On features of the radiation from an electron moving along a helix inside a cylindrical hole in a homogeneous dielectric

被引：10

作者：

Arzumanyan, S. R. ^{[1
]}

Grigoryan, L. Sh. ^{[1
]}

Khachatryan, H. F. ^{[1
]}

Kotanjyan, A. S. ^{[1
]}

Saharian, A. A. ^{[1
]}

机构：

[1] Natl Acad Sci, Inst Appl Problems Phys, Yerevan 0014, Armenia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2008年 / 266卷 / 17期

关键词：

synchrotron radiation; helical undulators;

D O I：

10.1016/j.nimb.2008.02.002

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The radiation from a charge moving along a helical trajectory inside a cylindrical hole in homogeneous dielectric medium is investigated. Prompted by availability of materials with large dielectric permittivity F and small absorption, we discuss the features of this type of radiation for media with epsilon >> 1. It is shown that there are high peaks in the angular distribution of radiation intensity at well-defined harmonics. The conditions are specified for the cavity-to-helix radii ratio, rho(1)/rho(0), under which the angle-integrated radiation intensity on some harmonics exceeds that in the empty space. Though the amplification of radiation intensity increases with increasing E, the corresponding "resonant" values of rho(1)/rho(0), ratio are practically independent of the dielectric permittivity of surrounding medium. It is shown that an analogous amplification of radiation takes place essentially for the same values of rho(1)/rho(0) also for the radiation in a cylindrical waveguide with conducting walls. An explanation of this phenomenon is given. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：3703 / 3707

页数：5

共 11 条

[1] A PARAMETRIC FREE-ELECTRON LASER BASED ON THE MICROTRON [J].

ALEXEEV, VI ;

ALIEVA, EV ;

BELOVINTSEV, KA ;

BESSONOV, EG ;

SEROV, AV ;

CHERENKOV, PA .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1989, 282 (2-3) :436-438

[2] ON THE THEORY OF PARAMETRIC FREE-ELECTRON LASERS BASED ON OPENED RESONATORS [J].

ALEXEEV, VI ;

BESSONOV, EG ;

SEROV, AV .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1989, 282 (2-3) :439-441

[3] PARAMETRIC FREE-ELECTRON LASERS [J].

BESSONOV, EG .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1989, 282 (2-3) :442-444

[4]

Bordovitsyn V. A., 1999, SYNCHROTRON RAD THEO, DOI DOI 10.1142/3492

[5]

GEVORGIAN LA, 1994, IZV AKAD NAUK ARM SS, V19, P239

[6]

Grigoryan L. S., 1995, SOV J CONT PHYS, V30, p[239, 1]

[7]

Hofman A., 2004, PHYS SYNCHROTRON RAD

[8]

Karapetyan G. G., 1977, Izvestiya Akademia Nauk Armyanskoi SSR Fizika, V12, P186

[9] Electromagnetic field and radiation for a charge moving along a helical trajectory inside a waveguide with dielectric filling [J].

Kotanjyan, A. S. ;

Saharian, A. A. .

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2007, 40 (34) :10641-10656

[10] Electromagnetic field generated by a charge moving along a helical orbit inside a dielectric cylinder [J].

Saharian, A. A. ;

Kotanjyan, A. S. ;

Grigoryan, M. L. .

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2007, 40 (06) :1405-1418

← 1 2 →