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 ?
Evidence Against Solar Influence on Nuclear Decay Constants.
0123), demonstrating that the time decay constant at 0 cm was significantly smaller than at locations well away from CWD.
Kim, "Effect of Temperature on the Decay Constant of the Axial Solid Holdup Profile in the Splash Region of a Gas Fluidized Bed," HWAHAK KONGHAK 35, 300-306 (1997c).
Equation 13-3 is a linear function in which the slope of the line [lambda] is the decay constant.
0 computes decomposition of the above- and below-ground residue according to the exponential decay constant and the temperature and precipitation values in the Climate component.
As the mass loss is easier to measure than the decay constants, and as it provides the same information, we propose to use it as an index of decomposability (LDI) by choosing the mass loss at the earliest sampling time, that measured after one week incubation.
In the ANCOVA, decay constant was the dependent variable, litter type (leaf, stem, root) was the independent categorical variable, and litter quality was the continuous independent variable.
14]C, with a half-life of 5730 years, or with a decay constant ln2/(5730 years) = 0.
In scenarios B and C, as a result of increasing flow capacity of the air cleaner and introducing some flow obstructions in the room, lower values of the decay constant were obtained.
Through a single parameter, the decay constant of humus, we then calibrated predicted masses of the forest floor to two measurements at HBEF.
The equation with a time-dependent decay constant yields expected values of N well within an order of magnitude of the observed values.
The rate of loss of SOM is based on the instantaneous decay constant k, which expresses the proportion of the pool that turns over per unit time.