The solution to this equation is given in the previous section, where the sum of \ lambda _ 1 + \ lambda _ 2 \, is treated as a new total decay constant \ lambda _ c.
32.
The equation indicates that the decay constant has units of " ", and can thus also be represented as 1 /, where is a characteristic time of the process called the " time constant ".
33.
Symbolically, this process can be expressed by the following differential equation, where " N " is the quantity and ? ( lambda ) is a positive rate called the "'exponential decay constant " ':
34.
A radio active material at a given instant emit 3000 particles per minute, 10 minute later it emits 1500 particles per minute . find decay constant and half life . Preceding talk ) 07 : 45, 12 February 2011 ( UTC)
35.
If you count the decays of a long-lived isotope you could extrapolate linearly and come to the conclusion that there will be no material left after a certain time ( the multiplicative inverse of this time is called the decay constant ).
36.
The decay of polarization is approximated with a decay constant \ hbar \ gamma = 0.13 \, \ mathrm { meV } and \ alpha ( E ) is computed as function of the pump field's photon energy E.
37.
The decay constant, ?, which is the time taken for the intensity of light to fall to 1 / e of the initial intensity, is called the ring-down time and is dependent on the loss mechanism ( s ) within the cavity.
38.
While the decay of a single atom occurs spontaneously, the decay of an initial population of identical atoms over time " t ", follows a decaying exponential distribution, " e " ?t ", where ? is called a decay constant.
39.
The subscripts simply refer to the respective nuclides, i . e . " } } is the number of nuclides of type, } } is the initial number of nuclides of type, " } } is the decay constant for-and similarly for nuclide.
40.
Each atom " lives " for a finite amount of time before it decays, and it may be shown that this mean lifetime is the arithmetic mean of all the atoms'lifetimes, and that it is, which again is related to the decay constant as follows:
