Method for preparation of crystalline undulators

Avakian, R.; Avetyan, K. T.; Ispirian, K.A.; Melikyan, E.G

doi:10.1016/s0168-9002(02)01316-5

Cited by 30 publications

(18 citation statements)

References 5 publications

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“…Different ideas were proposed for the creation of crystalline undulators [3][4][5][6][7][8][9][10], but they are still pending realization. Recently [2] we demonstrated experimentally by means of x rays that microscratches on the crystal surface make sufficient stresses for the creation of a crystalline undulator by making a series of scratches with a period of 1 mm.…”

Section: Methods Of Crystalline Undulator Creationmentioning

confidence: 99%

Crystal undulator as a new compact source of radiation

Bellucci

Biryukov

Britvich

et al. 2004

Phys. Rev. ST Accel. Beams

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Crystalline undulators with periodically deformed crystallographic planes offer coherent electromagnetic fields on the order of 1000 T and provide undulator period L in submillimeter range. We present an idea for creation of a crystalline undulator and report its realization. One face of a silicon crystal was given periodic microscratches (grooves) by means of a diamond blade, with a period ranging from 0.1 to 0.5 mm in different samples. The x-ray tests of the crystal deformation have shown that a sinusoidal-like shape of crystalline planes goes through the bulk of the crystals. This opens up the possibility for experiments with high-energy particles channeled in the crystalline undulator, a new compact source of radiation. The first experiments on photon emission in the crystal undulator are in preparation at IHEP (Protvino) with 2 -15 GeV positrons and at LNF (Frascati) with 500-800 MeV positrons, aiming to produce undulator photons in the range of 50 -500 keV. The results of Monte Carlo simulations for the planned experiments are presented as well.

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Section: Methods Of Crystalline Undulator Creationmentioning

confidence: 99%

Crystal undulator as a new compact source of radiation

Bellucci

Biryukov

Britvich

et al. 2004

Phys. Rev. ST Accel. Beams

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“…Because of the slight difference in the lattice constants in silicon and germanium crystals (for example, the spacing between the (100) layers in Si and Ge is 1.358 and 1.414 Å , respectively), the addition of a small content of Ge to Si in the molecular beam epitaxy (MBE) growing process results in the strain in the crystal which, in turn, leads to the lattice bending [218]. By varying the germanium content x [24,26,27,31,42,185,187,218] one can obtain periodically bent crystalline channels. 2 In [31] it is mentioned that, probably, for the first time radiation production on the basis of this kind of periodic structures was mentioned by Kephart et al [140].…”

Section: Growing Of Crystals With Pbchmentioning

confidence: 99%

“…19), one arrives at the equation for a driven pendulum with the term −c 2 S (z) z=ct = ak 2 u c 2 sin(k u ct) being the driving force. A short-hand notation σ stands for the ratio of the frequencies 26) We emphasize that the dependence ρ(t) defines the deviation of the trajectory from the channel centerline. 25) where Δ u = 2πc/λ u and Δ ch = c (κ/ε) 1/2 (with κ = U ) are the frequencies of undulator and channeling motions, respectively.…”

Section: A231 Specific Case: Harmonic Approximations For S(z) and mentioning

confidence: 99%

Channeling and Radiation in Periodically Bent Crystals

Korol

Solov’yov

Greiner

2014

Springer Series on Atomic, Optical, and Plasma Physics

148

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“…A number of corresponding numerical results were presented to illustrate the developed theory. The importance of the ideas suggested and discussed in the cited papers has also been realized by other authors resulting in a significant increase of the number of publications in the field during last years [9][10][11][12][13][14][15][16][17] but, unfortunately, often without proper citation.…”

Section: Introductionmentioning

confidence: 99%

<title>Number of photons and brilliance of the radiation from a crystalline undulator</title>

2005

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The scheme for accurate quantitative treatment of the radiation from a crystalline undulator in presence of the dechanneling and the photon attenuation is presented. The number of emitted photons and the brilliance of electromagnetic radiation generated by ultra-relativistic positrons channeling in a crystalline undulator are calculated for various crystals, positron energies and different bending parameters. It is demonstrated that with the use of high-energy positron beams available at present in modern colliders it is possible to generate the crystalline undulator radiation with energies from hundreds of keV up to tens of MeV region. The brilliance of the undulator radiation within this energy range is comparable to that of conventional light sources of the third generation but for much lower photon energies.

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Method for preparation of crystalline undulators

Cited by 30 publications

References 5 publications

Crystal undulator as a new compact source of radiation

Crystal undulator as a new compact source of radiation

Channeling and Radiation in Periodically Bent Crystals

<title>Number of photons and brilliance of the radiation from a crystalline undulator</title>

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