Abstract
The scattering of X-ray ultrashort pulses (USPs) is an important aspect of the diffraction analysis of matter using modern USP sources. The theoretical basis, which considers the specifics of the interaction of ultrashort pulses with complex polyatomic structures, is currently not well developed. In general, research is focused on the specifics of the interaction of ultrashort pulses with simple systems—these are atoms and simple molecules. In this work, a theory of scattering of X-ray ultrashort pulses by complex polyatomic structures is developed, considering the specifics of the interaction of ultrashort pulses with such a substance. The obtained expressions have a rather simple analytical form, which allows them to be used in diffraction analysis. As an example, it is shown that the obtained expressions can be used to study the structures of deoxyribonucleic (DNA) and ribonucleic (RNA) acids.
Highlights
X-ray ultrashort pulse (USP) scattering is the basis of X-ray diffraction analysis (XRD) [1,2,3,4]
The main value responsible for the spatial arrangement of atoms in the system is determined by the parameter δi,j, which is calculated by Equation (4)
We considered scattering on deoxyribonucleic acid (DNA) nucleotides: adenine, guanine, thymine, and cytosine
Summary
X-ray ultrashort pulse (USP) scattering is the basis of X-ray diffraction analysis (XRD) [1,2,3,4]. Particular attention is focused on ultrashort pulse physics [5,8,9] Using such USPs, it is possible to conduct research on the structure of matter with high temporal and spatial resolution. The scattering processes of femto- and attosecond pulses on such structures have not been sufficiently studied and are actively developed in our time [6,16,17,18,19,20,21,22,23,24,25] Such theories consider simple systems, such as atoms, simple molecules, model systems, systems of one-part atoms, etc.
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