Cross section data, how to fill in the gaps?

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SUMMARY

The discussion centers on the challenges faced by Marlin in obtaining production rates for the nuclear reactions 18O(p,n)18F and 20Ne(d,alpha)18F, specifically between 1 MeV and 2.5 MeV. Marlin utilized the National Nuclear Data Center (NNDC) interface for extracting ENDF data but encountered limitations with available isotopes. Suggestions for alternative data sources included the EXFOR/CSISRS Experimental Nuclear Reaction Data tool, which offers comprehensive data and plotting capabilities. The conversation highlights the need for accessible neutron cross-section data to estimate transmutation rates effectively.

PREREQUISITES
  • Understanding of nuclear reaction terminology, specifically isotopes and cross sections.
  • Familiarity with the ENDF (Evaluated Nuclear Data File) format and its applications.
  • Knowledge of data extraction tools like the NNDC interface.
  • Basic principles of nuclear transmutation and reaction rates.
NEXT STEPS
  • Explore the capabilities of the EXFOR/CSISRS Experimental Nuclear Reaction Data tool.
  • Research neutron cross-section data and its relevance to proton and deuteron reactions.
  • Investigate alternative databases for nuclear reaction data, such as the IAEA's Nuclear Data Section.
  • Learn about the implications of isotopic variations in nuclear reactions and their impact on production rates.
USEFUL FOR

Nuclear physicists, researchers in nuclear engineering, and anyone involved in the study of nuclear reactions and data analysis will benefit from this discussion.

Strat-O
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I wanted information on the 18F production rates of 18O(p,n)18F compared to 20Ne(d,alpha)18F. I found a 1979 graph that showed some nice curves between 2.3 and 22 MeV but I wanted to see what things looked like between 1 MeV and 2.5 MeV. So I went here:
http://www.nndc.bnl.gov/sigma/index.jsp?as=16&lib=endfb7.0&nsub=10010

and found a neat interface for extracting ENDF data (plus other data sources). However, when I selected "deuteron reactions", the only available data was for H, He and Li! And when I selected "proton reactions" while Oxygen was available it was only for 16O, not the 18O isotope.

Any suggestions for data alternatives? There is a lot of data on neutron cross sections. Is this neutron data useful for getting reasonable transmutation estimates for p or d?

Thanks,

Marlin
 
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This tool looks like it can give me the data I'm looking for, plus it makes plots which was another part of my goal: EXFOR/CSISRS Experimental Nuclear Reaction Data.
http://www.nndc.bnl.gov/exfor/index.htm

Marlin
 
Last edited by a moderator:

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