Anatoly Snigirev

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Anatoly Snigirev

Anatoly Snigirev ( French Anatoly Sniguirev , Russian Анатолий Александрович Снигирев , transcribed Anatoly Alexandrovich Snigirev ; born March 19, 1957 in Arkhangelsk ) is a Russian - French physicist in the field of experimental X-ray optics . Snigirev and his colleagues were the first research group to realize refractive X-ray lenses .

Career

With a doctoral thesis on the dynamic theory of X-ray diffraction on crystals , Snigirev received his doctorate in 1986 at the Institute of Solid State Physics of the Russian Academy of Sciences in Chernogolovka . From 1986 to 1993 he headed the crystal optics group at the Institute for Microelectronic Technology in Chernogolowka. During this time he researched X-ray diffraction on silicon microstructures, which ultimately led to the development of so-called Bragg Fresnel optics for focusing X-rays.

In 1990 he received a grant from the Alexander von Humboldt Foundation , which allowed him to spend one year researching at the University of Dortmund with Ulrich Bonse .

From 1993 to 2015 Snigirev worked at the European synchrotron radiation source ESRF in Grenoble , France , where he performed most of his scientific work. Since 2015 he has been head of the X-ray Optics Laboratory at the Baltic Federal University in Kaliningrad .

Snigirev is married to the physicist Irina Snigireva, who is a co-author in many of his publications.

Services

X-ray refractive lenses

In an article in the journal Nature Snigirev 1996, together with co-authors of the ESRF , the Kurchatov Institute and the RWTH Aachen experimental results ago that the successful focusing hard X-rays by means of breaking (refractive) lens demonstrated. This result was the first experimental refutation of Wilhelm Conrad Röntgen 's thesis, after his first experiments with the rays he had discovered, almost exactly 100 years earlier, that X-rays could not be collected with lenses.

Snigirev's results were preceded by suggestions from other groups for the construction of refractive X-ray lenses as well as a discussion in the specialist literature about whether refractive X-ray lenses could function properly at all - an opinion that well-known X-ray opticians had contradicted, sometimes virulent.

In the following years, Snigirev played a key role in the further development of the refractive X-ray lens and the establishment of its use, initially in the improvement of spherical cylinder lenses to parabolic, rotationally symmetrical lenses without spherical aberrations and in the first demonstrations of the applicability as an objective in an X-ray microscope, later in researching various Materials for lens manufacture and the construction of beam guidance optics using refractive lenses.

X-ray phase contrast

In 1995, Snigirev, with his wife and colleagues from Russia, published an article showing X-ray images of objects too small and light to be visible in ordinary absorption contrast. In the experimental images that were taken at the then new synchrotron radiation source ESRF , the edges and interfaces of the objects were clearly visible. In their article, the authors also provided the explanation for the phenomenon, namely Fresnel diffraction of the partially coherent X-rays from the synchrotron source on the observed objects. In their article, the authors referred to the newly discovered technique as "X-ray phase contrast"; this term has since become common for all X-ray techniques that are based on the refraction or diffraction of radiation. To distinguish it from other X-ray phase contrast methods, the technique described by Snigirev is often referred to as propagation-based phase contrast or inline phase contrast .

Following the discovery, Snigirev and his group and collaboration partners made inline phase contrast technology usable for applications in imaging processes with synchrotron radiation, in particular microtomography.

X-ray holography, microscopy and interferometry

Around the year 2000, Snigirev's work group at ESRF showed that microscopic and interferometric X-ray images could be recorded using zone plates as lenses or beam splitters for X-rays.

In 2009, Snigirev presented an X-ray interferometer based on the principle of the refractive X-ray lens.

Awards

For the development of the refractive X-ray lens, Snigirev and the co-authors of his article in Nature from 1996 received the Synchrotron Radiation Innovation Prize of the Helmholtz Center Berlin, which has been awarded annually since 2001 (until 2008: BESSY Innovation Prize).

