Determination of multipolarities of γ-transitions in La,Gd,Tb,Dy,Ho,Er,Tm,Yb nuclei on the basis of modified rechniques of beta-spectrogram processing

Spectra of internal conversion electrons from magnetic spectrographs on the basis of a modified procedure of processing the beta-spectrograms were studied. Multipolarities of some γ-transitions in 133,135La, 149,151,152,154Gd, 153,155Tb, 155,156,158,159,160,161Dy, 160,161Ho, 161-167Er, 167,169Tm, 167,169,171Yb nuclei were determined. 61 transitions have been considered. Multipolarities of two transitions of 177 and 198 keV Tm transitions have been determined taking into account the penetration of atomic electrons into nuclei. Along with δ2 for these transitions nuclear parameters of penetration λ have been also determined. For mixed multipolarities transitions the reduced probabilities and forbiddance factors by Weisskopf have been also calculated