Electronic states of B+ produced by electron bombardment of boron trihalides: Some ion-molecule reactions of B+

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Abstract
Beam attenuation studies of B+ as a function of attenuating gas pressure show that the beam has a composition of 35% 3P and 65% 1S when produced by 70 eV electrons from BF3. As one proceeds in the series from BF3 to BI3, the amount of excited state varies in a regular manner and B+ ions are completely in the ground state when BI3 is used as a target. The composition of the beam could also be varied by varying the electron energy. The results of the attenuation studies were also confirmed by studying the cross section vs beam energy curves for the B+(1S) and B+(3P) reactions with N2O.