International
Tables for
Crystallography
Volume B
Reciprocal space
Edited by U. Shmueli

International Tables for Crystallography (2010). Vol. B, ch. 2.5, p. 301   | 1 | 2 |

Figure 2.5.2.1 

J. M. Cowleya
[Figure 2.5.2.1]
Figure 2.5.2.1

The variation with accelerating voltage of electrons of (a) the wavelength, λ and (b) the quantity [\lambda [1 + (h^{2} / m_{0}^{2} c^{2} \lambda^{2})] = \lambda_{\rm c} / \beta] which is proportional to the interaction constant σ [equation (2.5.2.14)[link]]. The limit is the Compton wavelength [\lambda_{\rm c}] (after Fujiwara, 1961[link]).