DOCSLIB.ORG

Mapping Crystal and Material Phases with Neutron Imaging

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Mapping Crystal and Material Phases with Neutron Imaging Mapping crystal and material phases with neutron imaging Daniel S. Hussey J.M. LAMANNA, D.L. JACOBSON National Institute of Standards and Technology, Gaithersburg, MD H-Bearing Minerals Type I/II Chondrules Iron-Nickel and Opaque and Metallic Veins Assemblages 2nd Congreso Argentino Técnicas Neutrónicas National Institute of Standards and Technology (NIST) • Main Campus Located in Gaithersburg, MD USA • Satellites in Boulder, CO and Charleston, SC • ~15 miles north of Washington D.C. • Established 1901, First U.S. National Lab • ~650 acres, ~3000 people, 4 Nobel Laureates NCNR 2nd Congreso Argentino Técnicas Neutrónicas NIST Center for Neutron Research (NCNR) • Operating since 1967, re-licensed to run till 2029 • 20 MW Research Reactor • Largest neutron scattering user program in the U.S. 2nd Congreso Argentino Técnicas Neutrónicas NCNR Scattering and Imaging Instruments 2018: 28 operational instruments • 7 thermal • 21 cold – 2 new under development – 2 Neutron Imaging Instruments – Access via call for proposals 2x per year (no fee for beamtime) • Proposals from any country accepted – Proprietary experiments at full cost recovery ~$6k / day 2nd Congreso Argentino Técnicas Neutrónicas NIST Imaging Program Usage (2006-2018) Instrument & USAGE BY RESEARCH TOPIC • Total Number of Beam Battery & Alternate Energy Detector Irradiation 6% Days: 1931 Development 1% Biology Cyrogenic 11% 3% Liquids • 416 Unique Experiments 2% Industrial Engineering / • 2% 40 Patents (Fuel Cells only) Materials • 200 papers Hydrogen 5% Storage & • 66 PhD Students Production 4% Heat Pipe Usage by Institute Type 4% Indsutry 34% 28% Academic Concrete, Geology, Fuel Cells National Lab Porous Media 49% 38% / Agency 13% Continue to grow with NeXT 2nd Congreso Argentino Técnicas Neutrónicas Seeing the world with neutron vision Did Superman have the wrong vision? 2nd Congreso Argentino Técnicas Neutrónicas Seeing the world with neutron vision 2nd Congreso Argentino Técnicas Neutrónicas 7 The NIST Simultaneous Neutron and X-ray Tomography System Neutron X-ray Full Volumes Segmented Composite Volume J.M. LaManna et al, Rev. Sci. Inst., 88, 113702 (2017). ➢ Neutrons: organics ➢ X-rays: minerals nd 2 Congreso Argentino Técnicas Neutrónicas W.S. Chiang et al, PETROPHYSICS, 2018 NeXT Phase Segmentation Neutron attenuation (mm-1) X-ray attenuation (mm-1) Neutron (a) and X-ray (b) tomograms of an Alkaline AA battery 2nd Congreso Argentino Técnicas Neutrónicas One NeXT segmented slice Identifying structure formed by ASR Highly reactive Na/K volcanic glass as gel ‘point source’ Characteristic structures formed by ASR imaged destructively with SEM X N X N This is the first time ASR has been identified nondestructively in a large volume, i.e. 10 mm dia, 15 mm height vs single slices in SEM 2nd Congreso Argentino Técnicas Neutrónicas Dissolution of Limestone Under Acidic Conditions 3.8 cm diameter cores, 60 micrometer resolution • Aim: understand pore network evolution during acid flow in limestone for purpose of CO2 sequestration • Neutron radiography to capture dynamic pore formation • Simultaneous CT to obtain 3D pore network • XCT used to segment and extract pore network ❖Algorithm to remove the vertical stripe image artifact is now developed, but not applied to this data set 2nd Congreso Argentino Técnicas Neutrónicas L.M. Anovitz et al, Abstract #H13F-1442, AGU fall meeting 2016. 4D NeXT of Water Retention in Soils 1 Hour 4 Hour 7 Hour 10 Hour • Measure the preferential pathways for water removal from sand column • NeXT provides simple segmentation of water, sand, and void (analysis in process) 2nd Congreso Argentino Técnicas Neutrónicas Yan Jin et al, in prep Bragg Edge Imaging • 푛 휆 = 2 푑 sin(휃) • θ=90° represents the maximum λ that this crystal plane can scatter • This causes a sharp drop in scattering called a Bragg edge • Use to measure strain or distribution of crystal phases 2nd Congreso Argentino Técnicas Neutrónicas R. Woracek et al, Advanced Materials (2014). TRIPP Steel • With applied strain, TRIPP steels undergo phase transformations from Martensite to Austenite • Surface EBSD maps can be used to calculate the “volume” fraction of ferrite (α), martensite (α′), and austenite (γ) each phase as a function of strain 2nd Congreso Argentino Técnicas Neutrónicas Wanchuck Woo et al, Scripta Materialia 158 (2019) 105–109 TRIPP Steel Volume Fractions vs. Strain ferrite (α), martensite (α′), and austenite (γ) Neutron Bragg Edge Imaging and Diffraction volume fractions used to correct surface sensitive EBSD Bragg Edge Imaging and neutron diffraction (not measurements shown) provide contrary results for the volume fraction compared to EBSD ➢ Bulk probes are important!! 