High Flux Neutron Imaging

This book deals with aspects and particularities of
neutron imaging
at high beam intensities. Nevertheless, it will also
be helpful for
the case of lower ones. Two main advantages of
exploiting a high
neutron flux are: short exposure times i.e. high
temporal resolution
and high dynamic range with the capability of
visualising even
strongly attenuating objects. However, also new
problems occur. On
the example of the neutron imaging instrument
Neutrograph, the
following issues are discussed: the special
instrument design with
enhanced shielding of the detector, the correction of
both
degradation of the neutron converter and fluctuations
in the CCD's
efficiency as well as specific techniques for
measuring in 2D and 3D
with either high temporal resolution or high dynamic
range. These
techniques are illustrated with examples from
investigations on heat
exchangers and combustion engines, parts from
aircrafts, fossils and
historical heritage.

Autorentext

Andreas Van Overberghe studied physics at the University ofHeidelberg. After his diploma thesis at the Max-Planck Institutefor Nuclear Physics, he went for a doctoral thesis to theInstitute Laue-Langevin, Grenoble. The subject of his work wasthe development of a neutron tomograph and the research onprojects from different applications.

Klappentext

This book deals with aspects and particularities ofneutron imagingat high beam intensities. Nevertheless, it will alsobe helpful forthe case of lower ones. Two main advantages ofexploiting a highneutron flux are: short exposure times i.e. hightemporal resolutionand high dynamic range with the capability ofvisualising evenstrongly attenuating objects. However, also newproblems occur. Onthe example of the neutron imaging instrumentNeutrograph, thefollowing issues are discussed: the specialinstrument design withenhanced shielding of the detector, the correction ofbothdegradation of the neutron converter and fluctuationsin the CCD'sefficiency as well as specific techniques formeasuring in 2D and 3Dwith either high temporal resolution or high dynamicrange. Thesetechniques are illustrated with examples frominvestigations on heatexchangers and combustion engines, parts fromaircrafts, fossils andhistorical heritage.