Radiational self-polarization of electrons moving in the electromagnetic plane-wave field

Багров, В. Г.; Fedosov, N. I.; Копытов, Г. Ф.; Oxsyzyan, S. S.; Tlyachev, V. B.

doi:10.1007/bf02753138

Cited by 5 publications

(15 citation statements)

References 6 publications

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“…The very similar result of the high polarization degree in the ultrarelativistic case was obtained in the preprint [23] by integrating the cross section in the rest frame of the initial electron. Moreover, one may show that the formula for polarization time calculated according to such an approach coincides with expressions derived in [20][21][22] (we will not adduce these rather cumbersome calculations here). However, as it was demonstrated in Ref.…”

Section: Analysis Of the Process With A Spin Flipmentioning

confidence: 55%

“…[24] and [20][21][22] do not agree because different spin quantum numbers were used in these papers. In particular, it seems that the choice that is made in Refs.…”

Section: Discussionmentioning

confidence: 99%

“…(12), which lead to the nonzero radiative polarization, as we know from Refs. [20][21][22]. We will return to these questions in the next section.…”

Section: Description Of the Final Electron's Polarizationmentioning

confidence: 99%

“…[20][21][22]. This may be explained by the fact that the eigenvalue of the spin operator used in the papers cited represents neither helicity nor the transverse polarization.…”

Section: Analysis Of the Process With A Spin Flipmentioning

confidence: 99%

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Radiative polarization of electrons in a strong laser wave

Karlovets

2011

Phys. Rev. A

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We reanalyze the problem of radiative polarization of electrons brought into collision with a circularly polarized strong plane wave. We present an independent analytical verification of formulae for the cross section given by D.\,Yu. Ivanov et al [Eur.\ Phys.\ J. C \textbf{36}, 127 (2004)]. By choosing the exact electron's helicity as the spin quantum number we show that the self-polarization effect exists only for the moderately relativistic electrons with energy $\gamma = E/mc^2 \lesssim 10$ and only for a non-head-on collision geometry. In these conditions polarization degree may achieve the values up to 65%, but the effective polarization time is found to be larger than 1\,s even for a high power optical or infrared laser with intensity parameter $\xi = |{\bf E}| m c^2/E_c \hbar \omega \sim 0.1$ ($E_c = m^2 c^3/e \hbar$). This makes such a polarization practically unrealizable. We also compare these results with the ones of some papers where the high degree of polarization was predicted for ultrarelativistic case. We argue that this apparent contradiction arises due to the different choice of the spin quantum numbers. In particular, the quantum numbers which provide the high polarization degree represent neither helicity nor transverse polarization, that makes the use of them inconvenient in practice.Comment: minor changes compared to v3; to appear in PR

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Section: Analysis Of the Process With A Spin Flipmentioning

confidence: 55%

“…[24] and [20][21][22] do not agree because different spin quantum numbers were used in these papers. In particular, it seems that the choice that is made in Refs.…”

Section: Discussionmentioning

confidence: 99%

“…(12), which lead to the nonzero radiative polarization, as we know from Refs. [20][21][22]. We will return to these questions in the next section.…”

Section: Description Of the Final Electron's Polarizationmentioning

confidence: 99%

“…[20][21][22]. This may be explained by the fact that the eigenvalue of the spin operator used in the papers cited represents neither helicity nor the transverse polarization.…”

Section: Analysis Of the Process With A Spin Flipmentioning

confidence: 99%

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Radiative polarization of electrons in a strong laser wave

Karlovets

2011

Phys. Rev. A

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“…Spin effects in laser-assisted Mott scattering and laser-assisted Möller scattering were investigated in [29,30] and [31], respectively. Polarization effects in the multiphoton Compton scattering were investigated in [32][33][34][35][36][37][38][39][40]. Transfer of polarization from the laser beam to positrons via Compton scattering and pair production is shown in [41].…”

Section: Introductionmentioning

confidence: 99%

Above-threshold ionization with highly charged ions in superstrong laser fields. III. Spin effects and their dependence on laser polarization

2015

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Spin effects in the tunneling regime of strong-field ionization of hydrogenlike highly charged ions in linearly as well as circularly polarized laser fields are investigated. The impact of the polarization of a laser field on the spin effects is analyzed. Spin-resolved differential ionization rates are calculated employing the relativistic Coulombcorrected strong-field approximation developed in the previous paper of the series. Analytical expressions for spin asymmetries and the spin-flip probability, depending on the laser's polarization, are obtained for the photoelectron momentum corresponding to the maximum of the tunneling probability. A simple intuitive model is developed for the description of spin dynamics in tunnel ionization. The spin flip is shown to be experimentally observable by using moderate highly charged ions with a charge of the order of 20 and a laser field with an intensity of I ∼ 10 22 W/cm 2 .

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