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Some ENSDF Issues

Some ENSDF Issues. Alejandro Sonzogni National Nuclear Data Center Brookhaven National Laboratory. Implicit uncertainties For instance if BR = 1, we assume BR = 1 +- 0, and so on:. NT=1. BR=1. NB=1. IG=100. IB=100. This leads to

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Some ENSDF Issues

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  1. Some ENSDF Issues Alejandro Sonzogni National Nuclear Data Center Brookhaven National Laboratory

  2. Implicit uncertainties For instance if BR = 1, we assume BR = 1 +- 0, and so on: NT=1 BR=1 NB=1 IG=100 IB=100 This leads to IG=79.74 14 %, and the uncertainty is really a lower limit.

  3. Over-determined quantities For instance, we give NR, NT, IG and TI Which value we use of absolute gamma uncertainty? 5 % or 0.14 % This problem gets ugly when we give BR, NB and BRNB For instance: BR=0.40 5, NB=2.5, BRNB=1 Also, BR and DBR is given at least twice in the file, in the adopted levels as a continuation record (multiplied by 100) and in the parent record. The disagreement between these numbers has been observed.

  4. Sum of beta and EC intensities Ideally, S IB = 100 BR This, however, happens rarely… FMTCHK doesn’t warn about the excess or missing intensity For EC/B+ decay datasets one could have I(511 keV) > 2!

  5. Conclusions Some annoying issues in ENSDF make the conversion to numerical values harder. We have outgrown the format and the software tools we use. Any future format should address these issues, as well as the atomic radiation one. Let’s discuss.

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