Dynamics of plasmas produced by a laser pulse, inside a dense gaseous target, formed in an ambient gas
| Autor: | Andrzej Bartnik, Karol Jach, Robert Świerczyński, Mateusz Majszyk, Tomasz Fok, Łukasz Węgrzyński, Przemysław Wachulak, Henryk Fiedorowicz |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Physics of Plasmas. 29:093302 |
| ISSN: | 1089-7674 1070-664X |
| DOI: | 10.1063/5.0099683 |
| Popis: | In this work, the time development of plasmas produced by interaction of laser pulses, with a nitrogen gas, was investigated. The interaction took place inside a small portion of dense nitrogen gas injected temporarily into a chamber filled with the gas under low pressure. High-temperature plasmas produced directly by the laser pulse were a source of soft x rays and charged particles, ionizing and exciting the surrounding gas. In this way, low-temperature plasmas were produced. The formation of high-temperature plasmas was studied using soft x-ray spectroscopy and x-ray streak imaging. Low-temperature plasmas formed at various distances from the laser focus were investigated using an optical streak camera. Interpretation of the experimental data was supported by numerical modeling of the laser-produced plasma hydrodynamics. It was concluded that depending on the distance from the focal spot, the formation of the low-temperature plasmas was dominated by ion streams or by soft x-ray radiation. |
| Databáze: | OpenAIRE |
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