1. POINT2026
xxENDF/B-VIII.1
xxxxxxxNeutron Dataxxx
xSeptember 2026
 OverView
xxxWebsite xx
Neutron Data
xResonances Reconstructedxxxx
xandx
xxTemperature Dependentxx
xxPREPRO2026
ENDF Pre-Processing
xCodes
June 2026
xxOverviewxx
Websitexx
ALL of the FORTRAN ENDF Utility
Codes you need to Prepare ENDF Data  

EPICS2025xxx
Electron-Photon Datax
May 2025xxx
Overviewx
Websitex
xData Format Updated for
C, C++, FORTRAN Comatabilityxx

PLOTTAB2025
November 2025xxx
Overviewx
Websitex
General Purpose PLOTS
on-screen or hardcopy

xUNFOLDxxx
Cross Sectionsx
October 2023xxx
 We do not need MT=5 for
Simple Cross Sections at
Low Energy
 
 

xxxxSelf-Shielding
xxxxxin the x
xxxUnresolved xx
Resonance Rangexx
xDecember 2020x  
A Survey of
ENDF/B-VIII
Resonance Parameters
(MF=2)
November 2020xx
xx Everything you always wanted
to know, but were afraid to ask

March 2019
Everything You Wanted to Know About
Neutron Resonance Self-Shielding,
But Were Afraid to Ask
ENDF/B-VIII versus VII
1) Report: What's Different?
2) Plots of Differences in Total
 
 
 
2015
Unresolved Resonance
Region (URR)
Self-Shielding
Paper or PowerPoint
2016
URR-Pack
Report

Code Package   

 
 
 
 
 
 
 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Welcome to
Red Cullen's
Personal Website
xxxxYou are Visitor Number
136,511

Updated November
2026
A Lot has changed Recently
ALL FREELY Available On-line
at NO COST to you the User
Elinor Cullen
Obituary
 
Must see Monte Carlo Must see
Developer's Calendar
xxxby
Valeria Raffuzzi
xxThis is so clever and so much fun I
highly recommended that you view it
xx----- Particularly December -----

Vietnam and Cambodia
Memory Lane (2008)

User Feedback is so IMPORTANT
Most improvments in our data and codes
is based on USER FEEDBACK.
ALL feedback - pro & con - HELPS
PLEASE send Dermott Cullen copies of
ALL reports and useful results
WE ARE ALL IN THIS TOGETHER,
so PLEASE HELP ALL OF US
e.mail redcullen1@comcast.net

Zorro
Follow the Adventures of Zorro
our Portuguese Water Dog
from his birth until he crossed the
Rainbow Bridge

Introducing the NEWEST member of
the Cullen Family
LUNA
Our new Portuguese Water Dog
  
 
 
 
 
 
 
xxxxThe Accuracy of
Multi-Group Neutron Transort Codesxx
If you create or use ENDF
data you better read this

 ENDF Precision
If you use ENDF
you better read this
ENDL Precision
If you use ENDL
you better read this

ENDF-EXFOR
2026x
Overview

Website

Interactive Comparison of
Evaluated (ENDF) and
Measured (EXFOR)
Nuclear Data
Resonance

Self-Shielding

Why is it so
IMPORTANT

Correct Interpretation
of ENDF-102
xxxDefinitions for
Resonance Effects


xDoppler

Broadening

xxand Other

Temperatrure
xxEffects
 
 Monte CarloStatistical Convergence

 We are in no rush

for the WRONG answer

TART 2022
Monte Carlo Code
TART 2022: An Overview of

A Coupled Neutron, Photon,

3-D,Combinatorial Geometry,

Time Dependent Monte Carlo

Transport Code",
LLNL-SM-835527, May 2022
 

Overview

Runs on ANY computer
and is INCREDILY FAST!!
 
FREELY Available
Locally at LLNL
Nationally through RSICC
Internationally through NEA/DB 

What's Wrong with ENDF/B?
More important, how can we FIX it?
 
A NEW Series aimed at IMPROVING
ENDF/B Data.
 
Do we need a new ENDF/B Format?
Handbook of
Nuclear Engineering
now Available  
  
A Pulsed Sphere
Tutorial
January 2017
 
  
 
  
Overview

This website will direct you to work by Red Cullen

The reports included here are a small selection of the many Red Cullen reports.
For a complete list of my reports see my Resume
Many more reports are available on-line through the
Livermore (LLNL) Library
U.S.D.O.E.'s Office and Scientific and Technical Information (OSTI)
at either site search for author cullen, to find hundreds of on-line reports.
Table of Contents
Resume (updated November 2026)
Nuclear and Atomic Data and Codes
Tutorials, Papers and Presentations
TART 2022: Description and Documentation
Register as a User
User feedback
 
Register as a User and Stay Up-to-Date Click Here
Author's Message - I try to maintain my codes and data as up-to-date as possible. So if you are using any of my codes
or data it is important that you tell me, so that I can put you on my distribution list to inform you of updates. This
xxxxis a FREE!!! Service that I provide to users of my codes or data. I've tried to make this as easy as possible for you -
PLEASE take a moment to e.mail me redcullen1@comcast.net and tell me what you are using - it's as simple as that.
 
WARNING - If you do not inform me, any of my codes and data that you are using will quickly be out-of-date, and you will
xxxxxxxhave nobody to blame but yourself. So again, PLEASE contact me redcullen1@comcast.net and tell me what
xxxxxxxxxxxyou are using.

User feedback is VERY IMPORTANT! Does this site meet your needs? If not, why not?
Please let me know redcullen1@comcast.net and I'll try to update this site to better meet your needs.
Website Designed by Red Cullen: redcullen1@comcast.net
Dr. Dermott E. Cullen
1466 Hudson Way
Livermore, CA 94550
U.S.A.
cell: 925-321-4177