Vol. 3, issue 08, article # 8

pdf Losev L. L., Soskov V. I. Nonlinear photoionization of air in the spectral interval 355-200 nm. // Atmospheric and oceanic optics. 1990. V. 3. No. 08. P. 772-776.
Copy the reference to clipboard

The nonlinear photoionization of air was investigated with the help of a UV laser, discretely tunable in the range 355-200nm. It was found that two-step ionization of nitrogen and oxygen occurs at wavelengths in the range 355-200nm while two-photon ionization of oxygen occurs at wavelengths λ<205 nm. It is shown that in the case of the two-step process the cross section for photoionization decreases as the gas pressure increases.


1. L.L. Losev and V.I. Soskov, Kvant. Elektron, 16, No. 1, 73 (1989).
2. R.L. Carman, M.E. Mack, F. Shimizu, et al., Phys. Rev. Lett. 23, No. 23, 1327 (1969).
3. I.B. Delone and M.F. Fyodorov, Tr. Fiz. Inst., Akad. Nauk SSSR 115, 42 (1980).
4. C. Batler and P. Charmon Introduction to Atmospheric Chemistry [Russian translation] (Mir, Moscow, 1977).
5. G. Herzberg, Atomic Spectra and Atomic Structure, Pover Press, No. 4 (1944), [Russian translation] (Inostrannaya Literatura, Moscow, 1948).
6. G. Herzberg, Spectra and Structure of Diatomic Molecules, van Nostvand, No. 4 (1950), [Russian translation] (Inostrannaya Literatura, Moscow, 1948).
7. Yu.V. Anishchenko, Pis’ma Zh. Eksp. Teor. Fiz. 15, No. 7, 64 (1989).
8. A.W. Cown, M.N. Ecliger, and J.G. Eden, Phys. Rev. A. 26, No. 6, 318 (1982).
9. B.M. Smirnov, Excited Atoms (Energoizdat, Moscow, 1982).