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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.
Jan 9 2009 The 2008 in review issue of Newsline appeared in print pdf The text from this issue appears below Download Image The 2008 in review issue of Newsline appeared in print pdf Download Image The 2008 in review issue of Newsline appeared in print pdf Download Image Previous Next Special Newsline ...
ii
PNNL-19176
ANOMALIES OF NUCLEAR CRITICALITY, REVISION 6
E. D. Clayton
Edited by
A. W. Prichard, B. M. Durst, D. G. Erickson and R. J. Puigh
February 2010
Pacific Northwest Laboratory
Richland, Washington 99352
iii
PNNL-19176
ANOMALIES OF NUCLEAR CRITICALITY, REVISION 6
E. D. Clayton
Page
CONTENTS
LIST OF FIGURES
vii
LIST OF TABLES
x
A
INTRODUCTION
1
B
PHYSICAL; CHARACTERISTICS
2
C
CONCEPTS AND COMPLEXITY OF CRITICALITY
5
1 ...
SampTR Past Issues The following is a list of all theScience and Technology Review andEnergy and Technology Reviewarticles online March 1994present with articlepdf links To find an article quickly use your Find tool and type in a key word or part of the title 20242023202220212020201920182017201620152014201320122011201020092008 ...
December 2007
National Nuclear
Security Administration’s
Lawrence Livermore
National Laboratory
Also in this issue:
• Unlocking the Secrets at Earth’s Core
• Improved Security for Wireless Communication
• Teller’s Legacy in Nuclear Power Research
About the Cover
National Nuclear
Security Administration’s
Lawrence Livermore
National Laboratory
Also in this issue:
• Unlocking the Secrets at Earth’s Core
• Improved Security for Wireless Communication
• Teller’s Legacy in Nuclear Power Research
Cover design: Alexandria Ballard ...
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
June 2011
Also in this issue:
Could Comet Impacts Generate Life?
Fabricating a Ribbon of Optical Light
Improved Imaging for Aviation Security
Renewing its talented workforce has been a key
to Lawrence Livermore’s success and longevity,
and the Postdoc Program, described in the article
beginning on p ...
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
June 2011
Also in this issue:
Could Comet Impacts Generate Life?
Fabricating a Ribbon of Optical Light
Improved Imaging for Aviation Security
Renewing its talented workforce has been a key
to Lawrence Livermore’s success and longevity,
and the Postdoc Program, described in the article
beginning on p ...
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
March 2014
Also in this issue:
Light, Compact Neutron Detection
Biosecurity in a Chip
Improving Nuclear Fuel Burnup
Over the years, radiochemistry has proven to
be a vital field for research innovation in support
of Livermore’s national security mission ...
April 2004
National Nuclear
Security Administration’s
Lawrence Livermore
National Laboratory
Also in this issue:
• Yucca Mountain’s Engineered
Barrier System
• Controlling Combustion for a
Cleaner, More Efficient Engine
A Livermore team is developing DNA and protein
signatures for pathogens and deploying validated assays
in the field as part of the national effort to defend
against bioterrorism ...
January/
February 2001
U.S. Department of Energy’s
Lawrence Livermore
National Laboratory
This issue of S&TR pays tribute to Roger
Batzel, the Laboratory’s sixth and longesttenured director (1971–1988). Batzel died on
July 29, 2000, at the age of 78. He was an
extraordinary leader, deeply respected personally
and for the significant growth and achievement
he fostered in Laboratory missions ...
July/August 1998
Lawrence
Livermore
National
Laboratory
Celebrating
Edward Teller
at 90
About the Cover
July/August 1998
Lawrence
On the occasion of Edward Teller’s 90th
birthday, S&TR has the pleasure of honoring
Lawrence Livermore’s co-founder and most
influential scientist. Teller is known for his
inventive work in physics, his concepts leading
to thermonuclear explosions, and his strong
stands on such issues as science education, the
nation’s strategic defense, the needs for science
in the future, and sharing scientific information ...