GRAVITY, ASTROPHYSICS

Multiple two-photon resonance-enhanced ionization of elements in natural conditions: Nebulae in the vicinity of hot stars

S. Johansson^a, V. S. Letokhov<sup>b

a</sup> Department of Physics, Lund University
^b Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow

Abstract: The possibility is considered of two-photon ionization of atomic particles with the atom (ion) level quantum being in quasi-resonance with an intense noncoherent monochromatic VUV light in natural conditions, for example, inside planetary nebulae in the vicinity of bright stars. The collisionless resonance-enhanced photoionization mechanism considered may give rise to multiply-charged ions as a result of successive (multiple) resonance-enhanced ionization of the photoions produced in a rarefied media with very low rate of the recombination.

PACS: 32.80.Rm, 95.30.Es, 98.40Md

Received: 24.11.2000
Revised: 09.01.2001

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2001, 73:3, 118–120

Bibliographic databases:

•