Publications

The literature and citation database Web of Science identifies Anatoly Snigirev as the author or co-author of over 300 scientific articles with an h-index of 45.

Selected specialist articles

  1. ↑ A. Snigirev, V. Kohn, I. Snigireva, B. Lengeler: A compound refractive lens for focusing high-energy X-rays . In: Nature . Vol. 384, No. 6604 , 1996, pp. 49-51 , doi : 10.1038 / 384049a0 .
  2. ↑ B. Lengeler, CG Schroer, M. Richwin, J. Tümmler, M. Drakopoulos, A. Snigirev, I. Snigireva: A microscope for hard x rays based on parabolic compound refractive lenses . In: Applied Physics Letters . Vol. 74, No. 26 , 1999, pp. 3924-3926 , doi : 10.1063 / 1.124225 .
  3. ↑ B. Lengeler, C. Schroer, J. Tümmler, B. Benner, M. Richwin, A. Snigirev, I. Snigireva, M. Drakopoulos: Imaging by parabolic refractive lenses in the hard X-ray range . In: Journal of Synchrotron Radiation . Vol. 6, 1999, pp. 1153-1167 , doi : 10.1107 / S0909049599009747 .
  4. ↑ CG Schroer, M. Kuhlmann, B. Lengeler, TF Günzler, O. Kurapova, B. Benner, C. Rau, AS Simionovici: Beryllium parabolic refractive x-ray lenses . In: Proceedings of SPIE . Vol. 4783, 2002, pp. 10-18 , doi : 10.1117 / 12.451013 .
  5. ↑ A. Snigirev, I. Snigireva, M. Di Michiel, V. Honkimäki, M. Grigoriev, V. Nazmov, E. Reznikova, J. Mohr, V. Saile: Sub-micron focusing of high energy X-rays with Ni refractive lenses . In: Proceedings of SPIE . Vol. 5539, 2004, pp. 244-250 , doi : 10.1117 / 12.564545 .
  6. ↑ GBM Vaughan, JP Wright, A. Bytchkov, M. Rossat, H. Gleyzolle, I. Snigireva, A. Snigirev: X-ray transfocators: focusing devices based on compound refractive lenses . In: Journal of Synchrotron Radiation . Vol. 18, No. 2 , 2011, p. 125-133 , doi : 10.1107 / S0909049510044365 .
  7. ^ A. Snigirev, I. Snigireva, V. Kohn, S. Kuznetsov, I. Schelokov: On the possibilities of x-ray phase contrast microimaging by coherent high-energy synchrotron radiation . In: Review of Scientific Instruments . Vol. 66, No. 12 , 1995, p. 5486-5492 , doi : 10.1063 / 1.1146073 .
  8. ↑ C. Raven, A. Snigirev, I. Snigireva, P. Spanne, A. Souvorov, V. Kohn: Phase-contrast microtomography with coherent high-energy synchrotron x rays . In: Applied Physics Letters . Vol. 69, No. 13 , 1996, pp. 1826-1828 , doi : 10.1063 / 1.117446 .
  9. ^ P. Spanne, C. Raven, I. Snigireva, A. Snigirev: In-line holography and phase-contrast microtomography with high energy x-rays . In: Physics in Medicine and Biology . Vol. 44, No. 3 , 1999, p. 741-749 , doi : 10.1088 / 0031-9155 / 44/3/016 .
  10. ↑ TE Gureyev, C. Raven, A. Snigirev, I. Snigireva, SW Wilkins: Hard x-ray quantitative non-interferometric phase-contrast microscopy . In: Journal of Physics D: Applied Physics . Vol. 32, No. 5 , 1999, p. 563-567 , doi : 10.1088 / 0022-3727 / 32/5/010 .
  11. ^ A. Koch, C. Raven, P. Spanne, A. Snigirev: X-ray imaging with submicrometer resolution employing transparent luminescent screens . In: Journal of the Optical Society of America A . Vol. 15, No. 7 , 1998, pp. 1940–1951 , doi : 10.1364 / JOSAA.15.001940 .
  12. ↑ W. Leitenberger, T. Weitkamp, ​​M. Drakopoulos, I. Snigireva, A. Snigirev: Microscopic imaging and holography with hard X-rays using Fresnel zone plates . In: Optics Communications . Vol. 180, No. 4-6 , 2000, pp. 233-238 , doi : 10.1016 / S0030-4018 (00) 00710-0 .
  13. ↑ W. Leitenberger, SM Kuznetsov, A. Snigirev: Interferometric measurements with hard X-rays using a double slit . In: Optics Communications . Vol. 191, No. 1-2 , 2001, pp. 91-96 , doi : 10.1016 / S0030-4018 (01) 01104-X .
  14. ^ W. Leitenberger, A. Snigirev: Microscopic imaging with high energy x-rays by Fourier transform holography . In: Journal of Applied Physics . Vol. 90, No. 2 , 2001, p. 538-544 , doi : 10.1063 / 1.1378810 .
  15. ↑ A. Snigirev, I. Snigireva, V. Kohn, V. Yunkin, S. Kuznetsov, MB Grigoriev, T. Roth, G. Vaughan, C. Detlefs: X-Ray Nanointerferometer Based on Si Refractive Bilenses . In: Physical Review Letters . Vol. 103, 2009, pp. 064801 , doi : 10.1103 / PhysRevLett.103.064801 .

