decay curve

decay curve

[di′kā ‚kərv]
(nuclear physics)
A graph showing how the activity of a radioactive sample varies with time; alternatively, it may show the amount of radioactive material remaining at any time.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Equivalent stiffness decay curve when the specimen is loaded is shown in Figure 9.
Luminescence decay curve is well fitted using a double-exponential function.
The values of the equivalent pixels of the image volume correspond to multiple samples of the decay curve that can be fitted by least-squares methods for yielding the decay parameters.
Figure 9 depicts the semilogarithmic plots of the room temperature PL decay curve of [Eu.sup.3+] doped ZnMo[O.sub.4] nanoplates under the excitation of 375 nm.
Although we monitored dung samples only once every four weeks, pooling dung records from all three habitats provided a smooth dung decay curve (Fig.
Through the application of leaf litter decay curve models proposed by Olson (1963), with constant K, and Coelho and Borges (2005), with variable K, the mathematical parameters showed that the second model best described the decomposition process (Table 1), although they showed no significant differences between the groups (p> 0.05).
Today, he relishes the statistic that, as the it is selling even more than before and defying the decay curve that says designs should peak 18 months after launch.
The latter, along with measurement of the decay curve, was completed for BNL Emergency Operations to obtain a better understanding of the building dynamics and shelter-in-place requirements.
Because the different polymer materials used in the manufacture of plastics display specific fluorescence lifetimes, the form of the decay curve can be used to identify their chemical nature.
This study uses these constants to regenerate point data for the decay curve, and then the decay constants of the single, double, and triple multiple exponential equations were calculated separately.