MCNP-X Monte Carlo Code Application for Mass Attenuation Coefficients of Concrete at Different Energies by Modeling 3 × 3 Inch NaI(Tl) Detector and Comparison with XCOM and Monte Carlo Data

Table 1

Total efficiency values for 3 × 3 inch NaI(Tl) detector with a point source located = 0.001 cm away from the front surface of the detector.

Energy (keV)	Total efficiency ( = 0,001 cm)
	Present work	Yalcin et al. [11]	Vegors Jr. et al. [4]	Nakamura [12]	Miller and Snow [5]	MCNP-X error rate
661	0.3618	0.3646	0.362	0.367	0.370	0.0015
1332	0.3011	0.2930	0.293	0.296	0.302	0.0016
2620	0.2491	0.2476	0.248	0.249	0.250	0.0019