CHARGE-NUMBER OF PULSES-CONVERTER

It is described the charge-number of pulses-converter, which was successfully applied in the ”Program-apparatus complex for investigation of gamma- and X-rays radiations, generated by relativistic electrons in crystals” [1] at Kharkiv linear electron accelerators. This device is in the condition for high energy electron (positron) beam charge measurements with accuracy 2·10−10 C and current measurements in the range of 10−10...10−8 A.

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Generation of high-energy electron-positron pairs in the collision of a laser-accelerated electron beam with a multipetawatt laser

Physical Review Accelerators and Beams ◽

10.1103/physrevaccelbeams.20.043401 ◽

2017 ◽

Vol 20 (4) ◽

Cited By ~ 26

Author(s):

M. Lobet ◽

X. Davoine ◽

E. d’Humières ◽

L. Gremillet

Keyword(s):

Electron Beam ◽

High Energy ◽

Energy Electron ◽

High Energy Electron ◽

Electron Positron

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Resonant Effect of High-Energy Electron–Positron Pairs Production in Collision of Ultrarelativistic Electrons with an X-ray Electromagnetic Wave

Universe ◽

10.3390/universe7070210 ◽

2021 ◽

Vol 7 (7) ◽

pp. 210

Author(s):

Georgii K. Sizykh ◽

Sergei P. Roshchupkin ◽

Victor V. Dubov

Keyword(s):

High Energy ◽

Energy Electron ◽

Opening Angle ◽

High Energy Electron ◽

Scattered Electron ◽

Differential Probability ◽

X Ray ◽

Electron Positron ◽

Pulsar Radiation ◽

Resonant Effect

The process of resonant high-energy electron–positron pairs production by electrons in an X-ray pulsar electromagnetic field is studied theoretically. Under the resonance conditions, the second-order process under consideration effectively reduces into two sequential first-order processes: X-ray-stimulated Compton effect and X-ray–stimulated Breit–Wheeler process. The kinematics of the process is studied in detail: the dependencies of the energy of the scattered electron on its outgoing angle and the energies of the particles of the pair on the outgoing angle of the scattered electron and the opening angle of the pair are obtained. The analysis of the number of different possible particles energies values in the entire range of the angles is also carried out, according to which the energies of the particles of the pair can take up to eight different values at a fixed outgoing angle of the scattered electron and opening angle of the pair. The estimate of the resonant differential probability per unit time of the process, which reaches the maximum value of 24 orders of the value of the non-resonant differential probability per unit time, is obtained. The angular distribution of the differential probability per unit time of the process is analyzed, particularly for the case of high-energy positrons presenting in pulsar radiation.

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