Spontaneous interference bremsstrahlung effect in the scattering of a relativistic electron by a nucleus in the field of two light waves

Roshchupkin, S. P.; Lysenko, Oleg

doi:10.1134/1.559025

Cited by 23 publications

(27 citation statements)

References 5 publications

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“…Note that if waves' frequency, intensity and polarization are close to each other, then the obtained amplitude (10)-(31) is transformed into the amplitude for the case of a single laser wave. The obtained expressions for the amplitude (10)-(31) in the limit case ω j τ j → ∞ coincide also with the corresponding expressions for the amplitude in the field of two monochromatic waves [37,38].…”

Section: Amplitude Of Ensb Process In Two Laser Wavessupporting

confidence: 75%

“…In more detail, the interference kinematics of ENSB process in a field of two waves is considered in Refs. [37,38].…”

Section: A Interference Kinematicsmentioning

confidence: 99%

“…When considering QED processes in the external field, one can distinguish the case when the laser field is a superposition of two plane waves [37][38][39][40][41][42][43][44][45][46][47]. Herein, the cross section has the form of the sum of partial components.…”

Section: Introductionmentioning

confidence: 99%

“…Study of ENSB in the field of two laser waves was carried out for the nonresonant case and plane monochromatic waves in Refs. [37,38]. Nonresonant ENSB in the field of two moderately strong pulsed laser waves was studied in Ref.…”

Section: Introductionmentioning

confidence: 99%

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Resonant parametric interference effect in spontaneous bremsstrahlung of an electron in the field of a nucleus and two pulsed laser waves

et al. 2018

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Resonant spontaneous bremsstrahlung of an electron scattered by a nucleus in the field of two moderately strong pulsed laser waves is studied theoretically. The process is studied in detail within the interference kinematic region. This region is determined by scattering of particles in the same plane at predetermined angles, at that stimulated absorption and emission of photons of external pulsed waves by an electron occurs in correlated manner. The correspondence between the emission angle and the final-electron energy is established in the kinematic region where the resonant parametric interference effect is manifested. The resonant differential cross section of ENSB process with simultaneous registration of both emission angles of the spontaneous photon and the scattered electron, can exceed by 4-5 orders of magnitude the corresponding cross section in the absence of an external field. It was shown for nonrelativistic electrons that the resonant cross section of ENSB in the field of two pulsed laser waves within the interference region in two order of magnitude may exceed corresponding cross section in the Bunkin-Fedorov kinematic region. The obtained results may be experimentally verified, for example, by scientific facilities at sources of pulsed laser radiation (SLAC, FAIR, XFEL, ELI).

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Section: Amplitude Of Ensb Process In Two Laser Wavessupporting

confidence: 75%

“…In more detail, the interference kinematics of ENSB process in a field of two waves is considered in Refs. [37,38].…”

Section: A Interference Kinematicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Resonant parametric interference effect in spontaneous bremsstrahlung of an electron in the field of a nucleus and two pulsed laser waves

et al. 2018

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“…We determine the resonant frequency ω ηi(r) of the spontaneous gamma-quantum for channel A. We take into account the relations (19) and (20) in the resonant condition (24). After simple calculations [41], we get Here it is indicated:…”

Section: Poles Of the Sb Amplitude In A Strong Fieldmentioning

confidence: 99%

Fundamental physical features of resonant spontaneous bremsstrahlung radiation of ultrarelativistic electrons on nuclei in strong laser fields

Roshchupkin

Dubov

et al. 2022

New J. Phys.

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Theoretically predicted fundamental features in the process of resonant spontaneous bremsstrahlung radiation during the scattering of ultrarelativistic electrons with energies of the order ∼ 100 GeV by the nuclei in strong laser fields with intensities up to I ∼ 1024 W cm−2. Under resonant conditions, an intermediate electron in the wave field enters the mass shell. As a result, the initial second-order process by the fine structure constant is effectively reduced to two first-order processes: laser-stimulated Compton effect and laser-assisted Mott process. The resonant kinematics for two reaction channels (A and B) is studied in detail. An analytical resonant differential cross-section with simultaneous registration of the frequency and the outgoing angle of a spontaneous gamma-quantum for channels A and B is obtained. The resonant differential cross section takes the largest value with a small number of absorbed laser photons. In this case, the resonant cross-section is determined by one parameter, depending on the small transmitted momenta, as well as the resonance width. In strong fields, spontaneous gamma quanta of small energies are most likely to be emitted compared to the energy of the initial electrons. At the same time, the angular width of the radiation of such gamma quanta is the largest. With an increase in the number of absorbed laser photons, the resonant cross-section decreases quite quickly, and the resonant frequency of spontaneous gamma quanta increases. It is shown that the resonant differential cross-section has the largest value in the region of average laser fields (I ∼ 1018 W cm−2) and can be of the order of ∼ 1 0 19 in units Z 2 α r e 2 . With an increase in the intensity of the laser wave, the value of the resonant differential cross-section R r e s max decreases and for the intensity I ∼ 1024 W cm−2 is R r e s max ≲ 1 0 7 in units Z 2 α r e 2 . The obtained results reveal new features of spontaneous emission of ultrarelativistic electrons on nuclei in strong laser fields and can be tested at international laser installations.

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Parametric interference Compton effect in two pulsed laser waves

Voroshilo

Roshchupkin

Nedoreshta

2015

J. Phys. B: At. Mol. Opt. Phys.

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We study the emission of a photon by an electron moving in a pulsed plane wave field of high intensity. The wave field is modelled as the superposition of two co-propagating, elliptically polarised, plane waves of different frequencies. Upon calculating the differential probability of the process we identify a kinematic region associated with a parametric interference effect. Geometrically, this region is characterised by the final photon being emitted into the plane defined by the initial electron momentum and the wave propagation direction. Quantitatively, the parametric interference effect leads to an increase in partial emission probabilities of the processes with correlated absorption of photons of both waves by an order of magnitude.

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Spontaneous interference bremsstrahlung effect in the scattering of a relativistic electron by a nucleus in the field of two light waves

Cited by 23 publications

References 5 publications

Resonant parametric interference effect in spontaneous bremsstrahlung of an electron in the field of a nucleus and two pulsed laser waves

Resonant parametric interference effect in spontaneous bremsstrahlung of an electron in the field of a nucleus and two pulsed laser waves

Fundamental physical features of resonant spontaneous bremsstrahlung radiation of ultrarelativistic electrons on nuclei in strong laser fields

Parametric interference Compton effect in two pulsed laser waves

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