Wave-field formation in a hollow x-ray waveguide

被引：32

作者：

Bukreeva, I.

Popov, A.

Pelliccia, D.

Cedola, A.

Dabagov, S. B.

Lagomarsino, S.

机构：

[1] CNR, Ist Foton & Nanotecnol, I-00156 Rome, Italy

[2] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

[3] Inst Terr Magnetism Ionosphere & Radiowave Propag, Troitsk 142092, Moscow Region, Russia

[4] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[5] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy

[6] Lab Nazl Frascati, Ist Nazl Fis Nucl, I-00044 Frascati, RM, Italy

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.97.184801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Diffraction and refraction phenomena at the entrance of a hollow x-ray waveguide with weakly absorbing dielectric cladding layers are investigated using two independent approaches: (a) analytical and (b) numerical solutions of the wave equation in the paraxial (parabolic) approximation. It is shown that the wave penetrating through the cladding material substantially modifies the wave field near the waveguide entrance. It results in a significant increase of the total energy flux inside the guiding layer and in additional spatial modulation of the electromagnetic field.

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页数：4

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