Gj. Ferland et al., CHARGE-TRANSFER BETWEEN NEUTRAL ATOMS AND HIGHLY IONIZED SPECIES - IMPLICATIONS FOR ISO OBSERVATIONS, The Astrophysical journal, 481(2), 1997, pp. 115-117
We estimate rate coefficients for charge transfer between neutral hydr
ogen and helium and moderately to highly ionized heavy elements. Altho
ugh charge transfer does not have much influence on hot collisionally
ionized plasmas, its effects on photoionized plasmas can be profound.
We present several photoionization models that illustrate the signific
ant effect of charge transfer on the far-infrared lines detected by IS
O.