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Table 5: Req for rectangle field sizes, E=15 MeV and σ2 =1.3 (radian2 cm2). 2a and 2b (cm) are the sides of rectangle

Table 5: R<sub>eq</sub> for rectangle field sizes, E=15 MeV and</b> σ<sup>2</sup> =1.3 (radian<sup>2</sup> cm<sup>2</sup>). 2a and 2b (cm) are the sides of rectangle