Acceleration of Neutral Atoms by Strong Short-Wavelength Short-Range Electromagnetic Pulses

被引:0
|
作者
Melezhik, Vladimir S. [1 ,2 ]
Shadmehri, Sara [1 ]
机构
[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Moscow Region, Russia
[2] Dubna State Univ, 19 Univ Skaya St, Dubna 141982, Moscow Region, Russia
基金
俄罗斯科学基金会;
关键词
nondipole effects; atomic acceleration; quantum-quasiclassical approach; strong laser field;
D O I
10.3390/photonics10121290
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Nondipole terms in the atom-laser interaction arising due to the presence of a magnetic component in an electromagnetic wave and its inhomogeneity lead to the nonseparability of the center-of-mass (CM) and electron variables in the neutral atom and, as a consequence, to its acceleration. We investigate this effect and the accompanying excitation and ionization processes for the hydrogen atom in strong (1012 - 2x1014 W/cm2) linearly polarized short-wavelength (5 eV less than or similar to PLANCK CONSTANT OVER TWO PI omega less than or similar to 27 eV) electromagnetic pulses of about 8 fs duration. The study was carried out within the framework of a hybrid quantum-quasiclassical approach in which the coupled time-dependent Schrodinger equation for an electron and the classical Hamilton equations for the CM of an atom were simultaneously integrated. Optimal conditions with respect to the frequency and intensity of the electromagnetic wave for the acceleration of atoms without their noticeable ionization were found in the analyzed region.
引用
收藏
页数:11
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