Abstract
Using the crossed-beam method and a hypocycloidal electron spectrometer, the energy dependence of the ionization cross section for the cadmium atom has been studied in the near-threshold region and the elastic scattering of slow electrons at an angle close to 180° by Cd+ ions was studied for the first time. Within the region under study (0–7 eV above the first atomic ionization potential), a resonance structure determined by the contribution of atomic autoionization states is revealed in both the ionization curve and differential cross section of elastic scattering. The structure in the measured curves has been analyzed with the use of data on the ejected-electron spectra obtained under the excitation of autoionization states of Cd atoms, as well as the data on the optical excitation functions for the atomic spectral lines at λ=430.7 nm (51 P 1-81 S 0), 515.5 nm (51 P 1-71 S 0), 298.0 nm (53 P 2-63 D j ), and 361.0 nm (53 P 2-53 D j ).
Similar content being viewed by others
References
O. B. Shpenik, I. P. Zapesochnyi, V. V. Sovter, et al., Zh. Éksp. Teor. Fiz. 65, 1797 (1973) [Sov. Phys. JETP 38, 898 (1974)].
P. D. Burrow, J. A. Michejda, and J. Comer, J. Phys. B 9, 3225 (1976).
A. Hashizume and N. Wasada, J. Phys. B 13, 4865 (1980).
L. P. Presnyakov, V. P. Shevel’ko, and R. K. Yanev, Elementary Processes with the Participation of Multiply Charged Ions (Énergoatomizdat, Moscow, 1986).
Physics of Ion-Ion and Electron-Ion Collisions, Ed. by F. Brouillard and J. McGowan (Plenum, New York, 1983; Mir, Moscow, 1986).
V. I. Lendel, V. T. Navrotskii, and E. P. Sabad, Theory of Resonance Phenomena in Electron-Atom Collisions (Naukova Dumka, Kiev, 1988).
I. D. Williams, Rep. Prog. Phys. 62, 1431 (1999).
J. B. Greenwood, I. D. Williams, and P. McGuinness, Phys. Rev. Lett. 75, 1062 (1995).
B. Srigengan, I. D. Williams, and W. R. Newell, J. Phys. B 29, L605 (1996).
G. F. Drukarev, Collisions of Electrons with Atoms and Molecules (Nauka, Moscow, 1978; Plenum, New York, 1987).
N. I. Romanyuk, O. B. Shpenik, I. A. Mandi, et al., Zh. Tekh. Fiz. 63(7), 138 (1993) [Tech. Phys. 38, 599 (1993)].
E. É. Kontrosh, I. V. Chernyshova, L. Sovter, and O. B. Shpenik, Opt. Spektrosk. 90, 394 (2001) [Opt. Spectrosc. 90, 339 (2001)].
F. P. Lossing, R. H. Emmel, B. G. Giessner, and G. G. Meisels, J. Chem. Phys. 54, 5431 (1971).
W. M. Hickam, Phys. Rev. 95, 703 (1954).
J. B. Hasted, Physics of Atomic Collisions (Butterworths, London, 1964; Mir, Moscow, 1965).
P. Marmet and M. Proulx, J. Phys. B 23, 549 (1990).
M. W. D. Mansfield, Proc. R. Soc. London, Ser. A 362, 129 (1978).
V. Pejcev, D. Rassi, and K. J. Ross, J. Phys. B 10, L629 (1977).
S. M. Kazakov, A. I. Korotkov, and O. B. Shpenik, Pis’ma Zh. Tekh. Fiz. 6, 421 (1980) [Sov. Tech. Phys. Lett. 6, 181 (1980)].
M. W. D. Mansfield and M. M. Murnane, J. Phys. B 18, 4223 (1985).
C. E. Moore, Atomic Energy Levels (National Bureau of Standards, Washington, 1952), Circular of the National Bureau of Standards, No. 467, Vol. 2.
V. Pejcev, K. J. Ross, D. Rassi, and T. W. Ottley, J. Phys. B 10, 459 (1977).
G. V. Marr and J. M. Austin, Proc. R. Soc. London, Ser. A 310, 137 (1969).
M. Wilson, J. Phys. B 1, 736 (1968).
N. L. S. Martin, R. P. Bauman, and M. Wilson, Phys. Rev. A 57, 1827 (1998).
Author information
Authors and Affiliations
Additional information
__________
Translated from Optika i Spektroskopiya, Vol. 92, No. 5, 2002, pp. 738–747.
Original Russian Text Copyright © 2002 by Kontros, Chernyshova, Shpenik.
Rights and permissions
About this article
Cite this article
Kontros, J.E., Chernyshova, I.V. & Shpenik, O.B. Resonances at collisions of slow electrons with cadmium atoms and ions. Opt. Spectrosc. 92, 676–684 (2002). https://doi.org/10.1134/1.1481130
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.1481130