2nd Congreso Argentino Técnicas Neutrónicas Wanchuck Woo et al, Scripta Materialia 158 (2019) 105–109 Hydrogen Embrittlement with Bragg Edge Imaging H2 environment Air environment +2500 µε -2500 µε Strain field (εzz) maps over the specimen face for the same load (P=5150 N) in hydrogen (left) and in air (right). NIST in situ hydrogen charging/fatigue rig 2nd Congreso Argentino Técnicas Neutrónicas M. Connolloy et al, in prep Dark Field Imaging : Spatially Resolved SANS Mesh Dark field (loss of amplitude) measures the correlation function: Autocorrelation Length: ξ = Z λ / Pd = Z λ D / Pg L γ( ξ ) = 1 - 흁흃 / 흁∞ Open 흁흃t = -ln(AS(ξ) / AEmpty) Build Mesh Microspheres Raw images as ξ varied in water by changing D Pushin et al, PRA (2017) & Sarenac et al, PRL (2018) Dark field of microspheres; solid line is 2nd Congreso Argentino Técnicas Neutrónicas expected from SANS data 1.07 μm 1.07 0.96 μm 0.96 Additively Manufacture Tensile Test at 50% Lifetime 1.07 μm 1.07 0.84 μm 0.84 0.96 μm 0.96 0.72 μm 0.72 ➢ Stress changes pore structure, build up of porosity at 840 nm in μm 0.84 the middle indicates failure point ➢ From the series of ξ-points, we extract the pore size and volume fraction changes with applied μm 0.72 fatigue across the sample 2nd Congreso Argentino Técnicas Neutrónicas Brooks et al, Materials and Design 140 (2018) Conclusions • Neutron imaging provides a unique view into materials and systems • Neutron and X-ray Tomography is a powerful tool to understand the composition of a complex sample • Bragg edge imaging has the promised to measure strains and crystalline phase distributions, maybe even in 3D • Dark-field imaging is an emerging technique that might be a valuable tool for additive manufacturing and geological studies 2nd Congreso Argentino Técnicas Neutrónicas The NIST Neutron Imaging Team (some old photos … ) Muhammad Arif David Jacobson Elias Baltic Daniel Hussey Elias Baltic Jacob LaManna Thanks for your attention. Questions?? 2nd Congreso Argentino Técnicas Neutrónicas.
Load more

Recommended publications
  • Neutrons and Fundamental Symmetries Experimental II: Edms Chen-Yu Liu Indiana University [email protected]
    Neutrons and Fundamental Symmetries Experimental II: EDMs Chen-Yu Liu Indiana University [email protected] June 20, 2018 NNPSS 1 Topics I will cover: Lecture 1: beta-decay • A brief history of the electroweak theory---the precursor to the Standard Model. • Neutron decay to test the V-A theory & beyond the SM interactions • Current status with neutron experiments on gA & lifetime • Physics is Symmetries Lecture 2: EDM Q: Why does EDM violate T? • CP violation • Electric Dipole Moments: Highly sensitive low-energy probes of new Physics • muon- g-2 Lecture 3: other symmetry violation measurements/tests • Baryogenesis & symmetry violations • Nnbar oscillation: B violation • Hadronic weak interactions: P violation • NOPTREX: T violation • Neutron interferometry: Lorentz symmetry violation Chen-Yu Liu 2 Mirror (leftright) “Signatures of the Artist,” by S. Vigdor, Oxford University Press(2018) Challenge: Can you find the differences (in three places) between the final and the original picture? Mirror (up down) “Plane-filling motif with reptiles” by M.C. Escher P Blackwhite CP 3 CP T Since time symmetry requires that these time-reversed relative directions be equally probable, it requires that there be no average charge separation along the spin direction, so the EDM must vanish. or If an non-zero EDM is found, then the time reversal symmetry is violated, and through the CPT theorem, the CP is violated by the same amount. 4 Electric Dipole Moment of polar molecules NH3 molecule has two ground states. They are of the same energies (degenerate). Time Reversal J J d d d d J J Electric Dipole Moment of polar molecules NH3 molecule has two ground states.
