نتایج جستجو برای: x rays

تعداد نتایج: 646783  

Journal: :Cell 2014
Joseph M. Jez Robert E. Blankenship

Photosystem II uses metal ions to oxidize water to form O2. Two recent papers employ the new technique of serial femtosecond crystallography utilizing X-ray free-electron lasers and nanocrystals to obtain initial structures of intermediate states of photosystem II catalysis at the site of oxygen production.

Journal: :Physical review letters 2005
A L Cavalieri D M Fritz S H Lee P H Bucksbaum D A Reis J Rudati D M Mills P H Fuoss G B Stephenson C C Kao D P Siddons D P Lowney A G Macphee D Weinstein R W Falcone R Pahl J Als-Nielsen C Blome S Düsterer R Ischebeck H Schlarb H Schulte-Schrepping Th Tschentscher J Schneider O Hignette F Sette K Sokolowski-Tinten H N Chapman R W Lee T N Hansen O Synnergren J Larsson S Techert J Sheppard J S Wark M Bergh C Caleman G Huldt D van der Spoel N Timneanu J Hajdu R A Akre E Bong P Emma P Krejcik J Arthur S Brennan K J Gaffney A M Lindenberg K Luening J B Hastings

Linear-accelerator-based sources will revolutionize ultrafast x-ray science due to their unprecedented brightness and short pulse duration. However, time-resolved studies at the resolution of the x-ray pulse duration are hampered by the inability to precisely synchronize an external laser to the accelerator. At the Sub-Picosecond Pulse Source at the Stanford Linear-Accelerator Center we solved ...

Journal: :Acta Crystallographica 1949

Journal: :Microscopy and Microanalysis 2005

Journal: :Nuclear Physics B - Proceedings Supplements 1999

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