A new x-ray interferometer

Kitamoto, Shunji; Murakami, Hiroshi; Takei, Dai; Sakata, Kazuya; Yoshida, Yuki

doi:10.1117/12.894244

Cited by 2 publications

(2 citation statements)

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“…A multiple spacecraft imaging system (formation flight of satellites) is needed. Kitamoto et al(2011) [14] proposed a simple X-ray interferometer using multi-layer beam splitter with a moderate band pass, which makes the length of the optics to be short and can be constructed on one satellite. The simple interferometer is not an imager but can measure sizes of the objects.…”

Section: New X-ray Interferometermentioning

confidence: 99%

Estimation of observation possibility of the x-ray interferometer with an x-ray beam-splitter

et al. 2014

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We report our recent activities for a development of a new X-ray interferometer with a beam splitter and discuss a possible observation of some celestial objects. The X-ray interferometer consists of two flat mirrors and one flat beam splitter. Samples of the beam splitter and the mirrors have been designed and fabricated. We measured the reflectivity of the mirrors and the reflectivity and transmission of the beam splitters with a synchrotron source at KEK-PF. Obtained results of the mirrors are roughly consistent with the design values, but the reflectivity of the beam splitter is roughly half of the design value. Using these measured values, we estimated required area and observation-time to obtain fringe signals of celestial objects. We concluded that a broad-band interferometer using non-dispersive high spectral resolution detector, such as the micro-calorimeter array, is essential for the future development.

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Section: New X-ray Interferometermentioning

confidence: 99%

Estimation of observation possibility of the x-ray interferometer with an x-ray beam-splitter

et al. 2014

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“…Several alternative designs of x-ray interferometry systems that considerably reduce the required size of the system, in particular the distance between the optics and detectors, have been proposed (e.g., an interferometry system with a slatted mirror 7 or with a multi-layer beam splitter 8 , 9 ). A system with a slatted mirror is also discussed in a future design concept of an x-ray interferometer in Voyage 2050 (the next planning cycle of the ESA Science Programme) 10 .…”

Section: Introductionmentioning

confidence: 99%

Multi-image x-ray interferometer module: I. Design concept and proof-of-concept experiments with fine-pitch slits

Asakura

Hayashida

Kawabata³

et al. 2023

J. Astron. Telesc. Instrum. Syst.

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.We propose an x-ray imaging system, multi-image x-ray interferometer module (MIXIM), with which a very high angular resolution can be achieved even with a small system size. MIXIM is composed of equally spaced multiple slits and an x-ray detector, and its angular resolution is inversely proportional to the distance between them. Here, we report our evaluation experiments of MIXIM with a newly adopted CMOS sensor with a high spatial resolution of 2.5 μm. Our previous experiments with a prototype MIXIM were limited to one-dimensional imaging, and more importantly, the achieved angular resolution was only ∼1 ″ , severely constrained due to the spatial resolution of the adopted sensor with a pixel size of 4.25 μm. By contrast, one-dimensional images obtained in this experiment had a higher angular resolution of 0.5″ when a configured system size was only ∼1 m, which demonstrates that MIXIM can simultaneously realize a high angular resolution and compact size. We also successfully obtained a two-dimensional profile of an x-ray beam for the first time for MIXIM by introducing a periodic pinhole mask. The highest angular resolution achieved in our experiments is smaller than 0.1″ with a mask-sensor distance of 866.5 cm, which shows the high scalability of MIXIM.

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A new x-ray interferometer

Cited by 2 publications

References 3 publications

Estimation of observation possibility of the x-ray interferometer with an x-ray beam-splitter

Estimation of observation possibility of the x-ray interferometer with an x-ray beam-splitter

Multi-image x-ray interferometer module: I. Design concept and proof-of-concept experiments with fine-pitch slits

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