Observation of parametric X-ray radiation in an anomalous diffraction region

被引：10

作者：

Alexeyev, V. I. ^{[1
,2
]}

Eliseyev, A. N. ^{[1
,2
]}

Irribarra, E. ^{[3
]}

Kishin, I. A. ^{[1
,2
]}

Kubankin, A. S. ^{[1
,2
]}

Nazhmudinov, R. M. ^{[1
,2
]}

机构：

[1] PN Lebedev Phys Inst RAS, 53 Leninskiy Prospect, Moscow, Russia

[2] Belgorod Natl Res Univ, 85 Pobedy St, Belgorod, Russia

[3] Escuela Politec Nacl, Ladron de Guevara E11-253, Quito, Ecuador

来源：

PHYSICS LETTERS A | 2016年 / 380卷 / 36期

关键词：

Parametric X-ray radiation; Relativistic particles; X-ray diffraction; Virtual photons; RELATIVISTIC ELECTRONS; POLARIZATION BREMSSTRAHLUNG; NONRELATIVISTIC ELECTRONS; POLYCRYSTALLINE TARGETS; CRYSTAL; PXR;

D O I：

10.1016/j.physleta.2016.06.055

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new possibility to expand the energy region of diffraction processes based on the interaction of relativistic charged particles with crystalline structures is presented. Diffracted photons related to parametric X-ray radiation produced by relativistic electrons are detected below the low energy threshold for the X-ray diffraction mechanism in crystalline structures for the first time. The measurements were performed during the interaction of 7 MeV electrons with a textured polycrystalline tungsten foil and a highly oriented pyrolytic graphite crystal. The experiment results are in good agreement with a developed model based on the PXR kinematical theory. The developed experimental approach can be applied to separate the contributions of real and virtual photons to the total diffracted radiation generated during the interaction of relativistic charged particles with crystalline targets. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：2892 / 2896

页数：5

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