N. Selberg et al., SLOW COLLISIONS BETWEEN HIGHLY-CHARGED IONS AND C-60 - ABSOLUTE DELTA-E VALUES AND CROSS-SECTIONS, Physical review. A, 53(2), 1996, pp. 874-879
We present energy-gain distributions for net one- and two-electron tra
nsfer in slow Ar-q+-C-60 collisions. The Delta E-spectra for the forme
r peak at Delta E(1) = 12.9 +/- 0.4 (nl = 7s and 7p), 15.5 +/- 1.0 (n
= 10), 15.1 +/- 0.5 (n = 11), and 13.8 +/- 0.4 eV (n = 12) for q = 8,
13, 14, and 15, respectively. The total reaction cross sections are si
gma(tot) = 4.6 +/- 1.4 (q = 8), 10.1 +/- 2.8 (q = 13), 7.1 +/- 2.0 (q
= 14), and 10.0 +/- 3.1 (q = 15) in units of 10(-14) cm(2). These resu
lts are discussed within a simple qualitative model in which the trans
ient localization of the positive charge on the C-60(+) ion just after
transfer of one electron is a free parameter.