Jiang Wen-Li, Qi Li-Qiang, Han Da-Wei, Song Ze-Yu, Zhang Ai-Mei, Li Wei, Xu Yu-Peng, Chen Yong, Zhang Chun-Lei, Zhang Yao-Feng, Li Gang. Method and application of fast estimating particle background level for space-based focusing X-ray instrumentsJ. Acta Physica Sinica, 2020, 69(15): 150701. DOI: 10.7498/aps.69.20200576