کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1824271 1027332 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Large scales–long times: Adding high energy resolution to SANS
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
Large scales–long times: Adding high energy resolution to SANS
چکیده انگلیسی

The Neutron Spin Echo (NSE) variant MIEZE (Modulation of IntEnsity by Zero Effort), where all beam manipulations are performed before the sample position, offers the possibility to perform low background SANS measurements in strong magnetic fields and depolarising samples. However, MIEZE is sensitive to differences ΔLΔL in the length of neutron flight paths through the instrument and the sample. In this article, we discuss the major influence of ΔLΔL on contrast reduction of MIEZE measurements and its minimisation. Finally we present a design case for enhancing a small-angle neutron scattering (SANS) instrument at the planned European Spallation Source (ESS) in Lund, Sweden, using a combination of MIEZE and other TOF options, such as TISANE offering time windows from ns to minutes. The proposed instrument would allow obtaining an excellent energy- and Q  -resolution straightforward to μsμs for 0.01 Å−1, even in magnetic fields, depolarising samples as they occur in soft matter and magnetism while keeping the instrumental effort and costs low.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 654, Issue 1, 21 October 2011, Pages 394–398
نویسندگان
, , , , ,