Improving radiochromic film's sensitivity by wrapping it with UV phosphor.
The main advantage of radiochromic-film dosimeters is the coupling of rapid full planar-acquisition, high-spatial resolution and dose linearity. Their main limitation, however, is their low radiation sensitivity. This precludes their application to measuring doses below a few Gy. Radiochromic films are sensitive to ultraviolet radiation. In this note the results of exposing radiochromic films to x rays through an UV imaging cassette, which converts and amplifies x rays to UV radiation, are presented. These results indicate a clear increase (around 50%) in radiochromic film's sensitivity to MV x rays (6, 10, and 18 MV) when exposed through the UV phosphor.
Geso
Moshi
M
School of Medical Sciences, RMIT University, Bundoora Campus, Bundoora, Victoria 3083, Australia.
Ackerly
Trevor
T
Patterson
William
W
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005373:Film Dosimetry / Q000295:instrumentation* / Q000379:methods*; D011829:Radiation Dosage; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013635:Tantalum / Q000528:radiation effects*; D014466:Ultraviolet Rays; D014965:X-Rays; D015019:Yttrium / Q000528:radiation effects*
C052216:yttrium tantalate; D015019:Yttrium; D013635:Tantalum