Channeling of fast particles and associated phenomena

Bazylev, V. A.; Zhevago, N. K.

doi:10.1070/pu1990v033n12abeh002665

Cited by 19 publications

(36 citation statements)

References 89 publications

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“…We used the following values: v t = 11.6 · 10 5 cm/s [9] and U Figure 2 demonstrates that the parameters p and N vary in wide ranges: N = 1...100, p = 0.1 − 500 for projectile positron and p = 0.001 − 0.1 for proton. The upper limiting values of p's are larger by more than an order of magnitude than those accessible in the undulators based on the motion of the charged particles in periodic magnetic fields and also those in the field of the laser radiation [2], [6].…”

mentioning

confidence: 94%

“…[1], [2]) as well as in a "simple" (i.e. non-periodic) bent channel [3] are known, although in the latter case the theoretical and experimental data are much less extensive so far.…”

mentioning

confidence: 99%

“…non-periodic) bent channel [3] are known, although in the latter case the theoretical and experimental data are much less extensive so far. The theory and various practical implementations of the electromagnetic radiation by a charge moving in spatially periodic static magnetic fields (a magnetic undulator), in the laser field (a laser-based undulator) have long history [4,5] and are well elaborated [1], [2], [6]. It is also known (see eg.…”

mentioning

confidence: 99%

“…The AIR mechanism allows to make an undulator with the parameters N u and p changing in a wide range which is inaccessible for undulators based on the motion of charged particles in periodic magnetic fields and also in the field of the laser radiation [2], [6]. In the suggested scheme, AIR is generated by the relativistic charged particles, with relativistic † N u is the number of periods in the undulator and p = 2πγ a/λ is its parameter (see figure 1).…”

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confidence: 99%

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Coherent radiation of an ultrarelativistic charged particle channelled in a periodically bent crystal

Korol

Solov’yov²,

Greiner

1998

J. Phys. G: Nucl. Part. Phys.

104

251

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Abstract. We suggest a new type of the undulator radiation which is generated by an ultra-relativistic particle channeled along a periodically bent crystallographic plane or axis. The electromagnetic radiation arises mainly due to the bending of the particle's trajectory, which follows the shape of the channel. The parameters of this undulator, which totally define the spectrum and the angular distribution of the radiation (both spontaneous and stimulated), depend on the type of the crystal and the crystallographic plane (axis), on the type of a projectile and its energy, and on the shape of the bent channel, and, thus, can be varied significantly by varying these characteristics.As an example, we consider the acoustically induced radiation (AIR) which is generated by ultra-relativistic particles channeled in a crystal which is bent by a transverse acoustic wave. The AIR mechanism allows to make the undulator with the main parameters varying in wide ranges, which are inaccessible in the undulators based on the motion of particles in the periodic magnetic fields and also in the field of the laser radiation. The intensity of AIR can be easily made larger than the intensity of the radiation in a linear crystal and can be varied in a wide range by varying the frequency and the amplitude of the acoustic wave in the crystal.A possibility to generate stimulated emission of high-energy photons (in kev-MeV region) is also discussed.

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mentioning

confidence: 94%

“…[1], [2]) as well as in a "simple" (i.e. non-periodic) bent channel [3] are known, although in the latter case the theoretical and experimental data are much less extensive so far.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Coherent radiation of an ultrarelativistic charged particle channelled in a periodically bent crystal

Korol

Solov’yov²,

Greiner

1998

J. Phys. G: Nucl. Part. Phys.

104

251

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“…To estimate the line radiation transport, the algorithm for plane geometry scenarios available in FOREV with the opacity database TOPATOM [11] is used, assuming that the wall radiation flux is equal to one from the plasma in front of particular wall fragment with the temperature T and the density n of carbon impurity calculated as described above. For the case with n DT = 3 · 10 19 m À3 , T = 3 keV, s = 0.1 ms and maximum Q = 0.8 MJ/m 2 the radiation flux at the vessel walls is shown in Fig.…”

Section: Plasma Modelling In Iter Geometrymentioning

confidence: 99%