Fig. 1. (a)Schematic diagram of gas-jet target,(b)structure of the low-energy Thomson ion spectrometer and trajectories of D ions, (c) the relationship between the energy of D ion and the deflection distance, (d) schematic diagram of Geant4 model of the spectrometer

Fig. 1. [in Chinese]

Fig. 2. [in Chinese]

Fig. 2. Current intensities of monoenergetic D ions at the positions of image plates

Fig. 3. Distributions of the signals in the electric and magnetic deflection when the air pressure of the vacuum target chamber is 1×10⁻² Pa

Fig. 4. Full widths at half maximum of the signals in the electric and magnetic deflection

Fig. 5. (a) Current intensities of D ions at the positions of image plates after considering the gas jet, (b) the distributions of the signals in the magnetic deflection before (black line) and after (red line) considering the gas jet