decay constant


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decay constant

[di′kā ‚kän·stənt]
(physics)
The constant c in the equation I = I0 e -ct , for the time dependence of rate of decay of a radioactive species; here, I is the number of disintegrations per unit time. Also known as decay coefficient; disintegration constant; radioactive decay constant; transformation constant.
References in periodicals archive ?
0123), demonstrating that the time decay constant at 0 cm was significantly smaller than at locations well away from CWD.
A viscoelastic polymer, with a broad distribution of molecular weights, has a spectrum of relaxation processes, each with a relaxation time, the analog of the decay constant.
Through an analysis of nuclear forces, they indicate that only a small change in the strength of the coupling constant that characterizes the so-called strong force between nucleons would lead to a change in decay constants of many orders of magnitude.
0] is the amount of parent isotope in the sample at the time of its formation, t is the age of the sample, and [lambda] is the decay constant of the parent isotope.
lambda] * t)] concentrations follow, first-order kinetics b) Fish OC decay constants of 0.
Initial values and decay constants for terpene emissions for both first-order and double-exponential models were obtained by an iterative nonlinear regression analysis on the experimental data.