 | |||||
           | |||||
 |
 |
||||
|
|
Tutorials Wireless Networked Sensing Fiber Optic Sensor Technology Analog Portable Sensors Phosphor-Based Sensors Energy Scavenging Storage Neutron Imaging Sensors Transducers Testing by Optical Optical Fibre Nanowire Sensors |
|
Tutorial 2c
Tutorial Description:NEUTRON IMAGING SENSORS AND THEIR APPLICATIONS Presenter: Anton Tremsin University of California, Berkeley, USA www.ssl.berkeley.edu Thermal and cold neutron imaging technology provides unique opportunities in such diverse areas as fuel cell research, water propagation, magnetic field imaging, strain, texture and phase mapping in engineering samples, root growth, studies of cultural artifacts and many others. The novel studies with neutrons reveal processes happening inside and behind thick objects. The fact that neutrons interact with the nucleus, as opposed to electrons in case of x-rays, leads to a very different contrast mechanism, providing very different and complimentary to X-ray imaging information about the internal structure of studied objects. As a result, many organic materials are quite opaque and many metals can be easily penetrated. In this course we will discuss the principles of neutron imaging and review both neutron beam line facilities and existing neutron imaging sensor technologies. The experiments conducted at both continuous neutron sources, based on nuclear reactors, and pulsed spallation neutron sources will be described and compared in terms of achievable resolution in investigations of both static and dynamic processes. A number of neutron imaging studies, including strain and material composition mapping with ~0.1 mm spatial resolution, dynamic magnetic field imaging, investigation of oil distribution in car engines and inside a fuel injector nozzle, root growth, micro-tomography of Roman sculptures will be shown to illustrate the unique capabilities of neutron imaging technology. |
|