Fano lineshape parameter

Fig. 8.8. Evolution of a Rydberg series of Dubau-Seaton profiles as a function of the parameter C, for D = 1.2 and (a) B = —0.578 (b) B = +0.578. Values of C are given in the figure. The narrower resonances tend towards a Fano lineshape, whereas the broader resonances are more sinusoidal in shape. This is illustrated by some experimental examples in fig. 8.9 (after J.-P. Connerade [413, 414]).

Figure 7.28 Fano lineshape in H2. The predissociation of the N=2 [R(l) line] and N=1 [R(0) line] levels of the D1ri,ie(u = 5) state by the continuum of B 1is detected by monitoring the Lyman-a emission from one of the fragment atoms. The dots represent the lineshape calculated from the Fano formula [Eq. (7.9.1)] with parameter values Y(N = 2) = 14.5 cm 1,g(N = 2) = -9 r(jV = 1) = 4.8 cm 1,q(N = 1) = —18. These lineshapes should be compared to the symmetric profile of Fig. 7.16 (q = 00). The horizontal dotted line separates the interacting continuum Oi from the noninteracting continua [

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