Accession Number:

AD1042003

Title:

Radiological and Nuclear Detection Material Science: Novel Rare-Earth Semiconductors for Solid-State Neutron Detectors and Thin High-k Dielectrics

Descriptive Note:

Technical Report,15 Nov 2006,14 Jan 2012

Corporate Author:

NEBRASKA UNIV LINCOLN LINCOLN United States

Report Date:

2017-11-01

Pagination or Media Count:

28.0

Abstract:

Specifically, the goals have been to investigate new materials based primarily on rare earth semiconductors, and explore new solid state detector configurations of these materials as neutron detectors. Seven materials monoclinic and cubic GdHfO2 alloys, monoclinic and cubic Gd2O3, GdEuO, Gd doped GaN, and Li2B4O7 have been modeled, synthesized and made into devices. Various exemplar materials have been fabricated and the theoretical modeling has been completed for gadolinium oxidehafnium alloys oxide, the gadolinium oxides, gadolinium doped europium oxides and gadolinium doped GaN. Neutron testing has also been achieved for the GdHfO2 alloy to silicon devices, Gd2O3 heterostructure diodes and, to a limited extent, lithium tetraborate. Characterization of heterojunction devices made from the GdEuO alloy has been performed. The more recent efforts 2011 within the scope of the project have emphasized Li2B4O7 because this materials exceptional merits as a neutron detector material by itself and also because of the potential of this material for oxide-to-oxide heterostructures.

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics
  • Properties of Metals and Alloys
  • Electrical and Electronic Equipment
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE