Fitting elastic-scattering cross sections with coupled channels

J. R. Comfort

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


A simple method is described for searching for the optical-model parameters that produce best fits to elastic-scattering cross sections in the case where the elastic channel is coupled to other reaction channels. The back-coupling amplitudes from the nonelastic channels are obtained from the coupled-channels calculations and supplied as input to a new optical-model search code CUPID, where they are added to each calculation of the optical-model amplitudes. Iteration of the procedure converges rapidly. An interface program SUMAMP is also described. This program can also combine several sets of amplitudes that result from coupled-channel calculations with one-way couplings and convert the sum to cross sections.

Original languageEnglish (US)
Pages (from-to)35-42
Number of pages8
JournalComputer Physics Communications
Issue number1
StatePublished - Dec 1978

ASJC Scopus subject areas

  • Hardware and Architecture
  • General Physics and Astronomy


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