E1-M2-E3 mixing of the 1241.7 keV transition in147Yb |
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| Authors: | K E G Löbner J A Mirza |
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| Institution: | 1. Physik-Department, Technische Universit?t München, Germany
2. From Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Rawalpindi, Pakistan
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| Abstract: | The half-life of theI,K π=2, 2? state at 1318 keV in174Yb has been measured in the173Yb(n, γ) reaction to be 0.486±0.015 ns. This half-life determines the absolute transition probabilities of the gamma-ray transitions to the ground state rotational band yielding the following hindrance factors relative to the Weisskopf estimate:F W(M 2; 2, 2?→0, 0+)=350;F W(M2; 2, 2?→2, 0+)≧77F W(M 2;2, 2?→4, 0+)>740;F W(E 1; 2, 2?→2, 0+)=4.5×106;F W(E 3; 2, 2?→2, 0+)≈0.1;F W(E 3; 2, 2?→4, 0+)≈0.4. These data are compared to analogous transitions in neighboring nuclei. |
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