Table 4.4.2.3

International
Tables for
Crystallography
Volume C
Mathematical, physical and chemical tables
Edited by E. Prince

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International Tables for Crystallography (2006). Vol. C. ch. 4.4, p. 439

I. S. Anderson^a and O. Schärpf^f

Table 4.4.2.3 | top | pdf |
Characteristics of some typical elements and isotopes used as neutron filters

Element or isotope	Resonance (eV)	σ_s (resonance) (barns)	λ (Å)	σ_s(λ) (barns)	$[\displaystyle{\sigma _{s}( \lambda /2) }\over {\sigma _{s}( \lambda) }]$
In	1.45	30000	0.48	94	319
Rh	1.27	4500	0.51	76	59.2
Hf	1.10	5000	0.55	58	86.2
²⁴⁰Pu	1.06	115000	9.55	145	793
Ir	0.66	4950	0.70	183	27.0
²²⁹Th	0.61	6200	0.73	< 100	$[\gt]$ 62.0
Er	0.58	1500	0.75	127	11.8
Er	0.46	2300	0.84	125	18.4
Eu	0.46	10100	0.84	1050	9.6
²³¹Pa	0.39	4900	0.92	116	42.2
²³⁹Pu	0.29	5200	1.06	700	7.4

1 barn = 10⁻²⁸ m².