Energy-resolved neutron imaging at a pulsed source utilizes the<br />
energy-dependent neutron transmission measured via time-of-flight to extract<br />
quantitative information about the internal microstructure of an object. At the<br />
RADEN instrument at J-PARC in Japan, we use cutting-edge detectors employing<br />
micro-pattern detectors or fast Li-glass scintillators and fast, all-digital<br />
data acquisition to perform such measurements, while continuing their<br />
development toward better utilization of the intense neutron source. In<br />
particular, for the Micro-Pixel Chamber based Neutron Imaging Detector<br />
({\mu}NID), a micro-pattern detector with a 400 {\mu}m pitch and employing 3He<br />
for neutron conversion, we have successfully improved the spatial resolution<br />
from 200 to 100 {\mu}m, increased the detection efficiency from 18 to 26% for<br />
thermal neutrons, and increased the maximum count rate from 0.4 to 1 Mcps. We<br />
are also testing a new readout element with a 215 {\mu}m pitch for further<br />
improved spatial resolution, and a {\mu}NID with boron-based neutron converter<br />
for increased rate performance.