Journal Article

FZJ-2015-06638

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Tuning the instrument resolution using chopper and time of flight at the small-angle neutron scattering diffractometer KWS-2

Radulescu, A. (Corresponding author)FZJ* ; Szekely, N.FZJ* ; Polachowski, S.FZJ* ; Leyendecker, M.FZJ* ; Amann, M.FZJ* ; Buitenhuis, J.FZJ* ; Drochner, M.FZJ* ; Engels, R.FZJ* ; Hanslik, R.FZJ* ; Kemmerling, G.FZJ* ; Lindner, P. ; Papagiannopoulos, A. ; Pipich, V.FZJ* ; Willner, L.FZJ* ; Frielinghaus, H.FZJ* ; Richter, D.FZJ*

2015
Munksgaard Copenhagen

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Please use a persistent id in citations: http://hdl.handle.net/2128/31323  doi:10.1107/S1600576715019019

Abstract: Following demand from the user community regarding the possibility of improving the experimental resolution, the dedicated high-intensity/extended Q-range SANS diffractometer KWS-2 of the Jülich Centre for Neutron Science at the Heinz Maier-Leibnitz Center in Garching was equipped with a double-disc chopper with a variable opening slit window and time-of-flight (TOF) data acquisition option. The chopper used in concert with a dedicated high-intensity velocity selector enables the tuning at will of the wavelength resolution [Delta][lambda]/[lambda] within a broad range, from 20% (standard) down to 2%, in a convenient and safe manner following pre-planned or spontaneous decisions during the experiment. The new working mode is described in detail, and its efficiency is demonstrated on several standard samples with known properties and on a completely new crystallizable copolymer system, which were investigated using both the conventional (static) and TOF modes.

Keyword(s): Health and Life (1st) ; Health and Life (1st) ; Instrument and Method Development (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
2. Neutronenstreuung (Neutronenstreuung ; JCNS-1)
3. Zentralinstitut für Technologie (ZEA-1)
4. Zentralinstitut für Elektronik (ZEA-2)
5. Weiche Materie (ICS-3)

Research Program(s):

1. 6215 - Soft Matter, Health and Life Sciences (POF3-621) (POF3-621)
2. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
3. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. KWS-2: Small angle scattering diffractometer (NL3ao)

Appears in the scientific report 2015

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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