    [Show full text]
  • Not All Superheroes Were Created Equal
    00 gresh fm i-xii, 1-6 8/13/04 1:54 PM Page i THE SCIENCE OF SUPERVILLAINS Lois H. Gresh Robert Weinberg John Wiley & Sons, Inc. 00 gresh fm i-xii, 1-6 8/13/04 1:54 PM Page ii Copyright © 2005 by Lois H. Gresh and Robert Weinberg. All rights reserved Introduction © Chris Claremont. All rights reserved Published by John Wiley & Sons, Inc., Hoboken, New Jersey Published simultaneously in Canada No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600, or on the web at www.copyright.com. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008. Limit of Liability/Disclaimer of Warranty: While the publisher and the author have used their best efforts in preparing this book, they make no representations or warranties with respect to the accuracy or completeness of the contents of this book and specifically disclaim any implied war- ranties of merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials.
    [Show full text]
  • AKA Clark Kent) Middle Name Is Joseph
    Superman’s (AKA Clark Kent) Middle Name Is Joseph. What’s that?! There in the sky? Is it a bird? Is it a plane? No! It’s the Man of Tomorrow! Superman has gone by many names over the years, but one thing has remained the same. He has always stood for what’s best about humanity, all of our potential for terrible destructive acts, but also our choice to not act on the level of destruction we could wreak. Superman was first created in 1933 by Joe Shuster and Jerry Siegel, the writer and artist respectively. His first appearance was in Action Comics #1, and that was the beginning of a long and illustrious career for the Man of Steel. In his unmistakable blue suit with red cape, and the stylized red S on his chest, the figure of Superman has become one of the most recognizable in the world. The original Superman character was a bald telepathic villain that was focused on world domination. It was like a mix of Lex Luthor and Professor X. Superman’s powers include incredible strength, the ability to fly. X-ray vision, super speed, invulnerability to most attacks, super hearing, and super breath. He is nearly unstoppable. However, Superman does have one weakness, Kryptonite. When exposed to this radioactive element from his home planet, he becomes weak and helpless. Superman’s alter ego is mild-mannered reporter Clark Kent. He lives in the city of Metropolis and works for the newspaper the Daily Planet. Clark is in love with fellow reporter Lois Lane.
    [Show full text]
  • All Batman References in Teen Titans
    All Batman References In Teen Titans Wingless Judd boo that rubrics breezed ecstatically and swerve slickly. Inconsiderably antirust, Buck sequinedmodernized enough? ruffe and isled personalties. Commie and outlined Bartie civilises: which Winfred is Behind Batman Superman Wonder upon The Flash Teen Titans Green. 7 Reasons Why Teen Titans Go Has Failed Page 7. Use of teen titans in batman all references, rather fitting continuation, red sun gauntlet, and most of breaching high building? With time throw out with Justice League will wrap all if its members and their powers like arrest before. Worlds apart label the bleak portentousness of Batman v. Batman Joker Justice League Wonder whirl Dark Nights Death Metal 7 Justice. 1 Cars 3 Driven to Win 4 Trivia 5 Gallery 6 References 7 External links Jackson Storm is lean sleek. Wait What Happened in his Post-Credits Scene of Teen Titans Go knowing the Movies. Of Batman's television legacy in turn opinion with very due respect to halt late Adam West. To theorize that come show acts as a prequel to Batman The Animated Series. Bonus points for the empire with Wally having all sorts of music-esteembody image. If children put Dick Grayson Jason Todd and Tim Drake in inner room today at their. DUELA DENT duela dent batwoman 0 Duela Dent ideas. Television The 10 Best Batman-Related DC TV Shows Ranked. Say is famous I'm Batman line while he proceeds to make references. Spoilers Ahead for sound you missed in Teen Titans Go. The ones you essential is mainly a reference to Vicki Vale and Selina Kyle Bruce's then-current.
