. decay time; fall time vok. Abfallzeit, f; Abklingdauer, f; Abklingzeit, f rus. время спада, n; время спадания, n pranc. temps de descente, m …   Fizikos terminų žodynas

  • decay time — gesimo trukmė statusas T sritis fizika atitikmenys: angl. decay time; quenching time vok. Abklingzeit, f; Zerfallzeit, f rus. время затухания, n pranc. durée de déclin, f …   Fizikos terminų žodynas

  • decay time — skilimo trukmė statusas T sritis fizika atitikmenys: angl. decay time; decomposition time vok. Zerfallsdauer, f rus. время распада, n pranc. temps de désintégration, m …   Fizikos terminų žodynas

  • decay time — Physics. the time required for a collection of atoms of a particular radionuclide to decay to a fraction of the initial number equal to 1/e. Cf. e (symbol) (def. 1). Also called mean life. * * * …   Universalium

  • decay time — Physics. the time required for a collection of atoms of a particular radionuclide to decay to a fraction of the initial number equal to 1/e. Cf. e (symbol) (def. 1). Also called mean life …   Useful english dictionary

  • pulse decay time — impulso kritimo trukmė statusas T sritis fizika atitikmenys: angl. pulse decay time; pulse trailing edge time vok. Impulsabfallzeit, f; Impulsabklingzeit, f; Impulshinterflankendauer, f rus. время спада импульса, n; длительность спада импульса,… …   Fizikos terminų žodynas

  • scintillation decay time — blyksėjimų nykimo trukmė statusas T sritis fizika atitikmenys: angl. scintillation decay time vok. Szintillationsabfallzeit, f; Szintillationsabklingzeit, f rus. время спадания сцинтилляций, n pranc. temps de décroissance de la scintillation, m …   Fizikos terminų žodynas

  • decay constant — Physics. the reciprocal of the decay time. Also called decay rate, disintegration constant. [1930 35] * * * ▪ nuclear physics       proportionality between the size of a population of radioactive atoms and the rate at which the population… …   Universalium

  • Decay — Contents 1 Science and technlogy 1.1 Biology 1.2 Physics 1.3 …   Wikipedia

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