Spectra Induced byH+Impact onO2

Abstract

Spectra induced by 5- to 130-keV ${\mathrm{H}}^{+}$ impact on ${\mathrm{O}}_2$ have been observed in the visible region. Principal features are ${\mathrm{O}}_2^{+}$, ${\mathrm{O}}^{+}$, and hydrogen Balmer emissions. Absolute cross sections have been determined for excitation of the (0,0), (0,1), (1,0), (2,0), (3,1), and (2,1) bands of the $b{}_{}{}^4{}_{}{}^{}\Sigma -a{}_{}{}^4{}_{}{}^{}\Pi$ first negative system of ${\mathrm{O}}_2^{+}$. Cross sections for populating the $v=0, 1, 2, \mathrm{and} 3$ levels of the $b{}_{}{}^4{}_{}{}^{}\Sigma$ state of ${\mathrm{O}}_2^{+}$ have been estimated. Cross sections for exciting some ${\mathrm{O}}_{\mathrm{II}}$ lines have also been determined.