XUV and x-ray elastic scattering of attosecond electromagnetic pulses on atoms. (31st October 2017)

• Record Type: Journal Article
• Authors: Rosmej, F B; Astapenko, V A; Lisitsa, V S
• Is Part Of: Journal of physics. Volume 50:Number 23(2017:Dec. 01)
• Publication Date: 2017-10-31
• Subjects: ultra-short laser pulses -- elastic scattering -- scattering tensor -- non-dipole correction -- polarization charge; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/aa90cf
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: Elastic scattering of electromagnetic pulses on atoms in XUV and soft x-ray ranges is considered for ultra-short pulses. The inclusion of the retardation term, non-dipole interaction and an efficient scattering tensor approximation allowed studying the scattering probability in dependence of the pulse duration for different carrier frequencies. Numerical calculations carried out for Mg, Al and Fe atoms demonstrate that the scattering probability is a highly nonlinear function of the pulse duration and has extrema for pulse carrier frequencies in the vicinity of the resonance-like features of the polarization charge spectrum. Closed expressions for the non-dipole correction and the angular dependence of the scattered radiation are obtained.