Estimation of ballistic deficits for ionization chamber pulses in pulse shaping amplifiers

In order to understand the dependence of the ballistic deficit on the shape of rising portion of the voltage pulse at the input of pulse shaping amplifier, we have estimated the ballistic deficits for the pulses from a two-electrode parallel plate ionization chamber as well as for the pulses from a gridded parallel plate ionization chamber. These estimations have been made for CR-RCⁿ (n = 1-6) shaping network as well as for the complex shaping network of ORTEC model 472 spectroscopic amplifier using numerical integration method. We have also made simulations to see the effect of ballistic deficit on the pulse height spectra.