Individual evidence

  1. ↑ a b Curriculum vitae: SNIGIREV Anatoly. (PDF; 31 KB) In: kantiana.ru. Baltic Federal University of Immanuel Kant , accessed on August 24, 2019 .
  2. ↑ Anatoly Snigirev. (PDF; 85 kB) Helmholtz Center Berlin , archived from the original on April 13, 2014 ; accessed on August 24, 2019 (English, short biography).
  3. ↑ A. Snigirev. ResearchGate , accessed on August 14, 2013 .
  4. ↑ a b Malcolm W. Browne: Physicists Invent Lens for Focusing X-Rays. In: The New York Times . November 19, 1996, accessed February 9, 2017 .
  5. ^ WC Roentgen : A new kind of rays . 5th edition. Stahelsche KB Court and University Book and Art Dealer, Würzburg 1896, p.  8 .
  6. ^ S. Suehiro, H. Miyaji, H. Hayashi: Refractive lens for X-ray focus . In: Nature . Vol. 352, No. 6334 , 1991, pp. 385-386 , doi : 10.1038 / 352385c0 .
  7. ↑ BX Yang: Fresnel and refractive lenses for X-rays . In: Nuclear Instruments and Methods in Physics Research Section A . Vol. 328, No. 3 , 1993, p. 578-587 , doi : 10.1016 / 0168-9002 (93) 90678-B .
  8. ^ AG Michette : No X-Ray Lens . In: Nature . Vol. 353, No.  6344 , 1991, pp. 510 , doi : 10.1038 / 353510b0 .
  9. ^ R. Fitzgerald: Phase-sensitive X-ray imaging . In: Physics Today . Vol. 53, No. 7 , 2000, pp. 23-26 , doi : 10.1063 / 1.1292471 .
  10. ^ Prize-Winners of the Innovation Award on Synchrotron Radiation. (PDF file) Helmholtz-Zentrum Berlin , accessed on March 29, 2018 (English, overview of the award winners of the Synchrotron Radiation Innovation Award since 2001).
  11. ^ Web of Science. Thomson Reuters , accessed on March 2, 2020 (English, search criteria "AUTHOR: (snigirev a *) AND TOPIC: (x-ray * or synchrotron *)").
personal data
SURNAME Snigirev, Anatoly
ALTERNATIVE NAMES Sniguirev, Anatoly; Snigirew, Anatoly Alexandrovich; Снигирев, Анатолий Александрович (Russian)
BRIEF DESCRIPTION Russian-French physicist
DATE OF BIRTH March 19, 1957
PLACE OF BIRTH Arkhangelsk