Dielectronic recombination cross section for Boron III

The dielectronic recombination cross section has been estimated for the B/sup 2 +/ target and projectile electron energies in the range 0.1approx.0.5 Ry, corresponding to the 2s..-->..2p (..delta..n = 0) excitation accompanied by capture of the continuum electron into a high Rydberg state (nl ). Contributions from n< or approx. =400 and l< or approx. =15 are estimated with the use of an improved theoretical procedure. For a typical electron energy resolution of 2.0 eV, the cross section with n< or approx. =20 is 1.6 x 10/sup -19/ cm/sup 2/.