HIFRL首次在束γ实验

First In-beam γ Spectroscopic Experiment at HIRFL

在兰州重离子加速器（ＨＩＲＦＬ）上调试完成了一套在束γ核结构研究装置：ＳＦＣ（ＥＣＲ源）＋直通管道（限束狭缝）＋在束γ终端，并进行了首次在束γ实验，各项在束实验的指标，特别是中子、γ本底达到了较为理想的水平。对￣（１６）Ｏ轰击￣（１９７）Ａｕ反应进行了在束γ测量，包括γ单谱、γ激发函数、γ角分布和γ－γ－ｔ符合，在一些测量中，采用了独特的技术。

The in- beam γ expedmental setup of HIRFL, which includes SFC(ECR ion source), direct-link-pipe(limit jaws) and in-beam γmeasurement system, was adjusted and tested with its first in-beam γ experiment. All performances, such as neutron and γ backgrounds of the setup have reached to an ideal level. With some special γ-ray spectroscopic techniques, the in=beam γ experiment , including γ single spectrtum. γ excitation funcdon, γ angular distdbudon and γ -γ -t coincidence measurements, was perfomned using reacdon 16O (197Au, xn).