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Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials
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Note: 4-bounce neutron polarizer for reflectometry applications.

B Nagy1, D G Merkel1, L Jakab1

  • 1Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525 Budapest, Hungary.

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|June 6, 2018
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Summary
This summary is machine-generated.

A novel neutron polarizer using supermirrors was developed. It achieves high polarization efficiency and intensity, simplifying integration into existing neutron reflectometer setups.

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Area of Science:

  • Neutron optics
  • Condensed matter physics

Background:

  • Neutron reflectometry is a powerful technique for surface and interface analysis.
  • Efficient neutron polarizers are crucial for spin-dependent studies.

Purpose of the Study:

  • To design and implement a high-performance neutron polarizer for the GINA reflectometer.
  • To evaluate the polarizing efficiency and transmission characteristics of the device.

Main Methods:

  • Utilized four successive reflections on m = 2.5 supermirrors.
  • Integrated the polarizer into the GINA neutron reflectometer at the Budapest Neutron Centre.

Main Results:

  • Achieved 99.6% polarizing efficiency.
  • Maintained 80% transmitted intensity for the selected polarization state.
  • Successfully filtered out higher harmonics while preserving the beam's optical axis.

Conclusions:

  • The developed neutron polarizer offers excellent performance and straightforward integration.
  • This device enhances capabilities for spin-dependent neutron reflectometry experiments.