Dynamics of plasmas produced by a laser pulse, inside a dense gaseous target, formed in an ambient gas

Bartnik, A.; Jach, K.; Swierczynski, R.; Majszyk, Mateusz; Fok, Tomasz; Węgrzyński, Łukasz; Wachulak, P.; Fiedorowicz, Henryk

doi:10.1063/5.0099683

Cited by 2 publications

(2 citation statements)

References 29 publications

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“…The emission maximum recorded after such a long time could be a result of the propagation of the shockwave or the formation of low-temperature plasma by the fast ions or electrons from the LPP. A detailed analysis concerning occurrence of this emission maximum supported by the corresponding numerical simulations was reported by Bartnik et al [11].…”

Section: Discussion Of the Resultssupporting

confidence: 63%

“…On the other hand, at the border of the injected gas with the ambient gas, this radiation can propagate and ionize the gas. The resulting low-temperature plasma emits light, which is visible as intense maxima on the right and left sides of the streak images [11]. Optical radiation recorded for the central area above the LPP, occurring at a time point of approximately 600 ns (Figs.…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

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Investigation of low-temperature plasmas formed in low-density gases surrounding laser-produced plasmas

et al. 2023

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Low-temperature plasma production is possible as a result of photoionization using high-intensity extreme ultraviolet (EUV) and soft X-ray (SXR) pulses. Plasma of this type is also present in outer space, e.g., aurora borealis. It also occurs when high-velocity objects enter the atmosphere, during which period high temperatures can be produced locally by friction. Low-temperature plasma is also formed in an ambient gas surrounding the hot laser-produced plasma (LPP). In this work, a special system has been prepared for investigation of this type of plasma. The LPP was created inside a chamber filled with a gas under a low pressure, of the order of 1–50 mbar, by a laser pulse (3–9 J, 1–8 ns) focused onto a gas puff target. In such a case, the SXR/EUV radiation emitted from the LPP was partially absorbed in the low-density gas. In this case, high- and low-temperature plasmas (T e ~100 eV and ~1 eV, respectively) were created locally in the chamber. Investigation of the EUV-induced plasmas was performed mainly using spectral methods in ultraviolet/visible (UV/VIS) light. The measurements were performed using an echelle spectrometer, and additionally, spatial–temporal measurements were performed using an optical streak camera. Spectral analysis was supported by the PGOPHER numerical code.

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Section: Discussion Of the Resultssupporting

confidence: 63%

Section: Discussion Of the Resultsmentioning

confidence: 99%

Investigation of low-temperature plasmas formed in low-density gases surrounding laser-produced plasmas

et al. 2023

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Spatial and temporal evolution of laser plasma produced using a double-stream gas puff target

Bartnik,

Jach,

Świerczyński

et al. 2023

Physics of Plasmas

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Laser plasma produced using a double-stream gas puff target is an intense source of soft x-ray (SXR) and extreme ultraviolet (EUV) radiation, however, without the harmful emission of debris associated with a solid target. Debris-free laser plasma x-ray and EUV sources have been applied in many various applications, including metrology, imaging in a nanoscale, tomography, processing materials, emission and absorption spectroscopy, laboratory astrophysics and astrochemistry, radiobiology, and radiochemistry. In this work, the results of the experimental and theoretical studies on the spatial and temporal evolution of laser plasma produced as a result of irradiation of an argon/helium gas puff target with laser pulses of 1.3 or 6 ns time duration generated with an Nd:YAG laser system are presented. Imaging and spectral measurements of SXR emission from the plasma, created in the double-stream gas puff target, have been performed with the use of an x-ray streak camera. The analysis of the results of spectral measurements, supported by numerical simulations of plasma x-ray emission, allowed the estimation of the plasma electron temperature and its changes over time. Experimental data were compared with the results of theoretical studies performed using a computer model of plasma hydrodynamics. It was shown that plasma expansion is fast enough to reduce the plasma density in the laser focus area during the laser–plasma interaction.

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Dynamics of plasmas produced by a laser pulse, inside a dense gaseous target, formed in an ambient gas

Cited by 2 publications

References 29 publications

Investigation of low-temperature plasmas formed in low-density gases surrounding laser-produced plasmas

Investigation of low-temperature plasmas formed in low-density gases surrounding laser-produced plasmas

Spatial and temporal evolution of laser plasma produced using a double-stream gas puff target

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