American Nuclear Society
Home

Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 116 / Number 2 / Pages 113-124

A Monte Carlo Variance Reduction Approach for Non-Boltzmann Tallies

Thomas E. Booth

Nuclear Science and Engineering / Volume 116 / Number 2 / Pages 113-124

February 1994

Format:

Price:$30.00
Member Price:$27.00
Member Savings:$3.00

Quantities that depend on the collective effects of groups of particles cannot be obtained from the standard Boltzmann transport equation. Monte Carlo estimates of these quantities are called non-Boltzmann tallies and have become increasingly important recently. Standard Monte Carlo variance reduction techniques were designed for tallies based on individual particles rather than groups of particles. Experience with non-Boltzmann tallies and analog Monte Carlo has demonstrated the severe limitations of analog Monte Carlo for many non-Boltzmann tallies. In fact, many calculations absolutely require variance reduction methods to achieve practical computation times. A description is given of how variance reduction techniques can be applied when non-Boltzmann estimates are desired.

 
 
 
Questions or comments about the site? Contact the ANS Webmaster.
advertisement