    [Show full text]
  • Development of a Dual-Particle Imaging System for Nonproliferation Applications
    Development of a Dual-Particle Imaging System for Nonproliferation Applications By Alexis Pierre Valère Poitrasson-Rivière A dissertation submitted in partial fulfillement of the requirements for the degree of Doctor of Philosophy (Nuclear Engineering and Radiological Sciences) in the University of Michigan 2016 Doctoral Committee: Professor Sara A. Pozzi, Chair Assistant Professor Marek Flaska, Penn State University Professor Zhong He Associate Professor David D. Wentzloff © Alexis Pierre Valère Poitrasson-Rivière 2016 Dedication This work is dedicated to my rock and my wind. ii Acknowledgements I would first of all like to thank my family and friends for supporting me throughout my doctoral studies. I would also like to thank my advisor, my committee members, the faculty and staff at the Nuclear Engineering & Radiological Sciences department, as well as all the students I had the chance to interact with, for making this experience fulfilling and enjoyable from start to finish. I would finally like to thank the different sponsors that have helped make this work possible. This work is supported, in part, by the U.S. Defense Threat Reduction Agency under Grant No. HDTRA1-09-C-0012, by the National Nuclear Security Administration through NA-22 funding opportunity DE-FOA-0000568, and by the National Science Foundation and the Domestic Nuclear Detection Office of the Department of Homeland Security through the Academic Research Initiative Award #CMMI 0938909. The prototype systems described in this work are funded by the Department of Energy,
    [Show full text]
  • Simulation of a High Speed Counting System for Sic Neutron
    Transactions of the Korean Nuclear Society Spring Meeting Jeju, Korea, May 7-8, 2015 Preliminary Study for Inventories of Minor Actinides in Thorium Molten Salt Reactor Choong Wie Lee* and Hee Reyoung Kim Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea *Corresponding author: [email protected] 1. Introduction 2.2 Concept equation for MSR MSR (Molten Salt Reactor) is one of GEN-IV reactor In the MSR, it is continually refueled during operation, types, of which the coolant and the fuel are mixtures of that is, the MSR is refueled online. Therefore, an isotope molten salt. Thus, it has different characteristic with the i in the reactor will be supplied as the rate of Ai. While conventional reactors which use a solid fuel. It can refueled, the wastes such as minor actinides and fission continually supply the fuel by online refueling and products produced after fission reaction are removed reprocessing of minor actinides so that those can be from the inside of the MSR. Chemical reprocessing is separated and eliminated from the reactor. The MSR used to extract minor actinides from salts and transfer maintains steady state except initial stage and the reactor those to the reprocessing unit. By this reprocessing, the becomes stable. In this research, considering online wastes in the reactor are extracted regularly without refueling, bubbling and reprocessing, the basic concept reactor shutdown. It increases the operation stability of for evaluation of the inventory of minor actinide in the the reactor and decreases the generation of the molten salt reactor is driven using the Bateman equation.
    [Show full text]
  • ISIS Neutron and Muon Source Annual Review 2018
    ISIS Neutron and Muon Source Annual Review 2018 The ISIS Neutron and Muon Source Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, UK T: +44 (0)1235 445592 F: +44 (0)1235 445103 E: [email protected] RAL-TR-2018-013 www.isis.stfc.ac.uk Head office, Science and Technology Facilities Council, Polaris House, North Star Avenue, Swindon SN2 1SZ, UK Establishments at: Rutherford Appleton Laboratory, Oxfordshire; Daresbury Laboratory, Cheshire: UK Astronomy Centre, Edinburgh; Chilbolton Observatory, Hampshire: Boulby Underground Science Facility Boulby Mine, Cleveland. ISIS Neutron and Muon Source Annual Review 2018 was produced for the ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire, OX11 0QX, UK ISIS Director, Prof Robert McGreevy 01235 445599 User Office 01235 445592 ISIS Facility Web pages http://www.isis.stfc.ac.uk ISIS production team: Andrew Collins, Emma Cooper, Sara Fletcher, Poppy Holford, and Rachel Reeves Design and layout: Andrew Collins and Poppy Holford December 2018 © Science and Technology Facilities Council 2018 This work is licensed under a Creative Commons Attribution 3.0 Unported License. RAL-TR-2018-013 Enquiries about copyright, reproduction and requests for additional copies of this report should be addressed to: RAL Library STFC Rutherford Appleton Laboratory Harwell Oxford Didcot OX11 0QX Tel: +44(0)1235 445384 Fax: +44(0)1235 446403 email: [email protected] Neither the Council nor the Laboratory accept any responsibility for loss or damage arising from the use of information contained in any of their reports or in any communication about their tests or investigations.
