Basic Study of Parametric X-ray Radiation for Clinical Diagnosis using 125MeV Linear Particle Accelerator

Okada, Hiroyuki; Kaneda, Takashi; Koike, Sekiya; Kawashima, Y; Suemitsu, Maki; Hayakawa, Yasushi; Tanaka, Sakae

doi:10.2485/jhtb.24.299

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Additional research tools such as transmission X-ray microscopy and scanning photoelectron microscopy [53] are also potential applications for future PCB sources. X-ray imaging techniques can benefit from the use of energy-tunable sources, as the image contrast is affected by the energy of the incident radiation [27][28][29]. This concept may be used, for instance, to improve the yield and accuracy of mammography techniques, in addition to reducing the radiation dose delivered to a patient [28].…”

Section: Discussionmentioning

confidence: 99%

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Tunable free-electron X-ray radiation from van der Waals materials

et al. 2020

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Section: Discussionmentioning

confidence: 99%

“…The energy tunability of X-ray sources is a key factor in many applications such as core level spectroscopy [24][25][26] and various X-ray imaging techniques [27][28][29]. The energy tunability required for such applications is usually achieved in undulator facilities, such as synchrotrons, and free-electron lasers [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Tunable free-electron X-ray radiation from van der Waals materials

et al. 2020

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Temporal and spatial design of x-ray pulses based on free-electron–crystal interaction

2021

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Tunable x-ray radiation sources are of wide importance for imaging and spectroscopy in fundamental science, medicine, and industry. The growing demand for highly tunable, high-brightness lab-scale x-ray sources motivates research of new mechanisms of x-ray generation. Parametric x-ray radiation (PXR) is a mechanism for tunable x-ray radiation from free electrons traversing crystalline materials. Although PXR has been investigated over decades, it remained limited in usages due to the low flux and strict dependence on fixed crystal properties. Here, we find new effects hiding in the PXR mechanisms, which provide control over the radiation polarization and spatial and temporal distribution. The radiation can form ultrashort pulses and delta-pulse trains, which makes the new effects fundamentally different from all conventional mechanisms of x-ray generation. We show how these new effects can be created from free-electron interactions with van der Waals materials. Furthermore, we consider free electrons traversing near material edges, which provides an additional degree of tunability in angular distribution and polarization of PXR. Our findings enable us to utilize recent breakthroughs in the atomic-scale design of 2D material heterostructures to provide platforms for creating tunable x-ray pulses.

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Basic Study of Parametric X-ray Radiation for Clinical Diagnosis using 125MeV Linear Particle Accelerator

Cited by 2 publications

References 11 publications

Tunable free-electron X-ray radiation from van der Waals materials

Tunable free-electron X-ray radiation from van der Waals materials

Temporal and spatial design of x-ray pulses based on free-electron–crystal interaction

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