Neutron beam tomography software
Description
When a sample is traversed by a neutron beam, inhomogeneities in the sample will cause deflections, and the deflections will permit conclusions to be drawn concerning the location and size of the inhomogeneities. The associated computation is similar to problems in tomography, analogous to X-ray tomography though significantly different in detail. We do not have any point-sample information, but only mean values over short line segments. Since each mean value is derived from a separate neutron counter, the quantity of available data has to be modest; also, since each datum is an integral, its geometric precision is inferior to that of X-ray data. Our software is designed to cope with these difficulties. (orig.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Bei Neutronenbestrahlung eines Versuchsobjektes koennen die Inhomogenitaeten im Objekt zu Strahlenablenkungen fuehren. Diese Ablenkungen lassen auf Ort und Art der Inhomogenitaeten schliessen. Die damit verbundene Berechnung ist der Roentgentomographie analog, jedoch sind viele Einzelheiten wesentlich anders. Die punktweise Information, die aus einem einzelnen Roentgenstrahl entsteht, fehlt uns; stattdessen haben wir nur den Mittelwert ueber einem endlichen Abschnitt. Jeder Mittelwert wird von einem Neutronenzaehler geliefert, wobei die Zaehlrate klein ist, verglichen zu Roentgenzaehlraten. Ausserdem ist der Mittelwert im geometrischen Sinne nicht so aussagereich wie der zum Roentgenstrahl gehoerende Punktwert. Unser Softwareentwurf nimmt diese Schwierigkeiten in Kauf. (orig.)
Files
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The record is publicly accessible, but files are restricted to users with access.
Additional details
Publishing Information
- Imprint Pagination
- 48 p.
- Report number
- HMI-B--450
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 20014903
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Descriptors DEI
- BLOCH WALL; DATA ACQUISITION; DATA PROCESSING; DOMAIN STRUCTURE; FERROMAGNETIC MATERIALS; IRON; NEUTRON BEAMS; NEUTRON DIFFRACTION; NICKEL; PROGRAMMING; SMALL ANGLE SCATTERING; THERMAL NEUTRONS; TOMOGRAPHY
- Descriptors DEC
- BARYONS; BEAMS; COHERENT SCATTERING; DIFFRACTION; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; MAGNETIC MATERIALS; MATERIALS; METALS; NEUTRONS; NUCLEON BEAMS; NUCLEONS; PARTICLE BEAMS; SCATTERING; TRANSITION ELEMENTS