Seeded self-modulated laser wakefield acceleration

Andreev, N. E.; Kuznetsov, S. V.; Pogosova, A. A.; Steinhauer, L. C.; Kimura, W. D.

doi:10.1103/physrevstab.9.031303

Cited by 6 publications

(7 citation statements)

References 13 publications

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“…STELLA-LW intends to use a compressed e-beam bunch to act as a seed in a capillary discharge plasma in order to generate a wakefield. This wakefield is then amplified by the ATF CO 2 laser pulse in a process called seeded self-modulated laser wakefield acceleration (SM-LWFA) [4].…”

Section: Discussionmentioning

confidence: 99%

Subpicosecond Double Electron Bunch Generation

Kimura¹,

Yakimenko²,

Babzien³

et al. 2006

AIP Conference Proceedings

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Section: Discussionmentioning

confidence: 99%

Subpicosecond Double Electron Bunch Generation

Kimura¹,

Yakimenko²,

Babzien³

et al. 2006

AIP Conference Proceedings

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“…These expected results assume a Ti:sapphire laser driver. If one switches to longer wavelength drivers such as CO 2 lasers, the density required to reach a similar energy (10 GeV) is even lower and falls into the range of 10 15 cm −3 [60]. We note that, nowadays state-of-the-art beam-driven wakefield accelerators are also operated at low density regimes (10 14−17 cm −3 ) [61][62][63].…”

Section: Characterization Of Extremely Low-density Gas Jetmentioning

confidence: 91%

“…The peak density corresponding to the lowest pressure has dropped to 3 × 10 16 cm −3 and the density on the edge is 5 × 10 15 cm −3 . A plasma density on the order of 10 15 cm −3 is desirable for CO 2 laser wakefield acceleration due to the relatively long pulse duration (1-2 ps) currently available [60]. The peak density is approximately proportional to the backing pressure so that by further reducing the backing pressure down to a few psi, it is possible to lower the plasma density down to 10 15 cm −3 .…”

Section: Characterization Of Extremely Low-density Gas Jetmentioning

confidence: 99%

Ionization induced plasma grating and its applications in strong-field ionization measurements

Zhang¹,

Nie²,

Wu³

et al. 2021

Plasma Phys. Control. Fusion

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An ionization induced plasma grating can be formed by spatially selective ionization of gases by the interference of two intersecting ultra-short laser pulses. The density modulation of a plasma grating can approach unity since the plasma is produced only where the two pulses constructively interfere and ionization does not occur in destructive interference regions. Such a large density modulation leads to efficient Thomson scattering of a second ultra-short probe pulse once the Bragg condition is satisfied. By measuring the scattering efficiency, it is possible to determine the absolute electron density in the plasma grating and thereby deduce the ionization degree for a given neutral gas density. In this paper, we demonstrate the usefulness of this concept by showing two applications: ionization degree measurement of strong-field ionization of atoms and molecules and characterization of extremely low-density gas jets. The former application is of particular interest for ionization physics studies in dense gases where the collision of the ionized electron with neighboring neutrals may become important-sometimes referred to as many-body ionization; and the latter is useful for plasma-based acceleration that requires extremely low-density plasmas.

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“…Equivalently, at fixed n e current 10-µm CPA pulses can trigger SM-LWFA at 100⇥ lower P L than 1-µm pulses: e.g., a recent study of SM-LWFA at n e =3⇥ 10 17 cm 3 used 1-µmp u l s e s of P L ⇡ 170 TW [25]. Simulations [26,27] have borne out these general expectations for ⇠10-µmC P Ap u l s e s . Here, we demonstrate them in the laboratory for the first time.…”

mentioning

confidence: 96%

Plasma electron acceleration driven by a long-wave-infrared laser

Downer,

Zgadzaj,

Welch

et al. 2023

Preprint

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Laser-driven plasma accelerators provide tabletop sources of relativistic electron bunches and femtosecond x-ray pulses, but usually require petawatt-class solid-state-laser pulses of wavelength λsub> ≈ 1 μm. Longer-λsub> lasers can potentially accelerate higher-quality bunches, since they require less power to drive larger wakes in less dense plasma. Here, we report on a self-injecting plasma accelerator driven by a long-wave-infrared laser: a chirped-pulse-amplified CO<2sub> laser (λ 10 μm). Through optical scattering experiments, we observed wakes that 4-ps CO<2sub> pulses with < 1/2 terawatt (TW) peak power drove in hydrogen plasma of density down to 1/100 atmosphere via a self-modulation (SM) instability. Shorter, more powerful CO<2sub> pulses drove wakes in plasma down to 1/1000 atmosphere that captured and accelerated plasma electrons to relativistic energy. Collimated quasi-monoenergetic features in the electron output marked the onset of a transition from SM to ″bubble-regime″ acceleration, portending future higher-quality accelerators driven by yet shorter, more powerful pulses.

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Seeded self-modulated laser wakefield acceleration

Cited by 6 publications

References 13 publications

Subpicosecond Double Electron Bunch Generation

Subpicosecond Double Electron Bunch Generation

Ionization induced plasma grating and its applications in strong-field ionization measurements

Plasma electron acceleration driven by a long-wave-infrared laser

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