skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Neutron interrogation systems using pyroelectric crystals and methods of preparation thereof

Abstract

According to one embodiment, an apparatus includes a pyroelectric crystal, a deuterated or tritiated target, an ion source, and a common support coupled to the pyroelectric crystal, the deuterated or tritiated target, and the ion source. In another embodiment, a method includes producing a voltage of negative polarity on a surface of a deuterated or tritiated target in response to a temperature change of a pyroelectric crystal, pulsing a deuterium ion source to produce a deuterium ion beam, accelerating the deuterium ion beam to the deuterated or tritiated target to produce a neutron beam, and directing the ion beam onto the deuterated or tritiated target to make neutrons using a voltage of the pyroelectric crystal and/or an HGI surrounding the pyroelectric crystal. The directionality of the neutron beam is controlled by changing the accelerating voltage of the system. Other apparatuses and methods are presented as well.

Inventors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1373389
Patent Number(s):
9,723,704
Application Number:
12/540,203
Assignee:
Lawrence Livermore National Security, LLC LLNL
DOE Contract Number:
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2009 Aug 12
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; 36 MATERIALS SCIENCE

Citation Formats

Tang, Vincent, Meyer, Glenn A., Falabella, Steven, Guethlein, Gary, Rusnak, Brian, Sampayan, Stephen, Spadaccini, Christopher M., Wang, Li-Fang, Harris, John, and Morse, Jeff. Neutron interrogation systems using pyroelectric crystals and methods of preparation thereof. United States: N. p., 2017. Web.
Tang, Vincent, Meyer, Glenn A., Falabella, Steven, Guethlein, Gary, Rusnak, Brian, Sampayan, Stephen, Spadaccini, Christopher M., Wang, Li-Fang, Harris, John, & Morse, Jeff. Neutron interrogation systems using pyroelectric crystals and methods of preparation thereof. United States.
Tang, Vincent, Meyer, Glenn A., Falabella, Steven, Guethlein, Gary, Rusnak, Brian, Sampayan, Stephen, Spadaccini, Christopher M., Wang, Li-Fang, Harris, John, and Morse, Jeff. Tue . "Neutron interrogation systems using pyroelectric crystals and methods of preparation thereof". United States. doi:. https://www.osti.gov/servlets/purl/1373389.
@article{osti_1373389,
title = {Neutron interrogation systems using pyroelectric crystals and methods of preparation thereof},
author = {Tang, Vincent and Meyer, Glenn A. and Falabella, Steven and Guethlein, Gary and Rusnak, Brian and Sampayan, Stephen and Spadaccini, Christopher M. and Wang, Li-Fang and Harris, John and Morse, Jeff},
abstractNote = {According to one embodiment, an apparatus includes a pyroelectric crystal, a deuterated or tritiated target, an ion source, and a common support coupled to the pyroelectric crystal, the deuterated or tritiated target, and the ion source. In another embodiment, a method includes producing a voltage of negative polarity on a surface of a deuterated or tritiated target in response to a temperature change of a pyroelectric crystal, pulsing a deuterium ion source to produce a deuterium ion beam, accelerating the deuterium ion beam to the deuterated or tritiated target to produce a neutron beam, and directing the ion beam onto the deuterated or tritiated target to make neutrons using a voltage of the pyroelectric crystal and/or an HGI surrounding the pyroelectric crystal. The directionality of the neutron beam is controlled by changing the accelerating voltage of the system. Other apparatuses and methods are presented as well.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 2017},
month = {Tue Aug 01 00:00:00 EDT 2017}
}

Patent:

Save / Share:
  • An apparatus, method, and system of reservoir interrogation. A tracer is encapsulating in a receptacle. The receptacle containing the tracer is injected into the reservoir. The tracer is analyzed for reservoir interrogation.
  • This patent describes a petroleum-based fuel composition of reduced tendency to corrode copper and aluminum surfaces contacted by the fuel composition. It comprises a petroleum-based fuel and a corrosion inhibiting amount of oil-soluble adduct of a triazole and a basic nitrogen compound selected from the group consisting of polyamines, alkoxyamines, aryloxyamines and aryloxyamines, the adduct being resistant to extraction from an oil phase to a water phase.
  • In one embodiment, a system comprises a semiconductor gamma detector material and a hole blocking layer adjacent the gamma detector material, the hole blocking layer resisting passage of holes therethrough. In another embodiment, a system comprises a semiconductor gamma detector material, and an electron blocking layer adjacent the gamma detector material, the electron blocking layer resisting passage of electrons therethrough, wherein the electron blocking layer comprises undoped HgCdTe. In another embodiment, a method comprises forming a hole blocking layer adjacent a semiconductor gamma detector material, the hole blocking layer resisting passage of holes therethrough. Additional systems and methods are alsomore » presented.« less
  • Compounds of the formula: ((1-R1-QUI NU CL I DIN-3-YL(+))-OOC-C (-R) (-OH)-), X-Benzene Z(-) wherein R is aryl, alkyl, cycloalkyl, phenyl, cyclopentyl, cyclohexyl, a ligand containing Tc-99m in chelated form or a ligand capable of chelating Tc-99m; R/sub 1/ is H or lower alkyl; X is in the ortho-, meta or para- position, and is selected from the group consisting of /sup 125/I, /sup 123/I, /sup 127/I, I, /sup 18/F, /sup 75/Br, /sup 77/Br, NH/sub 2/, and 1-(N=N-), R/sub 2/-Piperidine wherein R/sub 2/ is in the 2,3, or 4 position and is selected from the group consisting of H and lowermore » alkyl, provided that when R is a ligand capable of chelating Tc-99m o containing Tc-99m in chelated form, X is not a radioisotope and may also be H or lower alkyl; Z/theta/ is an anion; or the free amine thereof; and denotes an asymmertric carbon atom.« less
  • Cross-interrogating photonic detection systems and methods are shown. A flow through photonic crystal membrane with a surface enhanced Raman scattering (SERS) substrate is provided with pores which are distributed along multiple regions. The pores of one region have walls to which a first type of target specific anchor can be attached, while pores of another region have walls to which a second type of target specific anchor can be attached. An optical arrangement out-of-plane to the SERS substrate is also provided for enhanced sensitivity and identification of target organisms.