Zobrazeno 1 - 10
of 313
pro vyhledávání: '"Doak, R."'
Autor:
Doak, R. Bruce
A bent-crystal mirror has been used to focus an atomic helium beam. The mirror is made from gold deposited onto a mica substrate to form a thin film (~5000 {\AA} thick) of large single crystal domains (domain size ~4000 {\AA} ). The mica sheet is the
Externí odkaz:
http://arxiv.org/abs/2201.06201
Autor:
Kovacs, Gabriela Nass, Colletier, Jacques-Philippe, Grünbein, Marie, Yang, Yang, Stensitzki, Till, Batyuk, Alexander, Carbajo, Sergio, Doak, R, Ehrenberg, David, Foucar, Lutz, Gasper, Raphael, Gorel, Alexander, Hilpert, Mario, Kloos, Marco, Koglin, Jason, Reinstein, Jochen, Roome, Christopher, Schlesinger, Ramona, Seaberg, Matthew, Shoeman, Robert, Stricker, Miriam, Boutet, Sébastien, Haacke, Stefan, Heberle, Joachim, Heyne, Karsten, Domratcheva, Tatiana, Barends, Thomas, Schlichting, Ilme
Bacteriorhodopsin (bR) is a light-driven proton pump. We use time-resolved crystallography at an X-ray free-electron laser to follow the structural changes in multiphoton-excited bR from 250 femtoseconds to 10 picoseconds. Quantum chemistry and ultra
Externí odkaz:
http://arxiv.org/abs/1905.09002
Akademický článek
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We have developed a liquid jet injector system that can be used for hydrated sample delivery at X-ray Free Electron Laser (XFEL) sources and 3rd generation synchrotron sources. The injector is based on the Gas Dynamic Virtual Nozzle (GDVN), which gen
Externí odkaz:
http://arxiv.org/abs/1105.2104
Autor:
Schmidt, K. E., Spence, J. C. H., Weierstall, U., Kirian, R., Wang, X., Starodub, D., Chapman, H. N., Howells, M. R., Doak, R. B.
Publikováno v:
Phys. Rev. Lett. 101, 115507 (2008)
A method is proposed for obtaining three simultaneous projections of a target from a single radiation pulse, which also allows the relative orientation of successive targets to be determined. The method has application to femtosecond X-ray diffractio
Externí odkaz:
http://arxiv.org/abs/0806.1555
As shown by Ganan-Calvo and co-workers, a free liquid jet can be compressed in iameter through gas-dynamic forces exerted by a co-flowing gas, obviating the need for a solid nozzle to form a microscopic liquid jet and thereby alleviating the clogging
Externí odkaz:
http://arxiv.org/abs/0803.4181
Autor:
Shapiro, D. A., DePonte, D., Doak, R. B., Fromme, P., Hembree, G., Hunter, M., Marchesini, S., Schmidt, K., Starodub, D., Weierstall, U., Chapman, H., Spence, J.
We demonstrate that powder diffraction data can be collected from sub-micron crystals of a mbrane protein with nearly two orders of magnitude more atoms than the molecules commonly used for powder diffraction. The crystals of photosystem-1 protein we
Externí odkaz:
http://arxiv.org/abs/0803.4027
Autor:
Starodub, D., Rez, P., Hembree, G., Howells, M., Shapiro, D., Chapman, H. N., Fromme, P., Schmidt, K., Weierstall, U., Doak, R. B., Spence, J. C. H.
The resolution of X-ray diffraction microscopy is limited by the maximum dose that can be delivered prior to sample damage. In the proposed Serial Crystallography method, the damage problem is addressed by distributing the total dose over many identi
Externí odkaz:
http://arxiv.org/abs/0706.3427
Autor:
Weierstall, U., Doak, R. B., Spence, J. C. H., Starodub, D., Shapiro, D., Kennedy, P., Warner, J., Hembree, G. G., Fromme, P., Chapman, H.
Serial diffraction of proteins requires an injection method to deliver protein molecules - preferably uncharged, fully hydrated, spatially oriented, and with high flux - into the crossed beams of an alignment laser and a focused probe beam of electro
Externí odkaz:
http://arxiv.org/abs/physics/0701129
The diatomic linear chain of masses coupled by harmonic springs is a textboook model for vibrational normal modes (phonons) in crystals. In addition to propagating acoustic and optic branches, this model is known to support a ``gap mode'' localized a
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908199