Comparison of measured mass attenuation coefficients with theoretical (WINXCOM) values.

Table 4: Comparison of measured mass attenuation coefficients with theoretical (WINXCOM) values.

Zinc $(p = 8.96 \frac{g}{c m^{3}})$
Source	Energy in MeV	µ in cm⁻¹		XCOM in
¹³⁷Cs	0.662	0.6147	0.0686	0.0714
²²Na	0.511	0.7249	0.08067	0.08072
²²Na	1.274	0.4789	0.05907	0.05179