A Monte Carlo Study of the Photon Spectrum due to the Different Materials Used in the Construction of Flattening Filters of LINAC

Table 1

Materials used for the construction of flattening filters in linear accelerators.

Element	Z	A	%	[g⋅cm^−3]	References
Al	13	27	100	2.698	(i) Podgorsak et al. (1974)
					(ii) Waggener et al. (1999)
Fe	26	56	100	7.874	(i) Mao et al. (1997)
					(ii) Iwasaki et al. (2003)
Cu	29	64	100	8.96	(i) Waggener et al. (1999)
					(ii) Iwasaki et al. (2003)
Ta	73	181	100	16.654	(i) Martínez-Ovalle et al. (2011)
W	74	184	100	19.3	(i) Iwasaki et al. (2003)
					(ii) Martínez-Ovalle et al. (2011)
Pb	82	208	100	11.4	(i) Podgorsak et al. (1974)
					(ii) Van Laere and Mondelaers (1997)
					(iii) Iwasaki et al. (2003)
SST (Cr/Fe/Ni)			18/74/8	8.03	(i) Martínez-Ovalle et al. (2011)
					(ii) González et al. (2009)
Ta + Fe			100/100	16.654/7.874	(i) Martínez-Ovalle et al. (2011)
					(ii) Mao et al. (1997)