Abstract
Despite the challenges, neutron resonance spin echo still holds the promise to improve upon neutron spin echo for the measurement of slow dynamics in materials. We present a bootstrap, radio frequency neutron spin flipper using high temperature superconducting technology capable of flipping neutron spin with either nonadiabatic or adiabatic modes. A frequency of 2 MHz has been achieved, which would achieve an effective field integral of 0.35 T m for a meter of separation in a neutron resonance spin echo spectrometer at the current device specifications. In bootstrap mode, the self-cancellation of Larmor phase aberrations can be achieved with the appropriate selection of the polarity of the gradient coils.
| Original language | English |
|---|---|
| Article number | 015117 |
| Journal | Review of Scientific Instruments |
| Volume | 91 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 2020 |
Funding
The authors thank the research sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy. This material is based on the work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC05-00OR22725. This research used resources at the Missouri University Research Reactor. The authors would like to thank the operators and support staff, in particular, Peter Norgard, for making accommodations for equipment utilities. The authors would also like to thank Josh Pierce, Todd Sherline, Andre Parizzi, and Mike Hittman for providing equipment, and the authors thank Roger Pynn, Georg Ehlers, Michel Thijs, Jeroen Plomp, and Steven Parnell for helpful discussions. This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725, with the U.S. Department of Energy (DOE). The U.S. government retains, and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript or allow others to do so, for U.S. government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | |
| Office of Science | |
| Basic Energy Sciences | DE-AC05-00OR22725 |
| Oak Ridge National Laboratory |