Cornell high-energy synchrotron source

X-ray Instrumentation. All experiments were performed at the Cornell High Energy Synchrotron Source (CHESS) operated at 5.8 GeV (Stations A-3, B and C-2). Monochromatic radiation was obtained with a Si (220) double crystal monochromator. In order to eliminate higher harmonics, 50% detunning was typically employed. ... 

Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland, UK and Cornell High Energy Synchrotron Source, Cornell University, Ithaca,NY 14853,USA. Emai l chris chem.gla. ac. uk... 

Courtesy of Cornell High Energy Synchrotron Source). 

Cornell High Energy Synchrotron Source, Cornell University, Ithaca, New York, USA... 

The EXAFS spectra were recorded at the Cornell High Energy Synchrotron Source, supported by NSF Grant DMR-78/267. Thanks are due to the donors of the Petroleum Research Fund for partial support of this research. 

FIGURE 7.19. Laue photograph of lysozyme, 100 msec photograph, with synchrotron radiation 0.2 - 2.0 A wavelength, taken at CHESS (Cornell High Energy Synchrotron Source). (Courtesy Edwin Westbrook). 

The transmission extended x-ray absorption fine structure (EXAFS) spectra were collected on the A-2, C-1, and C-2 stations of the Cornell High Energy Synchrotron Source (CHESS). Data reduction followed a standard procedure of pre-edge and post-edge background removal, extraction of the EXAFS oscillations taking the Fourler-transform of and finally applying an inverse transform... 

Because synchrotron light sources are expensive to build and operate, most are funded at the national level. In the U.S., five light sources are available to researchers the Advanced Photon Source (APS), Argonne National Laboratory [www.aps.anl.gov], the Advanced Light Source (AlS) Lawrence Berkley National Laboratory [www.als.lbl.gov], the National Synchrotron Light Source (NSLS) Brookhaven National Laboratory [www.nsls.bnl.gov], Stanford Synchrotron Research Laboratory (SSRL), Stanford University [www.ssrl.slac.stanford.edu], and the Macromolecular Diffraction Facility Cornell High Energy Synchrotron Source... 

Figure 3. Photon flux as a function of energy for the Cornell High Energy Synchrotron Source (CHESS) operated at various accelerating voltages. The topmost curve is the radiation profile from the 6-pole wiggler magnet. (Figure courtesy of the Laboratory for Nuclear Studies at Cornell University.)...

The platinxm-platinum distance in the three compounds isolated so far is 2.95 A. Both Lippard (22) and Mansy (23) have suggested that a similar reaction could occur with guanine, in the manner shown in Figure 9. It seemed that it should be possible to detect such a reaction with bases in DNA by looking for the Pt-Pt distance of 2.95 A with extended x-ray absorption fine structure (EXAFS) techniques. We have performed such experiments on the Cornell High Energy Synchrotron Source. 

This research was supported by NIH Grant CA-17367 to R.B., and NATO Grant 1809 awarded jointly to R.B. and N.H. We thank the administrative and technical staff of the Cornell High Energy Synchrotron Source (CHESS) for their enthusiastic assistance. We would like to thank Dr. Douglas M. Ho for helpful discussions. Finally, we would like to express our gratitude for the technical and computer software assistance provided to us by M. R. Antonio (M.S.U.) and V. Bakirtzis (Bell Labs). 

FIGURE 5.1.1 PVD vacuum systems utilized for thin film deposition. The chamber in (b) is mounted at the A2 station at the Cornell high-energy synchrotron source and allows realtime monitoring of the film morphology and sfructure hy in situ x-ray diffraction. (Headrick, R.L. et al., AIP Conf. Proc. (AlP, Melville, NY, 2004), 705, 1150, 2004.)... 

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