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Title: Towards neutron scattering experiments with sub-millisecond time resolution

Journal Article · · Journal of Applied Crystallography (Online)
 [1];  [2];  [3];  [3];  [3];  [3];  [3];  [3];  [4];  [1]
  1. Uppsala Univ. (Sweden)
  2. Inst. Laue-Langevin (ILL), Grenoble (France)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source
  4. Uppsala Univ. (Sweden); Inst. Laue-Langevin (ILL), Grenoble (France)

Neutron scattering techniques offer several unique opportunities in materials research. However, most neutron scattering experiments suffer from the limited flux available at current facilities. This limitation becomes even more severe if time-resolved or kinetic experiments are performed. A new method has been developed which overcomes these limitations when a reversible process is studied, without any compromise on resolution or beam intensity. We demonstrate that, by recording in absolute time the neutron detector events linked to an excitation, information can be resolved on sub-millisecond timescales. Specifically, the concept of the method is demonstrated by neutron reflectivity measurements in time-of-flight mode at the Liquids Reflectometer located at the Spallation Neutron Source, Oak Ridge National Laboratory, Tennessee, USA, combined with in situ rheometry. Finally, the opportunities and limitations of this new technique are evaluated by investigations of a micellar polymer solution offering excellent scattering contrast combined with high sensitivity to shear.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1324122
Journal Information:
Journal of Applied Crystallography (Online), Vol. 48, Issue 1; ISSN 1600-5767
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Cited By (5)

Recent upgrades of the neutron reflectometer D17 at ILL journal March 2018
The high-intensity option of the SANS diffractometer KWS-2 at JCNS – characterization and performance of the new multi-megahertz detection system journal March 2018
Event-based processing of neutron scattering data at the Spallation Neutron Source journal May 2018
Time Resolved Polarised Grazing Incidence Neutron Scattering from Composite Materials journal March 2019
The high-intensity option of the SANS diffractometer KWS-2 at JCNS - characterization and performance of the new multi-megahertz detection system text January 2018