What unit does an ionization chamber calibrated to measure air kerma display?

An ionization chamber calibrated to measure air kerma is specifically designed to measure the kinetic energy transferred to air by ionizing radiation. The unit used for air kerma is the Gray (Gy), which quantifies the absorbed dose of radiation. One Gray is defined as the absorption of one joule of radiation energy by one kilogram of matter. It is critical for measuring the energy deposition in a medium, which is essential in various applications such as radiation therapy, radiation protection, and environmental radiation monitoring.

Other options refer to different measurements related to radiation but do not apply to air kerma. Roentgen (R) is an older unit for exposure in air, while Rem and Sievert (Sv) are measuring the biological effect of radiation in terms of dose equivalent. These units pertain to different contexts within the realm of radiation measurement and do not represent air kerma directly.