First Measurements of the Inclined Boron Layer Thermal-Neutron Detector for Reflectometry

Abstract

A prototype detector based on the inclined boron layer principle is introduced. For typical measurement conditions at the Liquids Reflectometer at the Spallation Neutron Source, its count rate capability is shown to be superior to that of the current detector by nearly two orders of magnitude.

Boron carbide coatings for neutron detection probed by x-rays, ions, and neutrons to determine thin film quality

“…However, the alternative and safe 10 B solid state neutron converter detector technology is still in the early stages of development. [15][16][17][18] A. Neutron detection by 10 …”

Neutron reflectometry on highly absorbing films and its application to 10 B 4 C-based neutron detectors

“…Concerning small-area detectors (less than 1 m 2 ), the current detector technology is reaching fundamental limits in position resolution and rate capability. The Multi-Blade [11][12][13][14], the Jalousie detector [15,16], the A1CLD [17] and many others [18,19] are an example of the detector developments for small area coverage which exploit solid neutron converters operated at a grazing angle (between 0 • and 10 • ) in order to increase the neutron detection efficiency. For detection applications, neutron reflection from the detector elements must be avoided because it limits the maximum efficiency that can be attained and it may give rise to misaddressed events.…”