Differential cross sections for electron capture from atomic hydrogen by fast alpha particles

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Abstract
Electron capture in collisions of fast alpha particles with atomic hydrogen is studied by means of the prior version of the three-body boundary-corrected intermediatestates method (BCIS-3B). State-selective and state-summed differential cross sections are presented for the final state n up to nmax = {2,3,4}, depending on the incident energy. The contributions from higher excited states with n > nmax are included using the Oppenheimer n?3 scaling law. The observed angular dependencies of the obtained differential cross sections are analyzed in detail, for incident projectile energy values of E = {100, 150, 300} keV/amu (intermediate) and E = {1.3, 2.5, 5.0, 7.5, 12.5} MeV/amu (high energy values).
Funding Information
  • Ministry of Education, Science and Technological Development of the Republic of Serbia (451-03-65/2024-03/200124)

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