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The El Capitan supercomputer will give complex high-fidelity modeling, artificial intelligence and simulation an exascale boost. Learn how it will support national security and stockpile stewardship.
We support diverse research activities with talented staff, state-of-the-art facilities and core competencies. From internal collaboration to external partnerships, we work together to advance scientific discovery.
The El Capitan supercomputer will give complex high-fidelity modeling, artificial intelligence and simulation an exascale boost. Learn how it will support national security and stockpile stewardship.
Nuclear Physics and
Medical Imaging
Greg Mitchell
[email protected]
Department of Biomedical Engineering
In Vivo Biomedical Imaging
Anatomic!
Physiologic!
Metabolic!
Molecular!
ultrasound
x-ray CT!
MRI!
PET/SPECT!
optical imaging!
1
Probing Tissue with Radiation
c = #"
Wavelength (m)
E = h" = hc /#
Frequency (Hz)
!
MRI
Optical
X-ray/CT
Nuclear
WHAT IS
NUCLEAR IMAGING?
2
NUCLEAR IMAGING
• Imaging the distribution of radioactively
tagged substances that are introduced
into a living subject
• The radiolabeled agents that are injected
are called
– Radiotracers (or just tracers for short)
– Radiopharmaceuticals
– Probes
BRIEF HISTORY
3
1896: DISCOVERY OF RADIOACTIVITY
HENRI BECQUEREL - NOBEL PRIZE 1903
(IMAGING!)
1923: FIRST USE OF RADIOACTIVE TRACER
GEORG DE HEVESY - NOBEL PRIZE 1943
1923:
212Pb
to
study
absorp3on
and
transloca3on
of
lead
nitrate
in
bean
plants
1935:
32P
-‐
first
use
of
ar3ficially
produced
radioisotopes
1942:
in
vitro
labeling
of
red
blood
cells
4
1930’s: DEVELOPMENT OF THE CYCLOTRON
ERNEST O ...
The Quest for Superheavy
Elements
W. Loveland
Oregon State University
The “menu”
• Why are heavy elements important?
» -General
» -Chemistry
• The evolution of the Periodic Table
• Central Issues
– How do you make new heavy nuclei?
» General
» Detailed
– How do you do chemistry on short-lived rare species?
• The Way Forward
– Synthesis of new heavy nuclei
– New/Old Ways to do Chemistry
Importance of Heavy Element
Research
• A laboratory to study nuclear
structure and dynamics under the
influence of large Coulomb forces
• High profile research
• Results deal with fundamental
principles of chemistry and physics
Spectacular Advances of the Past
Fifteen Years
• Discovery of elements 110,111,112,
113,114,116
• Synthesis of elements 113, 115, 117 and
118 by “hot fusion” reactions
• First chemistry of elements 106-114
The philosophy of the Periodic
Table of the Chemical Elements
• The Periodic Table is NOT a list of
chemical elements in order of their
atomic numbers ...
REFERENCE
H. D. SMYTH, ATOMIC ENERGY FOR MILITARY
PURPOSES (PRINCETON
UNIVERSITY PRESS, PRINCETON, NEW JERSEY, 1945), PP.98,143.
19
Atomic Energy
for Military
Purposes
The Official Report
on the Development of the Atomic Bomb
under the Auspwes
of the United States Government,
1940-l 945
By HENRY DEWOLF SMITH
CHAIRMAN,
DEPARTMENT
PRINCETON
CONSULTANT,
OF PHYSICS
UNIVERSITY
MANHATT ...
NNSADNN University Consortia Consortia Home Projects Researchers Student Resources Lab Capabilities FAQ Previous Next LLNL supports several University Consortia to help build the pipeline of talent for the next generation of nuclear national security technical experts The goal is to bridge the academic ...
Celebrating the Life and Contributions of Johnny Foster Foster recalled the formation of a Livermore branch of the University of California Radiation Laboratory in Berkeley The Radiation Laboratory was later renamed the Ernest O Lawrence Radiation Laboratory after the death of Lawrence in 1959 In the ...
Research Highlights
S&TR July/August 2013
Celebrating the Life and
E
MPLOYEES, retirees, and friends of Lawrence Livermore
gathered earlier this year to celebrate the achievements
of one of the Laboratory’s pioneering scientists and greatest
leaders. Recognized for six decades by presidents from Dwight
D ...
LLNL-AR-857793
Report on Foreign Travel to
Niagara Falls, Canada
E. Aboud
November 30, 2023
Disclaimer
This document was prepared as an account of work sponsored by an agency of the United States
government. Neither the United States government nor Lawrence Livermore National Security, LLC,
nor any of their employees makes any warranty, expressed or implied, or assumes any legal liability or
responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or
process disclosed, or represents that its use would not infringe privately owned rights ...
L a w r e n c e
L i v e r m o r e
N a t i o n a l
L a b o r a t o r y
October/November 2011
Also in this issue:
Light Deflector Garners Award
Award-Winning Debugging Tool
Plutonium Transport Demystified
Thanks to a technology transfer agreement, a
proton beam that is highly focused on a tumor and
creates only low-dose side effects in surrounding
tissue may begin to appear in hospitals in 2014 ...
Cognitive Simulation:
combining simulation and experiment with artificial
intelligence
October 12, 2020
University of California, Santa Cruz
LLNL-PRES-757656
This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory
under contract DE-AC52-07NA27344 ...
PNL-SA-4868 Rev. 5
ANOMALIES OF NUCLEAR CRITICALIN
E. 0. Clayton
June 1979
Pacific
Northwest Laboratory
Richland,
Washington
99352
Rev. # 5
June,
1979
ANOMALIES OF NUCLEAR CRITICALITY
E. D. Clayton
CONTENTS
Page
i
LIST OF FIGURES
iv
LIST OF TABLES
V
ABSTRACT
A.
INTRODUCTION
1
B.
CONCEPTSAND COMPLEXITY OF CRITICALITY
1
1 ...