exponential decay

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exponential decay

[‚ek·spə′n en·chəl di′kā]
(physics)
The decrease of some physical quantity according to the exponential law N (t)= N0 e -t, where τ is a constant called the decay time.
References in periodicals archive ?
2a) decays exponentially for 2a > r[OMEGA] and, hence, [v'.
k, 2a; x) decays exponentially in v as (k, 2a) recedes along the rays k = 2av emanating from the origin outside [K.
which by Theorem 7 decays exponentially in v when [mu]/1 - [mu] > 2v/1 - v, or equivalently [mu] > 2v/1 + v.
k, 2a; x)] decays exponentially when receding from the origin with k > - v/1 - v (2a), and decays slowly otherwise.
210] activity decays exponentially with time and is not redistributed or remobilized by post-depositional processes (Oldfield, 1983; Appleby, 1993).
If g is the relaxation function and f is the resolvent kernel of -g'/g(0), they showed in [9] that the energy decays at the same rate as of (-f'), while, in [10], when (-f') decays exponentially, the energy decays at a polynomial rate.