Quantitative time resolved neutron imaging methods at the high flux neutron source FRM-II [Elektronische Ressource] / Johannes Brunner

Technischen Universit¨at Munc¨ henFakultat¨ fur¨ PhysikInstitut fur¨ Experimentalphysik E21Quantitative time resolved neutronimaging methods at the high flux neutronsource FRM-IIJohannes BrunnerVollst¨andiger Abdruck der von der Fakult¨at fur¨ Physikder Technischen Universit¨at Munc¨ hen zur Erlangung des akademischen Grades einesDoktors der Naturwissenschaftengenehmigten Dissertation.Vorsitzender: Univ. Prof. Dr. M. KleberPruf¨ er der Dissertation: 1. Univ. Prof. Dr. P. B¨oni2. Univ. Prof. Dr. W. PetryDie Dissertation wurde am 19.09.2005 bei der Technischen Universit¨at Mu¨nchen ein-gereicht und durch die Fakult¨at fu¨r Physik am 01.03.2006 angenommen.”One picture is worth a thousand words”chinese sayingAbstractEnglishIn the current work various new experimental methods and computation proceduresin the field of neutron imaging are presented. These methods have a significant technicalimportance in non-destructive material investigations.Withstroboscopicneutronradiographyperiodicprocessescanbeinvestigatedonasub-millisecond time scale. This opens great opportunities for the study and the developmentof combustion engines.Energy selective time of flight neutron radiography at neutron spallation sources usesthe energy dependence of the neutron cross section to distinguish between materials. Theenergy resolution of this technique is very good and allows the identification of specificmaterials.