自行研制了多普勒能移反冲距离法测量寿命的装置，对装置的性能作了测试，并首次在国内用于核实验。用３１Ｐ轰击９３Ｎｂ靶测得了１２０Ｘｅ基带能级寿命及１２１Ｃｓ和１１７Ｉ的部分能级的寿命。实验结果表明，用多普勒能移反冲距离法能测量１０－１２－１０－９ｓ范围核激发态寿命。 Doppler shift recoil distance method to measure the life of the device has been developed, the performance of the device was tested, and for the first time in the country for nuclear experiments. The 31X bombardment of the 93Nb target measured the lifetime of the 120Xe baseband level and the fractional energy levels of 121Cs and 117I. Experimental results show that the lifetime of nuclear excited states in the range of 10-12-10-9s can be measured by the Doppler shift recoil distance method.