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PARAMETRIC X-RAYS: READY FOR APPLICATION

PARAMETRIC X-RAYS: READY FOR APPLICATION. Alexander LOBKO Institute for Nuclear Problems, Belarus State University Minsk. IX Gomel School - July 200 7. Light sources. nano-science. http://www.lightsources.org/cms/?pid=1000166. Spectral brilliance of T- & x-ray sources.

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PARAMETRIC X-RAYS: READY FOR APPLICATION

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  1. PARAMETRIC X-RAYS:READY FOR APPLICATION Alexander LOBKO Institute for Nuclear Problems, Belarus State University Minsk IX GomelSchool - July 2007

  2. Light sources nano-science http://www.lightsources.org/cms/?pid=1000166

  3. Spectral brilliance of T- & x-ray sources There is a large gap between properties of common and accelerator-based x-ray sources X-rays: The First Hundred Years // Wiley 1996

  4. Typical size of a contemporary synchrotron

  5. Budget of the SOLEIL synchrotron (France) Construction • Investment…………….235 M€ • Operation………………..64 M€ • Salaries………………….150 M€ Total………………………….449 M€ Yearly………………………...53 M€ www.synchrotron-soleil.fr

  6. Synchrotron sources in the world About 40 sources in 20 countries http://www-als.lbl.gov/als/synchrotron_sources.html

  7. Comparison of some x-ray generation processes at accelerators V.G. Baryshevsky, I.D. Feranchuk // NIM 228 (1985) 490

  8. Parametric x-rays (PXR) Condition for the Cherenkov radiation emission V. Baryshevsky, I. Feranchuk, A. Ulyanenkov Parametric X–ray Radiation in Crystals: Theory, Experiment and Applications // Springer, 2006. – 176 p.

  9. PXR experiments in the World • Armenia – Erevan ErPI LINAC • Belarus – INP in collaborations with Tomsk & IHEP Protvino& Mainz, own experiments with non- relativistic electrons • Canada – Saskatchevan Accelerator Lab LINAC • Germany – Darmstadt S_DALINAC, Mainz MAMI Microtron, Rossendorf ELBE LINAC • Japan – Tokyo U. Synchrotron, Tohoku U. LINAC, Hiroshima U. LINAC, Kamigori Spring-8 Synchrotron, Kyoto U. LINAC, Hokkaido U. LINAC, Nihon U. LINAC • Russia – Tomsk SIRIUS Synchrotron, Dubna JINR Nuclotron, Belgorod U. in collaborations • Ukraine – Kharkov KPTI LINACs • USA – RPI LINAC, BNL Accelerator Facility LINAC, Naval Postgraduate School LINAC

  10. Main PXR features • it is quasi-monochromatic x-ray radiation • x-rays energy can be changed continuously by the crystal target rotation • it is directed and polarized x-ray radiation • x-rays energy does not depend on energy of incident charged particles • radiation angle can be as large as 180 arc degrees

  11. Applications of synchrotron radiation

  12. Soft X-Ray Imaging Methods:Soft x-ray imaging, photoelectron emission microscopy (PEEM), scanning transmission x-ray microscopy (STXM), full-field microscopy, x-ray diffraction imaging (XDI),x-ray tomography, computer-aided tomography (CAT). Problems: Cell biology Nano-magnetism Environmental science Soft matter, polymers The tunability of radiation is absolutely essential for the creation of contrast mechanisms.

  13. Soft X-Ray Spectroscopy Methods:Soft x-ray absorption spectroscopy (XAS), near-edge x-ray absorption fine structure (NEXAFS) spectroscopy, soft x-ray emission spectroscopy (SXES), resonant inelastic x-ray scattering (RIXS), x-ray magnetic circular dichroism (XMCD),x-ray photo-emission spectroscopy (XPS), Auger spectroscopy. Problems: Complex materials Magnetic materials Environmental science Catalysis The photonenergy tunabilityand its brilliance and polarisation for some applications are essential.

  14. Soft X-Ray Scattering Methods:Soft x-ray emission spectroscopy (SXES), inelastic x-ray scattering (IXS), resonant x-ray inelastic scattering (RIXS), speckle patterns, small-angle x-ray scattering (SAXS). Problems: Strongly correlated materials Magnetic materials Environmental science Catalysis The tunability of radiation and its brilliance for some applications are essential.

  15. Practical examples of PXR applications Nihon University, Japan enhanced contrast images EXAFS Rensselaer Polytechnic Institute, NY, USA

  16. PXR source based on the tabletop synchrotron Photon Production Laboratory Japan

  17. First observation of parametric rays in the microwave range exiting (slow-wave) grating step – 0,67 мм diffraction (feedback) grating step – 3 мм NIM A 483 (2002) 21–23; NIM A 507 (2003) 137–140

  18. Possible T-rays applications http://www.lightsources.org/cms/?pid=1000680

  19. Thank you for attention

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