The paper describes a new concept of visible pump/X-ray probe/slow detector experiments that could be performed at thirdgeneration synchrotron light sources. We propose a technique that would allow time resolution up to femtosecond capabilities to be recovered from a long (100 ps) X-ray probe pulse. The visible pump pulse must be as short as the desired time resolution. The principle of operati...

The detection in 10 bursts of an optical counterpart emission (i.e. during the prompt GRB phase) that is 10−104 brighter than the extrapolation of the burst spectrum to optical frequencies suggests a synchrotron self-Compton origin for the GRB emission, synchrotron producing the optical counterpart emission. In this model, the second upscattering of the burst photons yields a prompt GeV–TeV emi...

This issue brings together papers from the 6th International Conference on Synchrotron Radiation Instrumentation (SRI'97) held in Japan in August 1997. This is one of the major synchrotron radiation conferences, held every three years, and has so far published its proceedings in a variety of journals. Now that the synchrotron radiation community have a journal of their own it is only natural th...

Synchrotron radiation light is 1 of 4 artificial light sources, the others being electric light, X-ray, and laser. Phase-contrast imaging with hard X-ray has achieved wide application in many scientific fields, such as biomedicine and material science. This article compares the effectiveness of nanohydroxyapatite/collagen (nHAC) and autologous mesenchymal stem cell for the repair of defects in ...

Fermi observations of high-energy gamma-ray emission from GRB 080916C shows that its spectrum is consistent with the Band function from MeV to tens of GeV. Assuming one single emission mechanism dominates in the whole energy range, we show that this spectrum is consistent with synchrotron origin by shockaccelerated electrons. The simple electron inverse-Compton model and the hadronic model are ...

This paper reviews the research in nanomaterials conducted in our laboratory in the last decade using conventional and synchrotron radiation techniques. While preparative and conventional characterisation techniques are described, emphasis is placed on the analysis of nanomaterials using synchrotron radiation. Materials of primary interests are metal nanoparticles and semiconductor nanowires an...

The integration of the booster synchrotron control system to the SPring-8 control system finished successfully in January 1999. This integration allows us to operate the synchrotron, the beam transport line and the storage ring in a seamless fashion.