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

International Tables for Crystallography (2006). Vol. C. ch. 4.2, p. 212

Section 4.2.2.14. Connection with scales used in previous literature

R. D. Deslattes,c E. G. Kessler Jr,f P. Indelicatoe and E. Lindrothg

4.2.2.14. Connection with scales used in previous literature

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In order to compare historical data for X-ray spectra with the results in the present tabulation, certain conversion factors are needed. As discussed in the introduction, the principal units found in the literature are the xu and the Å* unit. There is the additional complication that there were several different definitions in use at various times and at the same time in different laboratories. For the convenience of the reader, we summarize in Table 4.2.2.6[link] the main conversion factors needed. The numerical values for the wavelengths in Å can be converted to energies in electron volts by using the conversion factor 12398.41857 (49) eV Å (Mohr & Taylor, 2000[link]).

Table 4.2.2.6| top | pdf |
Wavelength conversion factors

Numbers in parentheses are standard uncertainties in the least-significant figures.

 Cu Kα1Mo Kα1W Kα1
λ (Å)1.54059292(45)0.70931713(41)0.20901313(18)
λ (Å*)1.540562(3)0.709300(1)0.2090100
l kxu1.5374000.707831 
Å*/Å1.0000201(20)1.0000242(22)1.00001498(86)
kxu/Å1.00207683(29)1.00209955(58) 

References

First citation Mohr, P. J. & Taylor, B. N. (2000). CODATA recommended values of the fundamental physical constants: 1998. Rev. Mod. Phys. 72, 351–495.Google Scholar








































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