Research and development of windowless solid hydrogen target for nuclear physics experiments

采用新方法研制了固体氢核实验靶材。首先，我们开发了大尺寸固体氢靶，D=50mm， L=30mm/100mm的薄膜。这些目标被用于理研的两次核实验。其次，在30μm厚度的纯银箔上，利用真空吹制氢气，制备了薄的无窗固体氢靶。目标尺寸为厚度0.35mm，直径5mm。从2011年起，这个固体氢目标将用于在TRIUMF（加拿大温哥华）进行核实验。

We have developed solid hydrogen targets for nuclear experiments, using newly developed method. First, we have developed large-size solid hydrogen targets, D=50mm, L=30mm/100mm in thin films. These targets were used for two nuclear experiments at RIKEN. Second, we have developed a thin windowless solid hydrogen target by hydrogen gas blowing in vacuum on pure silver foil with 30μm thickness. The target size was 0.35mm in thickness and 5mm in diameter. This solid hydrogen target will be used for nuclear experiments at TRIUMF (Vancouver, Canada) from 2011.