Compared to a large number of works on time evolution of the donor fluorescence

[1-7]

little has been done on that of accepter [trap] fluorescence in energy transfer study Recently

Huber presented theoretical expressions of time development of accepter fluorescence for static and fast D-D transfer models under the condition CA

<

<

1

[8]

. In this paper

we have arrived at similar conclusion via an alternative method The distribution function of D-A transfer rates is used.The result derived in this way for static model is an extension of the Huber’s. The decay of donor can be expressed as

[6]

F(t)=exp(-λt)f(t)

where γ is transition rate of donor in the system without accepter

f(t) is related only with D-D and D-A transfer For static and fast D-D transfer

the distribution function of D-A transfer rates

φ

is independent of time.