Abstract: A Home Mass Spectrometer for Special Use in the Isotopic Analysis of Uranium HaxafluorideTang Hansen; Zhou Qingping (Jiangsu Institute of Petrochemical Technology,Changzhou 213016, China)Yan Dingli; Ren Da; Hao Xueyuan (P. O. Box 151, Lanzhou, China)Abstract:This paper introduces a 40cm and 90° deflection angle first - order focusing mass spectrometer, which is designed and built in our laboratory for special use in the isotopic analysis of uranium haxafluoride. The resolution of the mass spectrometer is better than 500, its memory factor is 0. 8%, and its function achievesUF mass spectrometer standard. The mass spectrometer works well in conventional analysis at all times.Keywords: isotope, mass spectrometer, manufacture