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Fresnel zone plate telescopes for X-ray imaging I: experiments with a quasi-parallel beam

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Abstract

Combination of Fresnel Zone Plates (FZP) can make an excellent telescope for imaging in X-rays. We present here the results of our experiments with several pairs of tungsten made Fresnel Zone plates in presence of an X-ray source kept at a distance of about 45 ft. The quasi-parallel beam allowed us to study sources placed on the axis as well as off the axis of the telescope. We present theoretical study of the fringe patterns produced by the zone plates in presence of a quasi-parallel source. We compare the patterns obtained from experiments with those obtained by our Monte-Carlo simulations. The images are also reconstructed by deconvolution from both the patterns. We compare the performance of such a telescope with other X-ray imaging devices used in space-astronomy.

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Acknowledgements

The authors are thankful to Dr. V. Girish and Prof. A. R. Rao for collaborative work in RT2 related experiments and Dr. U. Desai for many helpful suggestions.

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Authors and Affiliations

  1. S.N. Bose National Centre for Basic Sciences, JD Block, Salt Lake, 700097, Kolkata, India

    Sandip K. Chakrabarti

  2. Indian Centre for Space Physics, 43 Chalantika, Garia Station Rd., 700084, Kolkata, India

    Sandip K. Chakrabarti, S. Palit, D. Debnath, A. Nandi, V. Yadav & Ritabrata Sarkar

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  1. Sandip K. Chakrabarti
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  2. S. Palit
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  3. D. Debnath
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  4. A. Nandi
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  5. V. Yadav
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  6. Ritabrata Sarkar
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Corresponding author

Correspondence to Sandip K. Chakrabarti.

Additional information

This experiment was made possible in part by a grant from Indian Space Research Organization to ICSP. SP and DD thank CSIR/NET scholarships which supported their research work.

A. Nandi and V. Yadav were posted at ICSP by Space Science Division, ISRO Head Quarters.

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Chakrabarti, S.K., Palit, S., Debnath, D. et al. Fresnel zone plate telescopes for X-ray imaging I: experiments with a quasi-parallel beam. Exp Astron 24, 109–126 (2009). https://doi.org/10.1007/s10686-009-9144-y

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  • DOI: https://doi.org/10.1007/s10686-009-9144-y

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