ENDF/B Pre-Processing






(Neutron Data)

(Temperature Dependent)


(Electron and Photon Data)

(Updated July 2018)


Report: What's Different?

Plots of Differences in Total

A Pulsed Sphere


January 2017


Unresolved Resonance

Region (URR)


Paper or PowerPoint




Code Package


General plotting code
















A Lot has changed


All Available FREE On-line

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Team Zorro Wins 2017 Star Award

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Coupled Neutron-Photon

Continuous Energy

3-D Geometry

Monte Cadlo Transport

2017 Update

Now FREELY Available



TART 2016

Monte Carlo Code

FREELY Available

Locally at LLNL

Nationally through RSICC

Internationally through NEA/DB 


 TART2016 Overview

now Available On-line

at LLNL Library

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  
















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 May 2018)

Nuclear and Atomic Data and Codes

Tutorials, Papers and Presentations

TART 2016: Description and Documentation

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User feedback

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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 is 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 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WARNING - If you do not inform me, any of my codes and data that you are using will quickly be out-of-date, and you will have nobody to blame but yourself. So again, PLEASE contact me and tell me what you are using.

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Dr. Dermott E. Cullen

1466 Hudson Way

Livermore, CA 94550


tele: 925-443-1911