Optical properties of low background PEN structural components for the Legend-200 experiment

Abstract Polyethylene Naphthalate (PEN) plastic scintillator has been identified as potential self-vetoing structural material in low-background physics experiments. Radio-pure scintillating components have produced from PEN using injection compression molding technology. These will be used optically active holders to mount the Germanium detectors Legend -200 neutrinoless double beta decay experiment. In this paper, we present measurement of optical properties these components. The scintillation light emission spectrum, time constant, attenuation and bulk absorption length well output yield are reported. addition, surface characterized an estimation roughness is presented. final detector measured measurements were estimate efficiency holders.