High power femtosecond lasers at ELI-NP

Dabu, R.

doi:10.1063/1.4909578

Cited by 6 publications

(1 citation statement)

References 27 publications

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“…Positron yield will also be beyond 10 10 for an optimal converter thickness near 4 RL. With the practical possibility of high-intensity short-pulse lasers with laser power reach to 10PW in the near future (e.g., the "ELI-NP" facility which is under construction [48]), high energy positron yield can extend to 5 × 10 11 , about 500 times higher than present results. Under this condition, high density electron-positron pair plasma with particle density reach to 10 18 cm −3 maybe created in laboratory [12].…”

Section: Dependence Of Positron Yields and Optimalmentioning

confidence: 53%

Optimization of positrons generation based on laser wakefield electron acceleration

Han²,

Zhang³

et al. 2016

Phys. Rev. Accel. Beams

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Laser based positron represents a new particle source with short pulse duration and high charge density. Positron production based on laser wakefield electron acceleration (LWFA) has been investigated theoretically in this paper. Analytical expressions for positron spectra and yield have been obtained through a combination of LWFA and cascade shower theories. The maximum positron yield and corresponding converter thickness have been optimized as a function of driven laser power. Under the optimal condition, high energy (>100 MeV) positron yield up to 5 × 10 11 can be produced by high power femtosecond lasers at ELI-NP. The percentage of positrons shows that a quasineutral electron-positron jet can be generated by setting the converter thickness greater than 5 radiation lengths.

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Section: Dependence Of Positron Yields and Optimalmentioning

confidence: 53%

Optimization of positrons generation based on laser wakefield electron acceleration

Han²,

Zhang³

et al. 2016

Phys. Rev. Accel. Beams

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The ELI–NP facility for nuclear physics

Balabanski

Cǎta-Danil

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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TEM modes influenced electron acceleration by Hermite–Gaussian laser beam in plasma

Ghotra

Kant

2016

Laser Part. Beams

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Electron acceleration by a circularly polarized Hermite–Gaussian (HG) laser beam in the plasma has been investigated theoretically for the different transverse electromagnetic (TEM) mode indices (m, n) as (0, 1), (0, 2), (0, 3), and (0, 4). HG laser beam possesses higher trapping force compared with a standard Gaussian beam owing to its propagation characteristics during laser–electron interaction. A single-particle simulation indicates a resonant enhancement in the electron acceleration with HG laser beam. We present the intensity distribution for different TEM modes. We also analyze the dependence of beam width parameter on electron acceleration distance, which effectively influences the electron dynamics. Electron acceleration up to longer distance is observed with the lower modes. However, the higher electron energy gain is observed with higher modes at shorter distance of propagation.

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High power femtosecond lasers at ELI-NP

Cited by 6 publications

References 27 publications

Optimization of positrons generation based on laser wakefield electron acceleration

Optimization of positrons generation based on laser wakefield electron acceleration

The ELI–NP facility for nuclear physics

TEM modes influenced electron acceleration by Hermite–Gaussian laser beam in plasma

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