Design and fabrication of a Nano-based neutron shield for fast neutrons from medical linear accelerators in radiation therapy

Table 2 Transmission factor comparison for double-layer nanoshields for Am-Be source and linac spectra simulation (Uncertainties < 0.01)

Nano Material Concentration	Samples thickness (cm)	Am-Be Spectrum (I/I₀)	Linac Spectrum (I/I₀)
Net silicone	1	0.91	0.87
	2	0.82	0.76
	3	0.74	0.67
	4	0.67	0.59
10% Wt. nano material, 90%Wt. silicone	1	0.88	0.85
	2	0.77	0.73
	3	0.68	0.62
	4	0.59	0.54
20% Wt. nano material, 80%Wt. silicone	1	0.86	0.84
	2	0.76	0.71
	3	0.65	0.60
	4	0.56	0.51
30% Wt. nano material, 70%Wt. silicone	1	0.84	0.83
	2	0.73	0.67
	3	0.61	0.55
	4	0.50	0.46
40% Wt. nano material, 60%Wt. silicone	1	0.83	0.80
	2	0.70	0.63
	3	0.58	0.52
	4	0.45	0.43
50% Wt. nano material, 50%Wt. silicone	1	0.81	0.77
	2	0.67	0.60
	3	0.55	0.49
	4	0.44	0.37

ISSN: 1748-717X