Variance-covariance measurements of the dose mean lineal energy in a neutron beam

In the variance-covariance technique, the dose mean lineal energy is determined from observations of the specific energies from two independent detectors operating in phase during a series of measurements. This technique, unlike the variance technique, is applicable to time varying radiation beams. Our experiment used two uncoupled microdosimetric detectors mounted within the same enclosure and designed to be used as either ionization chambers or proportional counters. 8 refs., 4 figs., 2 tabs