Cross sections for the process H+ + H H+ + H* (n=2) are determined from the energy-loss spectra of 15-200-keV protons. After normalization at 200 keV to the Born approximation, the maximum value (1.07 x 10-16 cm2 at 60 keV) lies below close-coupling calculations and above Glauber-approximation calculations. The agreement with low-energy (5-30-keV) data of others is very good. © 1975 The American Physical Society.
J. T. Park et al., "Excitation Of Atomic Hydrogen To The N=2 States By 15-200-keV Protons," Physical Review Letters, vol. 34, no. 20, pp. 1253 - 1256, American Physical Society, Jan 1975.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.34.1253
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01 Jan 1975