issue contents

Journal logoJOURNAL OF
ISSN: 1600-5775

September 1999 issue

Highlighted illustration

Cover illustration: Lead island on Si(111), see Schmidt, Slezak, Heun, Diaz, Blyth, Delaunay, Cocco, Prince, Bauer and Coreno, pages 957-963.

facility information


J. Synchrotron Rad. (1999). 6, 945-946
doi: 10.1107/S0909049599009772

research papers

J. Synchrotron Rad. (1999). 6, 947-952
doi: 10.1107/S0909049599003404
link to html
Single bunches of synchrotron radiation in the hard X-ray regime may be extracted with a shutter involving a rotating mirror. Nanosecond time-resolved Laue diffraction experiments are feasible even in the case of very short bunch-to-bunch distances.

J. Synchrotron Rad. (1999). 6, 953-956
doi: 10.1107/S0909049599009450
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Be refractive lenses reduce the divergence of an X-ray beam from >11 µrad to <3 µrad, with almost no losses (∼90% transmission). Al lenses provide similar collimation but lower (∼45%) transmission.

J. Synchrotron Rad. (1999). 6, 957-963
doi: 10.1107/S0909049599008092
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The optical layout of a soft X-ray photoemission microscopy beamline using a full-field microscope is described. Fresnel diffraction of the synchrotron light is a nano-scale system is observed.

J. Synchrotron Rad. (1999). 6, 964-972
doi: 10.1107/S0909049599008122
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The soft X-ray spectroscopy beamline installed at a bending-magnet source in the LNLS is presented. A technical description of the main elements is given and some selected commissioning results are shown.

J. Synchrotron Rad. (1999). 6, 973-978
doi: 10.1107/S0909049599005385
link to html
An experimental demonstration showing that a one-dimensional focus can be produced by using the principle of inclined diffraction from a perfect crystal is presented.

J. Synchrotron Rad. (1999). 6, 979-984
doi: 10.1107/S0909049599001934
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Demonstration of a focusing multilayer analyser for local diffraction studies in bulk materials.

J. Synchrotron Rad. (1999). 6, 985-994
doi: 10.1107/S0909049599007657
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A prototype of a novel pixel detector based on a gaseous single-photon counter is presented. Its suitability for advanced biological diffraction applications is demonstrated by a variety of test measurements at a synchrotron radiation source.

J. Synchrotron Rad. (1999). 6, 995-1006
doi: 10.1107/S0909049599006342
link to html
Daresbury Laue software and ESRF CCD yielded highly complete and redundant data to 2.3 Å from a single crystal of the enzyme hydroxymethylbilane synthase (wild type, active form). Detector dynamic range capability and Laue geometry are analysed.

J. Synchrotron Rad. (1999). 6, 1007-1015
doi: 10.1107/S0909049599005166
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Analysis of 20 K synchrotron single-crystal intensity data indicates a large enhancement of the molecular dipole moment in the solid state. The strategy for area-detector data collection with cryostat-cooled samples is discussed in detail.

J. Synchrotron Rad. (1999). 6, 1016-1020
doi: 10.1107/S0909049599004616
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Crystals of the serine kinase domain of titin grew as very thin plates. Crystallization conditions, mounting and flash freezing of the crystals were optimized to collect suitable X-ray data from a synchrotron beamline.

J. Synchrotron Rad. (1999). 6, 1021-1030
doi: 10.1107/S0909049599004537
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Microdiffraction experiments reveal the existence of several separated structural zones in keratinous tissues.

J. Synchrotron Rad. (1999). 6, 1031-1034
doi: 10.1107/S0909049599007463
link to html
Zimm plots in the rodlike approximation indicate that repulsive interactions still affect the X-ray scattering patterns of dilute DNA solutions at low ionic strength at resolutions as high as 5–8 nm.

J. Synchrotron Rad. (1999). 6, 1035-1043
doi: 10.1107/S0909049599007840
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The structure of a crystalline mesogenic diol has been determined from high-resolution synchrotron powder-diffraction data. The disordered structure of another long-chain diol has been analyzed with XRD, IR spectroscopy and molecular simulation, revealing the character of the disorder. Both structures are lamellar-packed and layered.

J. Synchrotron Rad. (1999). 6, 1044-1050
doi: 10.1107/S0909049599004513
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Sequential acquisition of energy points using energy-dispersive optics is shown to be a suitable technique for time-resolved X-ray absorption studies in the sub-second range, and is complementary to the traditional parallel data-acquisition method.

J. Synchrotron Rad. (1999). 6, 1051-1058
doi: 10.1107/S0909049599005634
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The local structures and mean-square relative displacements were determined in tridymite, quartz, stishovite, quartz-type GeO2 and rutile-type GeO2.

J. Synchrotron Rad. (1999). 6, 1059-1064
doi: 10.1107/S0909049599008444
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The feasibility of heavy-element-sensitive tomography using synchrotron radiation on centimetre-scale samples containing uranium was proven. This was performed using a detector based on a CCD camera and a scintillation screen.

short communications

J. Synchrotron Rad. (1999). 6, 1065-1066
doi: 10.1107/S090904959900268X
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The classical Hanbury Brown–Twiss experiment has been conducted with hard X-ray synchrotron radiation at the Advanced Photon Source. The measured spatial coherence area of the X-ray beam is in good agreement with the prediction based on the vertical positron beam size.
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