Calculation of total cross sections and effective emission coefficients for B5 + collisions with ground-state and excited hydrogen

F Guzmán (1) , L F Errea (2) , Clara Illescas (2) , L Méndez (2) , B Pons (3)

1 Department of Physics
2 Departamento de Química
3 CEA

Classical and semiclassical calculations of nl-resolved charge exchange cross sections in B 5+ collisions with H(n i) are performed to compute effective emission coefficients for the n = 7 → n = 6 transition in B 4+ for plasma conditions typical of the ASDEX-U tokamak. For n i = 1, the value of the emission coefficient is larger than that obtained from ADAS database by a factor of two at energies of 10 keV/amu, but no differences are found at energies above 50 keV/amu. For n i = 2, our calculation yields emission coefficients close to those derived from ADAS data from low to high impact energies. The emission coefficients corresponding to B 5+ + H(n i = 3) collisions are of the same order of magnitude than those for n i = 2.

Mots clés: Physical Sciences

F Guzmán, L F Errea, Clara Illescas, L Méndez, B Pons. Calculation of total cross sections and effective emission coefficients for B5 + collisions with ground-state and excited hydrogen. Journal of Physics B: Atomic, Molecular and Optical Physics, 2010, 43 (14), pp.144007. ⟨10.1088/0953-4075/43/14/144007⟩. ⟨hal-00597860⟩