PONTO—An instrument for imaging with polarized neutrons

PONTO—An instrument for imaging with polarized neutrons

An imaging instrument dedicated to radiography and tomography with polarized cold neutrons was installed and successfully tested at the BER II reactor at Helmholtz Zentrum Berlin. The spatial resolution for un-polarized neutrons was less than 85 μm for a point-to-detector distance of 5 mm, in the ca...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2011-09, Vol.651 (1), p.53-56
Hauptverfasser: Treimer, W., Ebrahimi, O., Karakas, N., Seidel, S.O.
Format: Artikel
Sprache:eng
Schlagworte:
Accelerators
Imaging
Magnetic fields
Magnetic flux pinning
Neutron imaging
Neutron radiography
Nuclear engineering
Nuclear reactor components
Polarized neutrons
Radiography
Spin polarized neutron imaging
Tomography
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Beschreibung
Zusammenfassung:An imaging instrument dedicated to radiography and tomography with polarized cold neutrons was installed and successfully tested at the BER II reactor at Helmholtz Zentrum Berlin. The spatial resolution for un-polarized neutrons was less than 85 μm for a point-to-detector distance of 5 mm, in the case of polarized neutrons it was less than 300 μm. With these resolutions, details of magnetic fields in different lead samples below the critical temperature being in the Meissner phase and magnetic flux pinning could be imaged.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2011.01.009