X-ray phase-contrast imaging with an Inverse Compton Scattering source

Endrizzi, Marco; Carpinelli, M.; Delogu, Pasquale; Oliva, Piernicola; Golosio, Bruno; Gureyev, T. E.; Bottigli, U.; Stefanini, A.; Siu, Karen Kit Wan

doi:10.1063/1.3478194

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…Thus depending on the electron energy and pulse frequency, the emitted radiation can range from extreme ultraviolet, ~100 eV, to gamma, ~1 MeV, energies. With such a broad range of frequencies, Compton backscattering has been proposed for several applications including, phase contrast imaging [2], radiosurgery [3], lithography [4], and nuclear resonance fluorescence [5].…”

Section: Introductionmentioning

confidence: 99%

A nonlinear plasma retroreflector for single pulse Compton backscattering

Palastro¹,

Gordon²,

Hafizi³

et al. 2016

AIP Conference Proceedings

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Compton scattered x-rays can be generated using a configuration consisting of a single, ultra-intense laser pulse, and a shaped gas target. The gas target incorporates a hydrodynamically formed density spike, which nonlinearly scatters the incident pump radiation, to produce a counter-propagating electromagnetic wiggler. This self-generated wiggler field Compton scatters from electrons accelerated in the laser wakefield of the pump radiation. The nonlinear scattering mechanism in the density spike is examined theoretically and numerically in order to optimize the Compton scattered radiation. It is found that narrow-band x-rays are produced by moderate intensity pump radiation incident on the quarter-critical surface of the density spike, while high fluence, broadbandx-rays are produced by high intensity pump radiation reflected near the critical surface.

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Section: Introductionmentioning

confidence: 99%

A nonlinear plasma retroreflector for single pulse Compton backscattering

Palastro¹,

Gordon²,

Hafizi³

et al. 2016

AIP Conference Proceedings

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show abstract

“…A semiconductor technology that has been used widely recently is complementary metal oxide (CMOS) semiconductors [7][8][9][10][11][12][13]. Active pixel sensor (APS) CMOS provide high resolution even at high framing rates and, in association with scintillating screens, have been increasingly investigated for medical imaging applications [14]. Due to the renewed interest in calcium tungstate as a detector for the quest for dark matter in the universe [3,4,[15][16][17] or for custom and border control [4], this study aiming to contribute in the resolution properties of this compound.…”

Section: Introductionmentioning

confidence: 99%

Resolution Properties of a Calcium Tungstate (CaWO₄) Screen Coupled to a CMOS Imaging Detector

Koukou

Martini

Valais

et al. 2017

J. Phys.: Conf. Ser.

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Abstract. The aim of the current work was to assess the resolution properties of a calcium tungstate (CaWO 4 ) screen (screen coating thickness: 50.09 mg/cm 2 , actual thickness: 167.2 μm) coupled to a high resolution complementary metal oxide semiconductor (CMOS) digital imaging sensor. A 2.7x3.6 cm 2 CaWO 4 sample was extracted from an Agfa Curix universal screen and was coupled directly with the active area of the active pixel sensor (APS) CMOS sensor. Experiments were performed following the new IEC 62220-1-1:2015 International Standard, using an RQA-5 beam quality. Resolution was assessed in terms of the Modulation Transfer Function (MTF), using the slanted-edge method. The CaWO 4 /CMOS detector configuration was found with linear response, in the exposure range under investigation. The final MTF was obtained through averaging the oversampled edge spread function (ESF), using a custom-made software developed by our team, according to the IEC 62220-1-1:2015. Considering the renewed interest in calcium tungstate for various applications, along with the resolution results of this work, CaWO 4 could be also considered for use in X-ray imaging devices such as charged-coupled devices (CCD) and CMOS.

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Recent progress of phase-contrast imaging at Tsinghua Thomson-scattering X-ray source

Chi

Liu

et al. 2017

Nuclear Instruments and Methods in Physics Research Section B:

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X-ray phase-contrast imaging with an Inverse Compton Scattering source

Cited by 4 publications

References 6 publications

A nonlinear plasma retroreflector for single pulse Compton backscattering

A nonlinear plasma retroreflector for single pulse Compton backscattering

Resolution Properties of a Calcium Tungstate (CaWO₄) Screen Coupled to a CMOS Imaging Detector

Recent progress of phase-contrast imaging at Tsinghua Thomson-scattering X-ray source

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X-ray phase-contrast imaging with an Inverse Compton Scattering source

Cited by 4 publications

References 6 publications

A nonlinear plasma retroreflector for single pulse Compton backscattering

A nonlinear plasma retroreflector for single pulse Compton backscattering

Resolution Properties of a Calcium Tungstate (CaWO4) Screen Coupled to a CMOS Imaging Detector

Recent progress of phase-contrast imaging at Tsinghua Thomson-scattering X-ray source

Contact Info

Product

Resources

About

Resolution Properties of a Calcium Tungstate (CaWO₄) Screen Coupled to a CMOS Imaging Detector