    [Show full text]
  • DC Comics Jumpchain CYOA
    DC Comics Jumpchain CYOA CYOA written by [text removed] [text removed] [text removed] cause I didn’t lol The lists of superpowers and weaknesses are taken from the DC Wiki, and have been reproduced here for ease of access. Some entries have been removed, added, or modified to better fit this format. The DC universe is long and storied one, in more ways than one. It’s a universe filled with adventure around every corner, not least among them on Earth, an unassuming but cosmically significant planet out of the way of most space territories. Heroes and villains, from the bottom of the Dark Multiverse to the top of the Monitor Sphere, endlessly struggle for justice, for power, and for control over the fate of the very multiverse itself. You start with 1000 Cape Points (CP). Discounted options are 50% off. Discounts only apply once per purchase. Free options are not mandatory. Continuity === === === === === Continuity doesn't change during your time here, since each continuity has a past and a future unconnected to the Crises. If you're in Post-Crisis you'll blow right through 2011 instead of seeing Flashpoint. This changes if you take the relevant scenarios. You can choose your starting date. Early Golden Age (eGA) Default Start Date: 1939 The original timeline, the one where it all began. Superman can leap tall buildings in a single bound, while other characters like Batman, Dr. Occult, and Sandman have just debuted in their respective cities. This continuity occurred in the late 1930s, and takes place in a single universe.
    [Show full text]
  • Superman Vision
    Superman vision If Superman was looking for a new job, who in this world wouldn’t immediately hire him as a Quality Inspector? The ability with laser precision to see moving parts operate in real time, to slow it down, to enlarge and to probe in 3D with his X-ray vision? Consider the LINX project called “4D Scanning Under Operations”, where the forth “D” denotes time. The ambition is to be able to make high resolution 3D X-ray movies of select manufacturing processes, as they happen: Superman vision. Employing X-ray technology for quality inspection and R&D is nothing new. The project’s two industry partners, Danish insulin leader Novo Nordisk and Swedish packaging giant Tetra Pak already use it. However, available technologies are still lacking in the resolution and speed they can provide. There are severe limitations on the size of the object that can be inspected, and taking samples from the manufacturing line back to the lab is often necessary. None of this is ideal. The issue Time resolved X-ray tomography (4D Superman vision) is expanding for scientifi c applications where it holds great promise. However, the industrial application of these technologies still lacks behind. The speed at which 3D images are generated needs to increase, and the scale limitation which is currently just a few millimeters The Novo insulin pen has several moving parts must be lifted. The size and operability of the inspection and is injection moulded with extreme precision equipment itself must be adapted for industry’s purpose. to comply with regulatory requirements.
    [Show full text]
  • Modeling and Simulation of the Transient Reactor Test Facility Using Modern Neutron Transport Methods by Travis J
    Modeling and Simulation of the Transient Reactor Test Facility using Modern Neutron Transport Methods by Travis J. Labossi`ere-Hickman B.S., University of Tennessee, Knoxville (2016) Submitted to the Department of Nuclear Science & Engineering in partial fulfillment of the requirements for the degree of Master of Science in Nuclear Science & Engineering at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY June 2019 ○c Massachusetts Institute of Technology 2019. All rights reserved. Author................................................................ Department of Nuclear Science & Engineering May 10, 2019 Certified by. Benoit Forget Professor of Nuclear Science & Engineering Thesis Supervisor Certified by. Kord Smith KEPCO Professor of the Practice of Nuclear Science & Engineering Thesis Supervisor Accepted by . Ju Li Battelle Energy Alliance Professor of Nuclear Science & Engineering and Professor of Materials Science & Engineering Chair, Department Committee on Graduate Students 2 Modeling and Simulation of the Transient Reactor Test Facility using Modern Neutron Transport Methods by Travis J. Labossi`ere-Hickman Submitted to the Department of Nuclear Science & Engineering on May 10, 2019, in partial fulfillment of the requirements for the degree of Master of Science in Nuclear Science & Engineering Abstract The Transient Reactor Test Facility (TREAT) has regained the interest of the nuclear engineering community in recent years. While TREAT’s design makes it uniquely suited to transient fuel testing, it also makes the reactor very challenging to model and simulate. In this thesis, we build a Monte Carlo model of TREAT’s Minimum Critical Mass core to examine the effects of fuel impurities, calculate a reference solution, and analyze a number of multigroup cross section generation approaches. Several method of characteristics (MOC) simulations employing these cross sections are then converged in space and angle, corrected for homogenization, and compared to the Monte Carlo reference solution.
