前端Al壳厚度(cm)

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

MCNP结果

0.005086

0.004963

0.004846

0.004724

0.004612

0.0045

0.00439

0.004287

G4结果

0.005094

0.00495

0.004846

0.004734

0.004618

0.004505

0.004398

0.004294

误差

−0.15%

0.26%

0.00%

−0.22%

−0.14%

−0.10%

−0.16%

−0.16%