Tests of modulated intensity small angle scattering in time of flight mode

Small-angle scattering methods have become routine techniques for the structural characterization of macromolecules and macromolecular assemblies like polymers, (block) copolymers or micelles in the spatial range from a few to hundreds of nanometres. Neutrons are valuable scattering probes, because they offer freedom with respect to scattering length density contrast and isotopic labelling of samples. In order to gain maximum benefit from the allotted experiment time, the instrumental setup must be optimized in terms of statistics of scattered intensity, resolution and accessible range in momentum transferQ. The new small-angle neutron scattering instrument V16/VSANS at the Helmholtz-Zentrum in Berlin, Germany, augments neutron guide collimation and pinhole optics with time-of-flight data recording and flexible chopper configuration. Thus, the availableQrange and the respective instrumental resolution in the intermediate and high momentum transfer regions can be adjusted and balanced to the individual experimental requirements. This renders V16/VSANS a flexible and versatile instrument for soft-matter research.

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The time-of-flight small-angle scattering spectrometer SAN at the KENS pulsed cold neutron source

Journal of Applied Crystallography ◽

10.1107/s0021889886089513 ◽

1986 ◽

Vol 19 (4) ◽

pp. 229-242 ◽

Cited By ~ 33

Author(s):

Y. Ishikawa ◽

M. Furusaka ◽

N. Niimura ◽

M. Arai ◽

K. Hasegawa

Keyword(s):

Neutron Source ◽

Small Angle ◽

Cold Neutron ◽

Time Of Flight ◽

Small Angle Scattering ◽

Angle Scattering ◽

Cold Neutron Source

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Time-of-flight small-angle scattering spectrometers on pulsed neutron sources

Makromolekulare Chemie Macromolecular Symposia ◽

10.1002/masy.19880150107 ◽

1988 ◽

Vol 15 (1) ◽

pp. 91-103 ◽

Cited By ~ 97

Author(s):

Yurii M. Ostanevich

Keyword(s):

Small Angle ◽

Time Of Flight ◽

Small Angle Scattering ◽

Neutron Sources ◽

Angle Scattering ◽

Pulsed Neutron

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Time-of-flight neutron small-angle scattering from a superconducting composite wire

Journal of Applied Crystallography ◽

10.1107/s0021889882012771 ◽

1982 ◽

Vol 15 (6) ◽

pp. 611-614 ◽

Cited By ~ 5

Author(s):

K. Osamura ◽

H. Tsunekawa ◽

Y. Murakami ◽

M. Ono ◽

H. Yoshida ◽

...

Keyword(s):

Small Angle ◽

Time Of Flight ◽

Small Angle Scattering ◽

Composite Wire ◽

Angle Scattering ◽

Neutron Small Angle Scattering

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Advanced Small-Angle Scattering Instrument Available in the Tokyo Area. Time-Of-Flight, Small-Angle Neutron Scattering Developed on the iMATERIA Diffractometer at the High Intensity Pulsed Neutron Source J-PARC

Quantum Beam Science ◽

10.3390/qubs4040042 ◽

2020 ◽

Vol 4 (4) ◽

pp. 42

Author(s):

Satoshi Koizumi ◽

Yohei Noda ◽

Tomoki Maeda ◽

Takumi Inada ◽

Satoru Ueda ◽

...

Keyword(s):

Neutron Scattering ◽

Small Angle ◽

High Intensity ◽

Small Angle Neutron Scattering ◽

Time Of Flight ◽

Small Angle Scattering ◽

Proton Accelerator ◽

Static Structure Factor ◽

Angle Scattering ◽

Pulsed Neutron

A method of time-of-flight, small-angle neutron scattering (TOF-SANS) has been developed based on the iMATERIA powder diffractometer at BL20, of the Materials and Life Sciences Facility (MLF) at the high-intensity proton accelerator (J-PARC). A large-area detector for SANS, which is composed of triple-layered 3He tube detectors, has a hole at its center in order to release a direct beam behind and to detect ultra-small-angle scattering. As a result, the pulsed-neutron TOF method enables us to perform multiscale observations covering 0.003 < q (Å−1) < 40 (qmax/qmix = 1.3 × 104) and to determine the static structure factor S(q) and/or form factor P(q) under real-time and in-situ conditions. Our challenge, using unique sample accessories of a super-conducting magnet and polarized neutron, is dynamic nuclear polarization (DNP) for contrast variation, especially for industrial use. To reinforce conventional SANS measurements with powder materials, grazing-incidence small-angle neutron scattering (GISANS) or reflectivity is also available on the iMATERIA instrument.

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