Characteristics of ion beam and anode plasma in "Point Pinch Diode"

Diagnostics and evaluation have been carried out on an ion beam and anode plasma in “Point Pinch Diode”. Mass spectra of ion beam measured by Thomson-parabola spectrometer have shown that the main component are (a) proton and H2⁺, (b) highly ionized carbon and oxygen ions, and (C) singly ionized C, 0 and molecules such as CO2⁺, OH⁺, OH2⁺. X-ray and particle pinhole images have shown the size of the electron beam on the plasma to be less than ∼ 0.5 mm in diameter, in which fine structures are found with size less than 0.05 mm. A Ka satelite line of Al V is observed with crystal spectrograph, which indicates the existence of Al⁴⁺ in the plasma.