A projectile-dependent isotope effect was found for the elastic-scattering differential cross sections in the hydrogen-isotope collision systems. All four differential cross sections lie on a common curve if they are divided by the square of the reduced mass and plotted against momentum transfer. The experimental results are in satisfactory agreement with a simple Glauber-approximation calculation.
E. P. Rille et al., "Isotope Effect and Momentum-Transfer Scaling in the Elastic-Scattering Differential Cross Sections for Hydrogen-Isotope Collision Systems," Physical Review A, vol. 28, no. 6, pp. 3642-3644, Dec 1983.
The definitive version is available at https://doi.org/10.1103/PhysRevA.28.3642
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