Messung des Elektroneneinfangs am Kern176mLu
The electron capture of176mLu to the ground state and to the first excited state of176Yb has been observed by measuring the YbK x-rays and the 82,2 keV gamma-rays from the gamma decay of the first excited state in176Yb. With the data of the 88,36 keV gammarays following the beta decay of176mLu to the first excited state of176Hf the electron capture/beta decay ratio of176mLu was found to be (0,95±0,16)·10−4. The electron capture branching ratio to the ground state and to the first excited state of176Yb was found to be 40/60±30%. By analyzing the 88,36keV gamma-rays and the HfKx-rays the halflife of176mLu was evaluated to be 3,66±0,04 h. The value for theK-conversion coefficient of the 88,36keV transition was determined from the x-ray/gamma-ray ratio to be 1,19±0,09.