High e+/e− Ratio Dense Pair Creation with 1021W.cm−2 Laser Irradiating Solid Targets

Liang, Edison; Clarke, Taylor; Henderson, Alexander; Fu, Weiqi; Lo, Wen Jui; Taylor, Donald C.; Chaguine, Petr; Zhou, Siyang; Hua, Ye; Cen, Xiao; Wang, X.; Kao, Jeremy; Hasson, Hannah; Dyer, G.; Serratto, Kristina; Riley, Nathan; Donovan, M.; Ditmire, T.

doi:10.1038/srep13968

Cited by 68 publications

(62 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3c). This peak density is much higher than that reported in the both BW and BH experiments as well as relevant simulations8910111213141516192728293031. The total positron yield is as high as 1.05 × 10 11 , which is more than an order of magnitude larger than that in laser foil interactions27, although our laser intensity is lower by more than an order of magnitude.…”

Section: Resultscontrasting

confidence: 57%

“…Later, they collide with the focused counter-propagating laser waves from the opposite directions, initiating the multi-photon BW process. Here, the BH process is intrinsically inefficient because of the low-Z NCD plasmas and the thin Al cone thickness891011121314. Therefore, this process can be reasonably ignored in our simulations.…”

Section: Resultsmentioning

confidence: 99%

“…So far, the major way of producing positrons with lasers in experiments relies upon the BH process, which is based on the decay of bremsstrahlung γ-rays from electrons in high-Z targets. It is shown that energetic positrons could be obtained by direct laser–solid interactions8910 or by laser-driven electrons colliding with solid targets11121314. However, the positrons obtained have a low density of ∼10 16−17 cm −3 with a laser energy conversion efficiency to positrons around ∼0.02% only1516.…”

mentioning

confidence: 99%

See 2 more Smart Citations

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

et al. 2016

View full text Add to dashboard Cite

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.

show abstract

Section: Resultscontrasting

confidence: 57%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2016

View full text Add to dashboard Cite

show abstract

“…A (collisional) plasma will behave similarly in that limit. For a rigorous examination, see Fitzpatrick (2008 As given by Liang et al (2015) and Sarri et al (2015).…”

Section: Plasma Skin Depth and Plasma Frequencymentioning

confidence: 99%

“…Charge neutrality approached asymptotically, but effectively achieved. Plasma skin depth of the order of or slightly smaller than the beam diameter (l s < d); simulations predict such a system will exhibit some collective behaviour (Wilks et al 2005;Chen et al 2015;Liang et al 2015;Sarri et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Debye length and plasma skin depth: two length scales of interest in the creation and diagnosis of laboratory pair plasmas

et al. 2017

View full text Add to dashboard Cite

In traditional electron/ion laboratory plasmas, the system size L is much larger than both the plasma skin depth l s and the Debye length λ D . In current and planned efforts to create electron/positron plasmas in the laboratory, this is not necessarily the case. A low-temperature, low-density system may have λ D < L < l s ; a high-density, thermally relativistic system may have l s < L < λ D . Here we consider the question of what plasma physics phenomena are accessible (and/or diagnostically exploitable) in these different regimes and how this depends on magnetization. While particularly relevant to ongoing pair plasma creation experiments, the transition from single-particle behaviour to collective, 'plasma' effects -and how the criterion for that threshold is different for different phenomena -is an important but often neglected topic in electron/ion systems as well.

show abstract

Bright X/$$\gamma$$-ray emission and lepton pair production by strong laser fields: a review

Yu,

Liu,

Zhao

et al. 2024

Rev. Mod. Plasma Phys.

View full text Add to dashboard Cite

The advent of high-power ultra-short laser pulses opens up new frontiers of relativistic non-linear optics, high energy density physics and laboratory astrophysics. As the laser electric field in the particle rest frame approaches the Schwinger field $$E_{cr} = 1.3 \times 10^{18}\,\textrm{V} \textrm{m}^{-1}$$ E cr = 1.3 × 10 18 V m - 1 , the laser interaction with matter enters into the quantum electrodynamics (QED) dominated regime, where extremely rich non-linear phenomena take place, such as a violent acceleration of charged particles, copious lepton pair production, and ultra-brilliant X/$$\gamma$$ γ -ray emission. Among them, X/$$\gamma$$ γ -ray emission based on the laser-plasma is generally characterized by large photon flux, high brilliance, small source size, and high photon energy, which can even annihilate into lepton pairs by colliding with photons. Though various schemes have been proposed for bright high-energy photon emission and lepton generation and acceleration, many predictions remain to be confirmed and thoroughly tested in experiments. In this review, we introduce recent advances in bright X/$$\gamma$$ γ -ray radiation and lepton pair generation in the QED regime by the interaction of relativistic intense lasers with various plasma targets. The characteristics of the radiation and secondary particles generated via these schemes are summarized, and the experimental progresses are elaborated.

show abstract

High e+/e− Ratio Dense Pair Creation with 1021W.cm−2 Laser Irradiating Solid Targets

Cited by 68 publications

References 33 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

Debye length and plasma skin depth: two length scales of interest in the creation and diagnosis of laboratory pair plasmas

Bright X/$$\gamma$$-ray emission and lepton pair production by strong laser fields: a review

Contact Info

Product

Resources

About