Coherent X-ray mirage: discovery and possible applications

Pikuz, T. A.; Faenov, A. Ya.; Magnitskiy, Sergey A; Nagorskiy, Nikolay M; Tanaka, Momoko; Ishino, Masahiko; Nishikino, Masaharu; Fukuda, Yuji; Kando, M.; Kato, Yoshiaki; Kawachi, Tetsuya

doi:10.1017/hpl.2014.14

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…Recently, LiF crystal and film detectors have been successfully used for high-performance soft x-ray conventional and phase-contrast imaging [16][17][18][19][20][21][22] of different nanofoils or biological objects. They have also started to be widely used for characterization intensity profiles or focusing properties of x-ray laser or high-order harmonic beams [23][24][25][26][27][28][29][30] . Dislocations, point defect clusters and cavities in crystals irradiated by neutrons have been investigated already for many decades [31,32] , but only recently we proposed to use LiF crystals as highperformance neutron imaging detectors [33][34][35][36] .…”

Section: Introductionmentioning

confidence: 99%

Using LiF crystals for high-performance neutron imaging with micron-scale resolution

Faenov

Matsubayashi

Pikuz

et al. 2015

High Pow Laser Sci Eng

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This paper describes an overview of our recent discovery -clear demonstration that LiF crystals can be efficiently used as a high-performance neutron imaging detector based on optically stimulated luminescence of color centers generated by neutron irradiation. It is shown that the neutron images we have obtained are almost free from granular noise, have a spatial resolution of ∼5.4 µm and a linear response with a dynamic range of at least 10 3 . The high contrast and good sensitivity of LiF crystals allow us to distinguish two holes with less than 2% transmittance difference. We propose to use such detectors in areas where high spatial resolution with high image gradation resolution is needed, including diagnostics of different plasma sources such as laser and z-pinch produced plasmas.

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Section: Introductionmentioning

confidence: 99%

Using LiF crystals for high-performance neutron imaging with micron-scale resolution

Faenov

Matsubayashi

Pikuz

et al. 2015

High Pow Laser Sci Eng

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“…Laser-driven ultrafast X-ray sources are widely used for diagnostic radiography in high-energy density physics, X-ray scattering, inner shell photoionization [1,2] , ultrafast biomedical imaging [3,4] , the probing of lattice dynamics [5] , and basic research in radiation biology [6] . Developing a bright laser-driven X-ray source with high resolution is necessary for the previously mentioned applications.…”

mentioning

confidence: 99%

Radiography of a Kα X-ray source generated through ultrahigh picosecond laser–nanostructure target interaction

Wang¹,

Zhao²,

He³

et al. 2015

中国光学快报

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Laser-driven ultrafast X-ray sources are widely used for diagnostic radiography. However, there is a large divergence of fast electrons when they are generated by an intense short-pulse laser interacting with a foil target. We design a nanowire array target to achieve a more compact point X-ray source. Fast electrons are confined and guided by the nanowire array structure in order to generate a K α source with a small spot size. In our work, the smallest measured source size is comparable to the laser spot size, while the conversion efficiency can reach 2.4 × 10 −4. OCIS codes: 100.0100, 340.0340.

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X-ray coherent mirage: Generation of phase – matched coherent point source in plasma media by propagated X-ray laser seeded beam

Faenov

Pikuz²,

Magnitskiy

et al. 2016

Laser Part. Beams

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The overview of the recent results for discovery and investigations of a very exotic phenomenon – optical mirage in the X-ray spectral range – is presented. It was found that the mirage could be created in the form of coherent virtual point source, emerging in the vicinity of the second plasma in two-stage oscillator-amplifier X-ray laser. The X-ray source-mirage, rigidly phased with the initial radiation of generator, occurs only when amplification takes place in the amplifier plasma and leads to the appearance of the interference pattern in the form of concentric rings in the spatial profile of the output X-ray laser beam. The equation describing the emergence of X-ray mirage was found, numerical solution of which shows that its formation is similar to that of the optical mirages observed at propagation of light rays through an inhomogeneously heated air. Obtained results have already demonstrated novel comprehension into the physical nature of amplification of X-ray radiation, opening additional opportunities for X-ray interferometry, holography, and other applications, which require multiple rigidly phased sources of coherent radiation.

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Coherent X-ray mirage: discovery and possible applications

Cited by 6 publications

References 13 publications

Using LiF crystals for high-performance neutron imaging with micron-scale resolution

Using LiF crystals for high-performance neutron imaging with micron-scale resolution

Radiography of a Kα X-ray source generated through ultrahigh picosecond laser–nanostructure target interaction

X-ray coherent mirage: Generation of phase – matched coherent point source in plasma media by propagated X-ray laser seeded beam

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