Collisional quenching of theA 2∑+(v′=2)HF+ state by He atomsstate by He atoms

Results of an experimental study of the process of quenching of excited states ofHF ⁺ ions in a hydrofluoride-helium electron-beam plasma are reported. The rate constant of quenching ofA ²∑⁺(v′=2)HF⁺ by helium atoms is measured. The ions were excited by activation of the rarefied gas mixture by an electron beam. Diagnostics of internal states of the ions was performed using the electron-vibration-rotation spectrum of their spontaneous emission. Novosibirsk State University, Novosibirsk 630090. Translated from Prikladnay Makhanika i Tekhnicheskaya Fizika, Vol. 39, No. 6, pp. 16–20, November–December, 1998