In addition to the wall effect events, the sketch above also shows the location of the full energy peak that results from all those reactions from which both products are fully absorbed in the gas. The wall effect continuum extends from E3H (0.191 MeV) up to the full energy peak at E3H + Ep (0.764 MeV).
Besides, Figure 5 also shows that the number of the pulses counted on the near detector is larger. It occurs in particular owing to detection efficiency depends not only on detector properties but also on the details of the counting geometry like the distance from the source to the detector.
In Table 1, the count values obtained in this work using the new capabilities included in the MCNPX 2.6 are compared with the count values obtained by Serov et al. [5] using the MCNP 4A. The comparison of the results presented in both works shows that the count values obtained in this study are in good agreement with the literature.