Pencil Beam Spectral Measurements of Ce, Ho, Yb, and Ba Powders for Potential Use in Medical Applications

Table 1

Areal density ranges of the used substances and the corresponding elements.

Substance	Substance areal density	Element areal density	Element density	Element thickness	Value layers
	(g/cm^2)	(g/cm^2)	(g/cm^3)	(μm)
BaCl2(H2O)2	0.6224–1.5561	0.3500–0.8750	3.500	1000–2500	162–793
CeO2	0.0818–2.0443	0.0665–1.6643	6.657	100–2500	67–238
Ho2O3	0.5037–1.5112	0.4398–1.3193	8.795	500–1500	75–399
Yb2O3	0.3832–1.1495	0.3365–1.0095	6.730	500–1500	76–178