The influence of strong magnetic fields on position production in heavy-ion collisions

Rumrich, Klaus; Greiner, Walter; Soff, G.

doi:10.1016/0375-9601(87)90168-x

Cited by 9 publications

(5 citation statements)

References 13 publications

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“…The magnetic field effects in the process of pair production in ion collisions have been considered for the first time in Refs. [11][12][13]. It was concluded that the effect of magnetic field is rather small.…”

Section: Introductionmentioning

confidence: 99%

Pair production in a magnetic and radiation field in a pulsar magnetosphere

2015

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In the present work one-and two-photon pair production in a subcritical magnetic field have been considered. Two-photon production has been studied in the resonant case, when the cross section considerably increases compared to the nonresonant case. While one-photon pair production is considered to be the main mechanism of plasma generation in a pulsar magnetosphere, we suggest the existence of another one, which is resonant two-photon production process.Mod. Phys. Lett. A 30, 1550111 (2015); doi: http://dx

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Section: Introductionmentioning

confidence: 99%

Pair production in a magnetic and radiation field in a pulsar magnetosphere

2015

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“…For collisions with low energies E ∼ (5 − 10)MeV•A of our interest here it follows that h ∼ 10 15 G, for R ∼ R cr (30 − 50) fm, and v nucl ∼ 10 −1 , cf. also [63].…”

Section: Approach To the Problemmentioning

confidence: 99%

Electron-Positron Vacuum Instability in Strong Electric Fields. Relativistic Semiclassical Approach

Voskresensky

2021

Universe

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The instability of electron-positron vacuum in strong electric fields is studied. First, falling to the Coulomb center is discussed at Z>137/2 for a spinless boson and at Z>137 for electron. Subsequently, focus is concentrated on description of deep electron levels and spontaneous positron production in the field of a finite-size nucleus with the charge Z>Zcr≃170. Next, these effects are studied in application to the low-energy heavy-ion collisions. Subsequently, we consider phenomenon of “electron condensation” on levels of upper continuum crossed the boundary of the lower continuum ϵ=−m in the field of a supercharged nucleus with Z≫Zcr. Finally, attention is focused on many-particle problems of polarization of the quantum electrodynamics (QED) vacuum and electron condensation at ultra-short distances from a source of charge. We argue for a principal difference of cases, when the size of the source is larger than the pole size rpole, at which the dielectric permittivity of the vacuum reaches zero and smaller rpole. Some arguments are presented in favor of the logical consistency of QED. All of the problems are considered within the same relativistic semiclassical approach.

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“…where θ 1 is the polar angle of the first photon, and the sign in the first expression coincides with the sign p − z . It should be noted that the hard resonant photon must be directed almost perpendicularly to the magnetic field in view of the choice of reference system (12). Using relation (17), we obtain…”

Section: Conditions For Resonant Processmentioning

confidence: 99%

“…The magnetic field produced by moving ions can reach and even exceed the critical quantum-electrodynamics value of H c ≈ 4.41 · 10 13 G even for ion energies on the order of the Coulomb barrier. Nevertheless, the effect of the magnetic field is usually disregarded in accordance with the conclusions drawn in [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Resonant generation of an electron–positron pair by two photons to excited Landau levels

Diachenko

Novak

Kholodov

2015

J. Exp. Theor. Phys.

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We consider the resonant generation of an electronpositron pair by two polarized photons to arbitrarily low Landau levels. The resonance occurs when the energy of one photon exceeds the one-photon generation threshold, and the energy of the other photon is multiple to the spacing between the levels. The cross section of the process is determined taking into account the spins of particles. The order of magnitude of the cross section is the highest when the magnetic moments of the particles are oriented along the magnetic field.

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The influence of strong magnetic fields on position production in heavy-ion collisions

Cited by 9 publications

References 13 publications

Pair production in a magnetic and radiation field in a pulsar magnetosphere

Pair production in a magnetic and radiation field in a pulsar magnetosphere

Electron-Positron Vacuum Instability in Strong Electric Fields. Relativistic Semiclassical Approach

Resonant generation of an electron–positron pair by two photons to excited Landau levels

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