Wb. Mu et Px. Chen, Monte-Carlo calculation of X-ray dose enhancement factor nearby high Z metal connected interface, ACT PHY C E, 50(2), 2001, pp. 189-192
The dose would be enhanced on the low-Z material side when X-ray enters the
interface constructed with two different materials. The mechanism of dose
enhancement has been discussed and the Dose Enhancement Factors of W-Si,W-S
iO2,Ta-Si; and Ta-SiO2 interfaces are calculated by the Monte-Carlo method.