    [Show full text]
  • "Superman" by Wesley Strick
    r "SUPERMAN" Screenplay by Wesley Strick Jon Peters Entertainment Director: Tim Burton Warner Bros. Pictures July 7, 1997 y?5^v First Draft The SCREEN is BLACK. FADE IN ON: INT. UNIVERSITY CORRIDOR - LATE NIGHT A YOUNG PROFESSOR hurries down the empty hall — hotly murmuring to himself, intensely concerned ... A handsome man, about 30, but dressed strangely — are we in some other country? Sometime in the past? Or in the future? YOUNG PROFESSOR It's switched off ... It can't be ... But the readings, what else — The Young Professor reaches a massive steel door, like the hatch of a walk-in safe. Slides an ID card, that's emblazoned with a familiar-looking "S" shield: the door hinges open. The Young Professor pauses — he hadn't noted, till now, the depths of his fear. Then, enters: INT. UNIVERSITY LAB - LATE NIGHT Dark. The Professor tries the lights. Power is off. Cursing, he's got just enough time, as the safe door r swings closed again, to find an emergency flashlight. He flicks it on: plays the beam over all the bizarre equipment, the ultra-advanced science paraphernalia. Now he hears a CREAK. He spins. His voice quavers. YOUNG PROFESSOR I.A.C. ..? His flashlight finds a thing: a translucent ball perched atop a corroding pyramid shape. It appears inanimate. YOUNG PROFESSOR (cont'd) Answer me. And finally, from within the ball, a faint alow. Slyly: BALL How can I? You unplugged me, Jor- El ... Remember? Recall? The Young Professor -- JOR-EL -- looks visibly shaken. y*fi^*\ (CONTINUED) CONTINUED: JOR-EL I did what I had to, I.A.C.
    [Show full text]
  • The Dictionary Legend
    THE DICTIONARY The following list is a compilation of words and phrases that have been taken from a variety of sources that are utilized in the research and following of Street Gangs and Security Threat Groups. The information that is contained here is the most accurate and current that is presently available. If you are a recipient of this book, you are asked to review it and comment on its usefulness. If you have something that you feel should be included, please submit it so it may be added to future updates. Please note: the information here is to be used as an aid in the interpretation of Street Gangs and Security Threat Groups communication. Words and meanings change constantly. Compiled by the Woodman State Jail, Security Threat Group Office, and from information obtained from, but not limited to, the following: a) Texas Attorney General conference, October 1999 and 2003 b) Texas Department of Criminal Justice - Security Threat Group Officers c) California Department of Corrections d) Sacramento Intelligence Unit LEGEND: BOLD TYPE: Term or Phrase being used (Parenthesis): Used to show the possible origin of the term Meaning: Possible interpretation of the term PLEASE USE EXTREME CARE AND CAUTION IN THE DISPLAY AND USE OF THIS BOOK. DO NOT LEAVE IT WHERE IT CAN BE LOCATED, ACCESSED OR UTILIZED BY ANY UNAUTHORIZED PERSON. Revised: 25 August 2004 1 TABLE OF CONTENTS A: Pages 3-9 O: Pages 100-104 B: Pages 10-22 P: Pages 104-114 C: Pages 22-40 Q: Pages 114-115 D: Pages 40-46 R: Pages 115-122 E: Pages 46-51 S: Pages 122-136 F: Pages 51-58 T: Pages 136-146 G: Pages 58-64 U: Pages 146-148 H: Pages 64-70 V: Pages 148-150 I: Pages 70-73 W: Pages 150-155 J: Pages 73-76 X: Page 155 K: Pages 76-80 Y: Pages 155-156 L: Pages 80-87 Z: Page 157 M: Pages 87-96 #s: Pages 157-168 N: Pages 96-100 COMMENTS: When this “Dictionary” was first started, it was done primarily as an aid for the Security Threat Group Officers in the Texas Department of Criminal Justice (TDCJ).
    [Show full text]