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Measurements of Thermal Dissociation of Hydrogen, Using Fast Protons
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11.See, for example, E. N. Fuls, P. R. Jones, F. P. Ziemba, and E. Everhart, Phys. Rev. 107, 704 (1957), where detailed calculations of scattering geometry are to be found.
12.Electron screening can be neglected when the impact parameter corresponding to the particular incident energy and scattering angle is small compared to the Bohr radius. An elementary calculation using Rutherford scattering formula shows that this condition is amply satisfied for 23‐keV scattering at 3° in the present case. Neglecting electron screening in this way simplifies the present discussion, although such simplification is not necessary. The present procedure can also be applied to determine the density of other gases where electron screening must be taken into account.
13.A factor is included with the usual formula from kinetic theory to allow for dissociation in the furnace.
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