X-ray Self-Emission Imaging of Hydrodynamic Laser-Induced Astrophysical Phenomena

Filippov, E.; Burdonov, K.; Pikuz, T. A.; Skobelev, I. Yu.

doi:10.3390/sym14122536

Cited by 2 publications

(1 citation statement)

References 83 publications

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“…As can be seen from the X-ray imaging model of single-component materials, the main factors affecting imaging are the source characteristics, the absorption coefficient of the detected element, and the thickness of the material. For high absorption ratio materials containing elemental 𝑀 𝑎 and elemental 𝑀 𝑏 , the element type is known, and imaging using the same ray source can be optimized using previous models [29][30][31]. The imaging process for materials with high absorption ratios is shown in Figure 2.…”

Section: Model Buildingmentioning

confidence: 99%

Approximation Algorithm for X-ray Imaging Optimization of High-Absorption Ratio Materials

Liu

Jiang

et al. 2022

Symmetry

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In the application of X-ray industrial flaw detection, the exposure parameters directly affect the image quality. The voltage of the tube is the most important factor, which is difficult to be accurately calculated. Especially in the detection of a workpiece composed of both high absorption coefficient and low absorption coefficient materials, the improper symmetric balance of the tube voltage would lead to an overexposure or underexposure phenomenon. In this paper, based on the X-ray absorption model, combined with the performance of the X-ray imaging detector, and taking the optimal symmetry and contrast as the model constraint condition, the key factors of high absorption ratio material imaging are decomposed. Through expansion and iteration, the calculation process is simplified, the optimal imaging convergence surface is found, and then the optimal energy input conditions of high absorptivity materials are obtained and symmetrically balanced. As a result, this paper solves the problem of fast selection and symmetric factor chosen of the optimal tube voltage when imaging materials with high absorption ratios. It reduces the subsequent complications of the X-ray image enhancement process and obtains a better image quality. Through experimental simulation and measurement verification, the error between the theoretical calculation results and the measured data was better than 5%.

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Section: Model Buildingmentioning

confidence: 99%

Approximation Algorithm for X-ray Imaging Optimization of High-Absorption Ratio Materials

Liu

Jiang

et al. 2022

Symmetry

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Emission of ions and electrons correlated with soft and hard x-rays evolution from thermal plasma

Ahmad,

Rafique,

Arslan

et al. 2024

Physics of Plasmas

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This paper presents a correlation between time evolution of ions and electrons with soft and hard x-rays emitted from argon plasma. The plasma setup comprises of two copper electrodes connected with a dc power supply. Faraday cups were used to monitor time evolution of ions, to extract their energy, temperature, and flux. Double Langmuir probe was employed to determine electron temperature, energy, and density. To explore time-resolved emission of soft x-rays, PIN photodiodes filtered with 24 μm aluminum, 90 μm Mylar, 80 μm copper, and 10 μm silver have been used. To evaluate temporal evolution of hard x-rays, a scintillator–photomultiplier system was utilized. The plasma was generated using argon gas at atmospheric pressure 760 Torr and constant flow rate 5 L/min at 7, 9, and 11 kV. The flux, energy, and temperature of Ar ions increase with the increase in the operating potential. Soft x-ray signals last much longer (3000 ns) than those of electrons' and ions' signals (300 ns). The plasma operated at 11 kV permits highest emission of ions, electrons, and x-rays. The ions, electrons, and hard and soft x-ray irradiation on silicon wafer exhibited the presence of damaged trails. Ion irradiation showed the presence of latent damaged trails. Electron irradiation caused more damage to the Si surface compared to ion irradiation due to higher flux and density. Soft x-rays had a lesser effect as compared to Si exposed to hard x-rays due to higher energy of the hard x-rays. In the case of hard x-rays irradiated Si, erupted volcano-like structure is formed.

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X-ray Self-Emission Imaging of Hydrodynamic Laser-Induced Astrophysical Phenomena

Cited by 2 publications

References 83 publications

Approximation Algorithm for X-ray Imaging Optimization of High-Absorption Ratio Materials

Approximation Algorithm for X-ray Imaging Optimization of High-Absorption Ratio Materials

Emission of ions and electrons correlated with soft and hard x-rays evolution from thermal plasma

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