Angular distributions of parametric X-ray radiation from a diamond crystal

Takabayashi, Y.; Korotchenko, K. B.; Pivovarov, Yu.L.; Tukhfatullin, T.A.

doi:10.1016/j.nimb.2017.02.080

Cited by 16 publications

(30 citation statements)

References 23 publications

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“…1 shows the vertical angular distributions of radiation for the following distances R between the crystal and the detector: 5, 1, 0.5, and 0.2 m. All the conditions except for the distances coincide with the conditions of the experiment in Ref. [20]. For convenience of comparison, the calculation is performed for different detector element sizes and motion steps, chosen so that the solid angle overlapped by the detector unit remains constant.…”

Section: Analysis Of Dependence Of Radiation Angular Distributiomentioning

confidence: 98%

“…A detailed description of the technique for each radiation mechanism and a comparison between experimental results [19,20] and calculations is given in Ref. [21].…”

Section: Accounting For the Spatial Dimensions Of The Electron Beammentioning

confidence: 99%

“…To simplify the problem, the calculations are performed for the experimental conditions in Ref. [20] for the reflecting plane (011). The electron beam energy is 255 MeV, and the sample used is a diamond with a large face perpendicular to the h100i axis and a thickness of 50 μm.…”

Section: Analysis Of Dependence Of Radiation Angular Distributiomentioning

confidence: 99%

“…For convenience of comparison, the calculation is performed for different detector element sizes and motion steps, chosen so that the solid angle overlapped by the detector unit remains constant. Since the photon yield for higher reflection orders does not exceed 3%-5% of the first allowed order intensity of reflection (022) [20], the contributions of higher orders were not taken into account.…”

Section: Analysis Of Dependence Of Radiation Angular Distributiomentioning

confidence: 99%

See 3 more Smart Citations

New method of electron beam transverse size measurement by angular distribution of emission in a thin crystal

Goponov

Laktionova

Shatokhin

et al. 2019

Phys. Rev. Accel. Beams

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A technique is proposed for determining beam dimensions on a target by measuring two-dimensional angular distributions of the radiation for two distances between the crystal where the radiation is generated and a coordinate detector. The dimensions are determined from the results of a least squares method procedure with varying parameters, where the adjustable function is the distribution for a shorter distance and the fitting function is the convolution of the angular distribution at a greater distance with a twodimensional Gaussian distribution whose parameters are uniquely related to the beam dimensions on the target and the distances between the crystal and the detector. The minimum measured beam sizes are about 50-60 μm for the parametric x-ray mechanism and an electron energy of less than 1 GeV and 10-15 μm for the mechanism of diffracted transition radiation and electrons with an energy above several GeV.

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Section: Analysis Of Dependence Of Radiation Angular Distributiomentioning

confidence: 98%

“…A detailed description of the technique for each radiation mechanism and a comparison between experimental results [19,20] and calculations is given in Ref. [21].…”

Section: Accounting For the Spatial Dimensions Of The Electron Beammentioning

confidence: 99%

Section: Analysis Of Dependence Of Radiation Angular Distributiomentioning

confidence: 99%

Section: Analysis Of Dependence Of Radiation Angular Distributiomentioning

confidence: 99%

See 2 more Smart Citations

New method of electron beam transverse size measurement by angular distribution of emission in a thin crystal

Goponov

Laktionova

Shatokhin

et al. 2019

Phys. Rev. Accel. Beams

Self Cite

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show abstract

“…There has been a lot of experimental research in this field [1,[4][5][6][7][8][9][10][11][12][13][14][15][16] and at present an effort is made toward increasing the intensity of the PXR source. For example, the choice of the materials of the target was analyzed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Radical increase of the parametric X-ray intensity under condition of extremely asymmetric diffraction

Skoromnik

Baryshevsky

Ulyanenkov³

et al. 2017

Nuclear Instruments and Methods in Physics Research Section B:

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Parametric X-ray radiation (PXR) from relativistic electrons moving in a crystal along the crystal-vacuum interface is considered. In this geometry the emission of photons is happening in the regime of extremely asymmetric diffraction (EAD). In the EAD case the whole crystal length contributes to the formation of X-ray radiation opposed to Laue and Bragg geometries, where the emission intensity is defined by the X-ray absorption length. We demonstrate that this phenomenon should be described within the dynamical theory of diffraction and predict a radical increase of the PXR intensity. In particular, under realistic electron-beam parameters, an increase of two orders of magnitude in PXR-EAD intensity can be obtained in comparison with conventional experimental geometries of PXR. In addition we discuss in details the experimental feasibility of the detection of PXR-EAD

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Comment about the article Interpretation of the results of the experiment on generation of parametric X-radiation by relativistic electrons in a single-crystal target, by S.V. Blazhevich and A.V. Noskov

Artru

2019

Nuclear Instruments and Methods in Physics Research Section B:

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Angular distributions of parametric X-ray radiation from a diamond crystal

Cited by 16 publications

References 23 publications

New method of electron beam transverse size measurement by angular distribution of emission in a thin crystal

New method of electron beam transverse size measurement by angular distribution of emission in a thin crystal

Radical increase of the parametric X-ray intensity under condition of extremely asymmetric diffraction

Comment about the article Interpretation of the results of the experiment on generation of parametric X-radiation by relativistic electrons in a single-crystal target, by S.V. Blazhevich and A.V. Noskov

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