M1/E2 mixing ratio

The angular dependence of the scattering of 129-keV y-rays has been used to determine the E2/M1 mixing ratio as... 

The E2/M1 mixing ratio was 8 = 0-49(6). Interference effects were observed between the multipoles using an oriented single crystal of YbCls.dHjO. This is analogous to the Ru work, and the measured phase angle was in agreement with time-reversal invariance. 

The complexity of our angular distribution spectra do not permit reliable extraction of mixing ratios for the I+I-l transitions in the Trgg 2 band. Assuming that these are pure Ml, a 10 fold increase in the experimental B(M1)/B(E2) is observed between the one and three quasiparticle bands. 

The multipole mixing ratio S of mixed M1+E2 radiation (d = IE2/M1I) as well as the phase angle between E2 and Ml components can be obtained from the relative areas of the corresponding peaks (Kistner 1968 Wagner et al. 1968 Atac et al. 1968). The value of the phase angle has a relevance in testing the time reversal in electromagnetic interaction. No violation of time reversal was found in Mossbauer experiments (Kalvius et al. 1968 Mullen 1986). 

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