State selective electron capture in He+ +H2 collisions at intermediate energies

M. ALESSI; N. D. CARIATORE; P. FOCKE; S. OTRANTO

PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS

AMER PHYSICAL SOC

Lugar: New York; Año: 2012 vol. 85 p. 427041 - 4270412

1050-2947

State-selective single electron capture in collisions of He+ with H2 molecules is investigated using the coldtarget recoil-ion momentum spectroscopy technique. The energy range considered is 6.25 keV/amu (projectile velocity vp = 0.5 a.u.) to 50 keV/amu (vp = 1.41 a.u.). In addition, we explore the transverse recoil momentum distributions that provide direct access to the angular scattering of the receding projectile.The present experimental data are contrasted to the theoretical results obtained by means of the classical trajectory Monte Carlo model with which we find good overall agreement in the energy range explored.