Table 7.3.3.2

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. 7.3, p. 646

P. Convert^a and P. Chieux^a

^a Institut Laue–Langevin, Avenue des Martyrs, BP 156X, F-38042 Grenoble CEDEX, France

Table 7.3.3.2 | top | pdf |
A few examples of gas-detector characteristics

Detection gas	Additional gas	Gas pressure (atm)	Useful detection volume (mm × mm)	Mounting	Capture efficiency
Detection gas	Additional gas	Gas pressure (atm)	Useful detection volume (mm × mm)	Mounting	λ = 1 Å	λ = 2 Å
¹⁰BF₃		1	L = 200, Ø = 50	Axial	65.5%	88.1%
¹⁰BF₃		1	L = 200, Ø = 50	Radial^†	23.4%	41.3%
³He		5	L = 100, Ø = 50	Axial	97.5%	99.9%
³He		5	L = 100, Ø = 50	Radial^†	84.4%	97.5%
³He		8	L = 250, Ø = 10	Radial^†	44.7%	69.5%
³He (monitor)	C₃H₈	2	100 × 40 × 40		10⁻⁵ to 10⁻³

^†Value calculated for the diameter.