A multipurpose instrument for time-resolved ultra-small-angle and coherent X-ray scattering.
J Appl Crystallogr
; 51(Pt 6): 1511-1524, 2018 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-30546286
ABSTRACT
This article presents the main technical features and performance of the upgraded beamline ID02 at the ESRF. The beamline combines different small-angle X-ray scattering techniques in one unique instrument, enabling static and kinetic investigations from ångström to micrometre size scales and time resolution down to the sub-millisecond range. The main component of the instrument is an evacuated detector tube of length 34â
m and diameter 2â
m. Several different detectors are housed inside a motorized wagon that travels along a rail system, allowing an automated change of the sample-detector distance from about 1 to 31â
m as well as selection of the desired detector. For optional combined wide-angle scattering measurements, a wide-angle detector is installed at the entrance cone of the tube. A scattering vector (of magnitude q) range of 0.002 ≤ q ≤ 50â
nm-1 is covered with two sample-detector distances and a single-beam setting for an X-ray wavelength of 1â
Å. In the high-resolution mode, two-dimensional ultra-small-angle X-ray scattering patterns down to q < 0.001â
nm-1 can be recorded, and the resulting one-dimensional profiles have superior quality as compared to those measured with an optimized Bonse-Hart instrument. In the highest-resolution mode, the beam is nearly coherent, thereby permitting multispeckle ultra-small-angle X-ray photon correlation spectroscopy measurements. The main applications of the instrument include the elucidation of static and transient hierarchical structures, and nonequilibrium dynamics in soft matter and biophysical systems.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Appl Crystallogr
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
França