Abstract

Modern radiation therapy (RT) technologies and the needs of molecular and micro radiobiology have necessitated the detection of radiation absorbed by micro/nano volumes. The possibility of developing a nano/micro-scale dosimeter is demonstrated via the use of prethreshold photoelectron and exoelectron emission from solid-state nanolayers (Si, bone) and nanofilms (ZrO2:PbS). The experiments indicate that the absorbed dose threshold depends on the detector origin. • Molecular radiobiology requires radiation detection in micro/nano volumes. • The escape length of weak electrons (several eV) of solids is at the nanometer scale. • Therefore, a solid-state dosimeter at the nanoscale could be developed. • Photo and exoelectron emissions (P-EE) have demonstrated dose detection in nanovolumes. • Nanolayers (Si, bone) and nanofilms (ZrO2:PbS) can be used for P-EE-based dosimeters.

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