High-energy-density electron jet generation from an opening gold cone filled with near-critical-density plasma

Yu, Tong-Pu; Yu, Wei; Shao, F. Q.; Luan, Song; Zou, D. B.; Ge, Z. Y.; Zhang, Guo-Bo; Wang, J. W.; Wang, W. Q.; Li, X. H.; Liu, J. X.; Ouyang, Jian‐Ming; Wong, A. Y.

doi:10.1063/1.4904420

Cited by 19 publications

(9 citation statements)

References 34 publications

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“…It is shown that the laser intensity can be greatly boosted due to the coupling effect of nonlinear plasma effects and tightly focusing of the laser pulse in the cone424344. The strengthened laser ponderomotive force accelerates the electrons both radially and forward with considerable radiation emitted.…”

Section: Resultsmentioning

confidence: 99%

Dense GeV electron–positron pairs generated by lasers in near-critical-density plasmas

et al. 2016

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Pair production can be triggered by high-intensity lasers via the Breit–Wheeler process. However, the straightforward laser–laser colliding for copious numbers of pair creation requires light intensities several orders of magnitude higher than possible with the ongoing laser facilities. Despite the numerous proposed approaches, creating high-energy-density pair plasmas in laboratories is still challenging. Here we present an all-optical scheme for overdense pair production by two counter-propagating lasers irradiating near-critical-density plasmas at only ∼1022 W cm−2. In this scheme, bright γ-rays are generated by radiation-trapped electrons oscillating in the laser fields. The dense γ-photons then collide with the focused counter-propagating lasers to initiate the multi-photon Breit–Wheeler process. Particle-in-cell simulations indicate that one may generate a high-yield (1.05 × 1011) overdense (4 × 1022 cm−3) GeV positron beam using 10 PW scale lasers. Such a bright pair source has many practical applications and could be basis for future compact high-luminosity electron–positron colliders.

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Section: Resultsmentioning

confidence: 99%

Dense GeV electron–positron pairs generated by lasers in near-critical-density plasmas

et al. 2016

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“…Here, the NCD plasma is usually referred to as plasma with a density between n 0.1 c and n 10 . c In our scheme, NCD plasma is filled in the cone due to its efficient coupling with intense laser pulses [27]. In the following, we investigate the influences of the density of NCD plasma on the electron trapping and γ ray emission.…”

Section: The Density Of Ncd Plasmamentioning

confidence: 99%

Enhanced electron trapping andγray emission by ultra-intense laser irradiating a near-critical-density plasma filled gold cone

Zhu

Yin

et al. 2015

New J. Phys.

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The radiation trapping effect (RTE) of electrons in the interaction of an ultra-intense laser and a nearcritical-density plasma-filled gold cone is numerically investigated by using the particle-in-cell code EPOCH. It is found that, by using the cone, the threshold laser intensity for electron trapping can be significantly decreased. The trapped electrons located behind the laser front and confined near the laser axis oscillate significantly in the transverse direction and emit high-energy γ photons in the forward direction. With parameters optimized, a narrow γ photon angular distribution and a highenergy conversion efficiency from the laser to the γ photons can be obtained. The proposed scheme may offer possibilities to demonstrate the RTE of electrons in experiments at approachable laser intensities and serve as a novel table-top γ ray source.

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“…Till now, lots of acceleration mechanisms have been proposed, such as the plasma wake field acceleration, 14 the target normal sheath acceleration (TNSA), [15][16][17][18] shock-wave acceleration at the front of the target, 19,20 and radiation pressure acceleration (RPA). 21,22 Although the maximum energy an ion can obtain from the laser pulse is proportional to the intensity of laser pulse and the cube root of acceleration time or distance theoretically, 23,24 yet the focused peak intensity of laser is always limited by the material breakdown threshold in practice, 25 and many other undesirable effects such as instabilities come to appear over long interaction time. 26 To date, a lot of improvements have been made by optimizing laser parameters, or designing new targets.…”

confidence: 99%

Improving the quality of proton beams via double targets driven by an intense circularly polarized laser pulse

Wang

et al. 2016

AIP Advances

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A new scheme is proposed to improve the quality of proton beams via ultra-intense laser pulse interacting with double plasma targets, which consist of a pre-target with relatively low density and a main target with high density. Both one- and two-dimensional Particle-in-Cell simulations show that, the using of an appropriate pre-target can help to obtain a much stronger longitudinal charge separation field in contrast to using only the main target. And proton beam with lower momentum divergence, better monochromaticity and collimation, as well as higher current density is generated. Moreover, due to the strengthened coupling between the laser pulse and targets, the energy conversion from laser pulse to protons is also increased.

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High-energy-density electron jet generation from an opening gold cone filled with near-critical-density plasma

Cited by 19 publications

References 34 publications

Dense GeV electron–positron pairs generated by lasers in near-critical-density plasmas

Dense GeV electron–positron pairs generated by lasers in near-critical-density plasmas

Enhanced electron trapping andγray emission by ultra-intense laser irradiating a near-critical-density plasma filled gold cone

Improving the quality of proton beams via double targets driven by an intense circularly polarized laser pulse

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