Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Tuning the instrument resolution using chopper and time of flight at the small-angle neutron scattering diffractometer KWS-2
Δημιουργός/Συγγραφέας:	Radulescu A. Székely N.K. Polachowski S. Leyendecker M. Amann M. Buitenhuis J. Drochner M. Engels R. Hanslik R. Kemmerling G. Lindner P. [EL] Παπαγιαννόπουλος, Αριστείδης[EN] Papagiannopoulos, Aristeidis Pipich V. Willner L. Frielinghaus H. Richter D.
Εκδότης:	International Union of Crystallography
Ημερομηνία:	2015
Γλώσσα:	Αγγλικά
ISSN:	0021-8898
DOI:	10.1107/S1600576715019019
Περίληψη:	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 Δλ/λ 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.
Τίτλος πηγής δημοσίευσης:	Journal of Applied Crystallography
Τόμος/Κεφάλαιο:	48
Σελίδες:	1849-1859
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	small-angle neutron scattering (SANS) time of flight wavelength spread
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2015 International Union of Crystallography.
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Hybrid Gold, Green
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο