Microwave field effects on the time dependence of recombination fluorescence from non-polar solutions

Magnetic field effects in the recombination fluorescence of a three-spin radical ion/biradical ion system

“…After correction for the lifetime of the excited state t fl the expression for the intensity of fluorescence I(t) takes the form (see also ref. 19):…”

“…The population r DA,SS (t) of the singlet state of the pair D + / A À is given by the following expression: 19 r DA;SS ðtÞ ¼…”

“…Ŝ S Ak ð0ÞÞ; ði;k ¼ x;y;zÞ ð 21Þ here S ˆAi (t) are the x, y, z projections of vector S ˆA(t) defined in eqn. (19). Operators S ˆAi (t) and S ˆAk (0) are considered in the basis of products of spin states of the radical centres A À and R .…”

Time evolution of the spin state of the radical ion pair in the microwave field: an analytical solution

“…Because of rather large HFI constants in radical anion of C 6 F 6 the populations of |S and |T z states can be considered equal at any time, and ρ ss (t) = smoothing routines, and the figure shows that noise level increases with time. As was shown in work [12], it is proportional to t 3/4 .…”

“…As was shown in work [12] in the presence of spin relaxation time evolution of the spin operators for the partners of the radical pair ŜA (t) and ŜD (t) is describe with a system of equations in the frame rotating at the frequency of the applied microwave field that are similar to Bloch equations [20,21]. For operator ŜA (t) the system is written as:…”