https://www.nist.gov/publications/ohms-law-low-current-calibration-system-ionization-chambers
A system for the calibration of electrometers that measure currents from ionization chambers is described.
ohms lawionization chamberslowcurrentcalibration
https://www.nist.gov/publications/performance-electret-ionization-chambers-magnetic-field
Electret Ionization Chambers (EIC) are widely used for measuring radon and radiation. The radiation measured includes alpha, beta and gamma radiation.
ionization chambersmagnetic fieldperformanceelectretnist