A. Jakob et al., Time resolving diagnostic of the compensation process of pulsed ion beams at high-intensity light ion source, REV SCI INS, 71(2), 2000, pp. 1107-1109
Time-resolved measurements of the compensation process have been performed
at the (high-intensity light ion source)-low-energy beam transport test sta
nd (CEA-Saclay) using an 92 kV; 73 mA proton beam. A residual gas ion energ
y analyzer was used to measure the potential distribution as a function of
time. To measure the radial density profile of the ion beam a charge couple
d device camera has been used to perform time-resolved measurements and to
estimate the rise time of compensation. Both measurements in combination al
low an investigation of the space-charge compensation process due to the re
sidual gas ionization and the experimental study of the rise of compensatio
n. A numerical simulation of selfconsistent equilibrium states [J. Pozimski
, Il Nuovo Cimento 106, A.N.11 (1993)] of the ion beam has been used to det
ermine plasma parameters such as the density and the temperature of the ele
ctrons from the measured data. An interpretation of the acquired data and t
he achieved results is given. (C) 2000 American Institute of Physics. [S003
4-6748(00)54102-1].