Linearly polarized X-ray fluorescence computed tomography based on a Thomson scattering light source: a Monte Carlo study

Chi, Zhijun; Du, Yingchao; Huang, Wenhui; Tang, Chuanxiang

doi:10.1107/s1600577520003574

Cited by 35 publications

(17 citation statements)

References 16 publications

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“…Where the formula (5) ,the formula (6) show Lorentz equation and the energy equation of the electron . Here p , u , a are respectively normalized electron momentum, normalized vector potential and normalized electron velocity.…”

Section:  =mentioning

confidence: 99%

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Analysis of the pulse widths on radiation properties from an electron driven by intense elliptically polarized laser

zhang¹,

chen²,

tian³

2023

Preprint

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In this paper, a model of electron electromagnetic radiation is established by using Lorentz formula for the interaction of a tightly focused elliptically polarized laser with a single electron under the condition of nonlinear Thomson scattering. Let the initial pulse width λ0 be 3.3fs. By changing the laser pulse width λ0, the energy distribution and space distribution of electron radiation emitted by electron under different conditions are obtained. The results show that when laser interacts with a single electron, the electromagnetic radiation emitted by the electron accumulates in a cone shape in space. With the increase of pulse width λ0, the peak energy of electron radiation is bimodal, and the peak power of electron radiation drops. At the same time, the longer it takes for the electron radiation to reach the peak, the frequency spectrum and time function show that the high-frequency component decreases, the cutoff frequency decreases, and the harmonic frequency increases.

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Section:  =mentioning

confidence: 99%

“…The peak value of electron radiation power is related to the change of acceleration. It can be inferred from formula (6). The maximum value of acceleration corresponds to the peak value of radiation power.…”

Section:  mentioning

confidence: 99%

Analysis of the pulse widths on radiation properties from an electron driven by intense elliptically polarized laser

zhang¹,

chen²,

tian³

2023

Preprint

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“…Moving and tilting a patient into every direction and angle is not possible, however. Therefore, more compact X-ray sources like laser-based Thomson scattering sources could be an ideal solution [60][61][62][63].…”

Section: Sensitivity In Thorax and Abdomenmentioning

confidence: 99%

X-ray-Fluorescence Imaging for In Vivo Detection of Gold-Nanoparticle-Labeled Immune Cells: A GEANT4 Based Feasibility Study

Ungerer

Staufer

Schmutzler

et al. 2021

Cancers

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The growing field of cellular therapies in regenerative medicine and oncology calls for more refined diagnostic tools that are able to investigate and monitor the function and success of said therapies. X-ray Fluorescence Imaging (XFI) can be applied for molecular imaging with nanoparticles, such as gold nanoparticles (GNPs), which can be used in immune cell tracking. We present a Monte Carlo simulation study on the sensitivity of detection and associated radiation dose estimations in an idealized setup of XFI in human-sized objects. Our findings demonstrate the practicability of XFI in human-sized objects, as immune cell tracking with a minimum detection limit of 4.4 × 105 cells or 0.86 μg gold in a cubic volume of 1.78 mm3 can be achieved. Therefore, our results show that the current technological developments form a good basis for high sensitivity XFI.

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“…Nonlinear Thomson scattering refers to the process that free electrons interact with intense lasers, which emits electromagnetic radiations (figure 1). Therefore, the application of nonlinear inverse Thomson scattering (NITS) as x-ray and γ-ray sources has become a research hotspot, and the rays are widely used in biomedicine 7,8 and nuclear physics 9 .…”

Section: Introductionmentioning

confidence: 99%

Symmetry of nonlinear inverse Thomson scattering with initial phase modulation of ultrashort circularly polarized laser

Yang,

Zhang,

Cao

et al. 2023

Eighteenth National Conference on Laser Technology and Optoelectronics

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Nonlinear inverse Thomson scattering (NITS) has gained many applications as premium x-ray sources, and is of great research values. Based on the classical theory of NITS, the effects of laser’s initial phase on NITS radiation are analyzed through numerical simulation when the relativistic electron collides with a circularly polarized ultrashort intense laser pulse. When pulse width of the laser is very short, the initial phase has a significant impact on the symmetry of electron’ trajectory and spatial radiation power, and the electrons’ trajectories show a ‘triple symmetry’ property with respect to the initial phase. The angular distribution of NITS radiation energy is generally circular, but there is a prominent single peak, which shows the high collimation. The direction and energy of the radiation peak can be modulated by initial phase periodically. Furthermore, the symmetry of radiate spatial spectrum varies with the change of initial phase, but the distribution pattern of the spectrum remains unchanged. Broad-band x-rays with different wavelength widths can be obtained at different positions in space. The findings above show that it is feasible to use initial phase of the laser to modulate the symmetry of the x-rays generated by NITS, which also provides a numerical basis for obtaining x-rays with different wavelength widths in practical experiments.

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Linearly polarized X-ray fluorescence computed tomography based on a Thomson scattering light source: a Monte Carlo study

Cited by 35 publications

References 16 publications

Analysis of the pulse widths on radiation properties from an electron driven by intense elliptically polarized laser

Analysis of the pulse widths on radiation properties from an electron driven by intense elliptically polarized laser

X-ray-Fluorescence Imaging for In Vivo Detection of Gold-Nanoparticle-Labeled Immune Cells: A GEANT4 Based Feasibility Study

Symmetry of nonlinear inverse Thomson scattering with initial phase modulation of ultrashort circularly polarized laser

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