Table 1.

Absorption in YBa₂Cu₃O₇ (molecular weight: 666.5)

Elements	Atomic wt.	X-Ray (λ = 1.546) Å		Neutron (λ = 1.08) Å
		µ/ρa	µ/ργb	µ/ρa	µ/ργ
Y	88.9 × 1	134	17.9	0.006	0.001
2Ba	137.4 × 2	330	136.1	0.003	0.001
3Cu	63.6 × 3	52.9	15.2	0.002	0.001
7O	16.0 × 7	11.5	1.9	0.000	0.000
Σ	666.5		171.0		0.003

^acm² g⁻¹ [23]

^bγ is the mass fraction of the corresponding chemical element.