Channeling radiation in a bent crystal

Arutyunov, V. A.; Kudryashov, Nikolay A.; Samsonov, V.; Strikhanov, M.

doi:10.1016/0375-9601(91)90559-q

Cited by 6 publications

(10 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[41,42,53,59,60,61,62], as well as in a 'simple' (i.e. non-periodic, one-arc) bent channel [63,64,65], are known, although in the latter case the theoretical and experimental data are scarce, at least up to now.…”

Section: Channeling Radiationmentioning

confidence: 99%

Channeling of Positrons Through Periodically Bent Crystals: On the Feasibility of Crystalline Undulator and Gamma-Laser

Korol

Solov’yov

Greiner

2004

Int. J. Mod. Phys. E

128

View full text Add to dashboard Cite

The electromagnetic radiation generated by ultra-relativistic positrons channelling in a crystalline undulator is discussed. The crystalline undulator is a crystal whose planes are bent periodically with the amplitude much larger than the interplanar spacing. Various conditions and criteria to be fulfilled for the crystalline undulator operation are established. Different methods of the crystal bending are described. We present the results of numeric calculations of spectral distributions of the spontaneous radiation emitted in the crystalline undulator and discuss the possibility to create the stimulated emission in such a system in analogy with the free electron laser. A careful literature survey covering the formulation of all essential ideas in this field is given. Our investigation shows that the proposed mechanism provides an efficient source for high energy photons, which is worth to study experimentally.

show abstract

Section: Channeling Radiationmentioning

confidence: 99%

Channeling of Positrons Through Periodically Bent Crystals: On the Feasibility of Crystalline Undulator and Gamma-Laser

Korol

Solov’yov

Greiner

2004

Int. J. Mod. Phys. E

128

View full text Add to dashboard Cite

show abstract

“…Within the linear approximation in £ the second equation (33) defines the deviation from this trajectory through 40 The term -pv/R(z) represents the centrifugal force due to the curvature of the bent channel. R(z) is the curvature radius of the curve (3) and is equal to "W-HiE' (35) When writing (35) we neglected the terms ~ £ 2 and higher.…”

Section: Motion Of the Particle In A Channel Bent By The Awmentioning

confidence: 99%

Photon Emission by an Ultra-Relativistic Particle Channeling in a Periodically Bent Crystal

Korol

Solov’yov²,

Greiner

1999

Int. J. Mod. Phys. E

292

View full text Add to dashboard Cite

This paper is devoted to a detailed analysis of the new type of undulator radiation generated by an ultra-relativistic charged particle channeling along a crystal plane, which is periodically bent by a transverse acoustic wave, as well as to the conditions limiting the observation of this phenomenon. This mechanism makes feasible the generation of electromagnetic radiation, both spontaneous and stimulated, emitted in a wide range of the photon energies, from X-up to 7-rays. II Int. J. Mod. Phys. E 1999.08:49-100. Downloaded from www.worldscientific.com by UNIVERSITY OF TORONTO on 03/16/15. For personal use only. Int. J. Mod. Phys. E 1999.08:49-100. Downloaded from www.worldscientific.com by UNIVERSITY OF TORONTO on 03/16/15. For personal use only.

show abstract

“…Using (36) in (32) and in (31) and carrying out some algebra one ends up with the y z (y,z) (y 0 ,z 0 ) ρ θ Figure 3. The coordinate ρ in a bent channel: ρ is the distance from some point (y, z) in the channel to its centerline.…”

Section: Equations Of Motion In Periodically Bent Crystal With Accoun...mentioning

confidence: 99%

“…Several papers [30,31,21] have treated the radiation emitted by light projectiles channeled in non-periodically one-arc bent crystals. In this case the channel bending gives rise to the synchrotron-type radiation in addition to the channeling one.…”

Section: Introductionmentioning

confidence: 99%

Effect of dechanneling on the photon emission by ultra-relativistic positrons channeling in a periodically bent crystal

Korol¹,

Solov’yov²,

Greiner³

2001

AIP Conference Proceedings

View full text Add to dashboard Cite

We investigate, both analytically and numerically, the influence of the dechanneling process on the parameters of undulator radiation generated by ultrarelativistic positron channelling along a crystal plane, which is periodically bent. The bending might be due either to the propagation of a transverse acoustic wave through the crystal, or due to the static strain as it occurs in superlattices. In either case the periodically bent crystal serves as an undulator which allows to generate X-ray and γ-radiation.We propose the scheme for accurate quantitative treatment of the radiation in presence of the dechanneling. The scheme includes (i) the analytic expression for spectral-angular distribution which contains, as a parameter, the dechanneling length, (ii) the simulation procedure of the dechanneling process of a positron in periodically bent crystals. Using these we calculate the dechanneling lengths of 5 GeV positrons channeling in Si, Ge and W crystals, and the spectral-angular and spectral distributions of the undulator over broad ranges of the photons. The calculations are performed for various parameters of the channel bending.

show abstract

Channeling radiation in a bent crystal

Cited by 6 publications

References 6 publications

Channeling of Positrons Through Periodically Bent Crystals: On the Feasibility of Crystalline Undulator and Gamma-Laser

Channeling of Positrons Through Periodically Bent Crystals: On the Feasibility of Crystalline Undulator and Gamma-Laser

Photon Emission by an Ultra-Relativistic Particle Channeling in a Periodically Bent Crystal

Effect of dechanneling on the photon emission by ultra-relativistic positrons channeling in a periodically bent crystal

Contact Info

Product

Resources

About