X-ray emission characteristics in magnetically driven plasma jet experiments on PTS facility
| Autor: | Li Zhao, Shaotong Zhou, Xiao Ren, Wenkang Zou, Qiang Xu, Hongchun Cai, Zhang Siqun, Kun-lun Wang, Xian Bin Huang, Liu Pan |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Nuclear and High Energy Physics Magnetic energy Astrophysics::High Energy Astrophysical Phenomena Bremsstrahlung X-ray Electron Radiation 01 natural sciences Atomic and Molecular Physics and Optics 010305 fluids & plasmas Nuclear physics Radiation flux Nuclear Energy and Engineering 0103 physical sciences Thermal lcsh:QC770-798 lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Electrical and Electronic Engineering 010306 general physics Diode |
| Zdroj: | Matter and Radiation at Extremes, Vol 5, Iss 1, Pp 014401-014401-8 (2020) |
| Popis: | Jets are commonly observed astrophysical phenomena. To study the x-ray emission characteristics of jets, a series of radial foil Z-pinch experiments are carried out on the Primary Test Stand at the Institute of Fluid Physics, China Academy of Engineering Physics. In these experiments, x-ray emission ranging from the soft region (0.1–10 keV) to the hard region (10 keV–500 keV) is observed when the magnetic cavity breaks. The radiation flux of soft x-rays is measured by an x-ray diode and the dose rate of the hard x-rays by an Si-PIN detector. The experimental results indicate that the energy of the soft x-rays is several tens of kilojoules and that of the hard x-rays is ∼200 J. The radiation mechanism of the x-ray emission is briefly analyzed. This analysis indicates that the x-ray energy and the plasma kinetic energy come from the magnetic energy when the magnetic cavity breaks. The soft x-rays are thought to be produced by bremsstrahlung of thermal electrons (∼100 eV), and the hard x-rays by bremsstrahlung of super-hot electrons (∼mega-electron-volt). These results may be helpful to explain the x-ray emission by the jets from young stellar objects.Jets are commonly observed astrophysical phenomena. To study the x-ray emission characteristics of jets, a series of radial foil Z-pinch experiments are carried out on the Primary Test Stand at the Institute of Fluid Physics, China Academy of Engineering Physics. In these experiments, x-ray emission ranging from the soft region (0.1–10 keV) to the hard region (10 keV–500 keV) is observed when the magnetic cavity breaks. The radiation flux of soft x-rays is measured by an x-ray diode and the dose rate of the hard x-rays by an Si-PIN detector. The experimental results indicate that the energy of the soft x-rays is several tens of kilojoules and that of the hard x-rays is ∼200 J. The radiation mechanism of the x-ray emission is briefly analyzed. This analysis indicates that the x-ray energy and the plasma kinetic energy come from the magnetic energy when the magnetic cavity breaks. The soft x-rays are thought to be produced by bremsstrahlung of thermal electrons (∼100 eV), and the hard x-rays by bremsstrahlu... |
| Databáze: | OpenAIRE |
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