Soviet Journal of Quantum Electronics

Laser-induced atomic-molecular reaction between atoms of the rare-earth metals ytterbium and europium and HCI molecules

Nikolai V. Karlov, B. B. Krynetskiǐ, В. А. Мишин, A M Prokhorov, O. M. Stelmakh

Published Mar 31, 1981• 0 citations

Abstract

Chemical reactions between ytterbium and europium atoms and HCI molecules were recorded in crossed atomic and molecular beams when the atoms were excited by laser radiation. When the 3P0 and 3P2 metastable states of ytterbium were excited, the quantity of reaction products was three times that when the 3P1 state was excited.

DOI: 10.1070/qe1981v011n03abeh006397

Related papers

LASER INDUCED ATOMIC-MOLECULAR REACTION OF THE RAREEARTH YTTERBIUM AND EUROPIUM METALS WITH HCI MOLECULES.

Nikolai V. Karlov, B. B. Krynetskiǐ, В. А. Мишин +2 more

In the Crossed atomic and molecular beams the chemical reactions of ytterbium and europium atoms with HCI molecules were observed at the laser excitation of atoms. At the excitation of ytterbium metastable states 3po and 3P2 an indicated amount of the reaction product was increased by a factor of three as compared to the case of 3P1 state excitation.

Conference on Lasers and Electro-OpticsJan 1, 19810 citations

Laser induced atomic-molecular reaction of the rare-earth ytterbium and europium metals with HCl molecules

Nikolai V. Karlov, B. B. Krynetskiǐ, В. А. Мишин +2 more

In the crossed atomic and molecular beams the chemical reactions of ytterbium and europium atoms with HCl molecules were observed at the laser excitation of atoms. At the excitation of ytterbium metastable states3P0and3P2an indicated amount of the reaction product was increased by a factor of three as compared to the case of3P1state excitation.

IEEE Journal of Quantum ElectronicsDec 1, 19810 citations

Collisions and half-collisions with lasers

N. K. Rahman, Carla Guidotti

Merging two subfields, collisions and spectroscopy, this book presents the latest research proposals, innovative experiments and fresh ideas. Topics considered include radiative collision induced electron continuum-continuum scattering; models of laser-induced chemical reactions; experimental studies of laser-induced ionizing collisions; laser photodissociation of Na/sub 2/ + ions produced by laser resonant ionization of Na vapor; steady-state electron-atom collision in a laser field; conditions for the observation of the predicted splitting of the laser assisted electron impact of the differential cross section of atoms; transitions between resonances; some proposals for experiments; above-threshold multiphoton ionization; observability of optical collisions in the frequency and the time domain; laser switched collisions - a diagrammatical approach; polarization of atomic fluorescence excited by molecular photodissociation; multiphoton selective excitation; on the role of chaotic dynamics with many basins of attraction; predissociation in a strong electromagnetic field; theory of double resonance; and coherent excitation of polyatomic molecules up to highly excited vibrational states by laser light.

Jan 1, 198442 citations

Laser-induced radiative collisions (review)

Sergei I Yakovlenko

A theory is given of radiative collisions, i.e., of elementary events in which the emission of a photon occurs in the course of a collision. Special attention is paid to radiative collisions stimulated by a laser field. Simple but clear approaches formulated in the forties or fifties are described briefly. This theory applies, in particular, to collisions in a strong electromagnetic field which affect the collision dynamics. Chemical radiative collisions, i.e., chemical reactions stimulated by photons absorbed in the course of a collision, are reviewed. An analysis is made of several recent experiments in which the theoretically predicted effects were observed: these include the radiative-collisional transfer of excitation from atom to atom, nonlinear effects due to the influence of the field on the collision dynamics, and photosubstitution of one of the atoms in a halogen molecule with an inert gas atom.

Soviet Journal of Quantum ElectronicsFeb 28, 197859 citations

Laser cooling of rare gases in metastable states

Fujio Shimizu, Kazuko Shimizu, Hiroshi Takuma

We report in this talk the first demonstration of the laser cooling of a metastatic atomic bean, and the transfer of cooled atoms between two different metastatic states. The laser cooling and trapping of neutral atoms have been demonstrated only on alkali atoms. It is of great interest to extend this technique to other atomic species. The standard cooling scheme for those atoms uses the ground state as the lower energy level of the cooling transition. The cooling transtion must have a sizable transition moment and its wavelength must be in the region where a continuous laser is available. Such an excited level can generally be found in alkali, alkali earths. For many transition and rare-earth metals, an adequate excited level can be found only in relatively high excited states.

Jul 18, 19880 citations

Observation of Light-Induced Collisional Energy Transfer

Ph. Cahuzac, P. E. Toschek

We have observed light-induced energy transfer in collisions of Eu atoms in three excited levels with Sr ground-state atoms and compared its spectra with the results of calculations. A four-photon parametric process in the transient Eu-Sr molecule was also observed.

Physical Review LettersApr 17, 197893 citations