Tuning the Refractive Index and Optical Band Gap of Silk Fibroin Films by Electron Irradiation

Table 1

Specifications of the electron beam accelerator and irradiation conditions.

(1) Beam energy	8 MeV
(2) Beam current	20 mA
(3) Pulse repetition rate	50 Hz
(4) Pulse width	2.2 μs
(5) Distance source to sample	30 cm
(6) Dose range	0–150 kGy
(7) Atmosphere	Air
(8) Temperature	24°C