From 0f56445820e4d196a8a5c89f7f5ed3eb8d361a87 Mon Sep 17 00:00:00 2001 From: Paul Kienzle Date: Tue, 23 Dec 2025 18:46:38 -0500 Subject: [PATCH 1/2] Use NUBASE2020 for half-life data --- activation/index.html | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/activation/index.html b/activation/index.html index 0a1bfea..c8ad686 100644 --- a/activation/index.html +++ b/activation/index.html @@ -1031,6 +1031,7 @@

Thermal flux

handbook (IAEA 1987), and the scattering calculator uses the IUPAC 2021 atomic weights and isotope composition database (CIAAW 2021). + Half-life values come from NUBASE2020 (Kondev 2021).

For very high fluences, e.g., more than 1016 n/cm2, the activation @@ -1392,12 +1393,23 @@

References

Williams & Wilkins, Baltimore. [activation data] +
  • + Kondev, F.G.; Wang, M.; Huang, W.J.; Naimi, S. and Audi, G. (2021). + The NUBASE2020 evaluation of nuclear physics properties. + Chin. Phys. C45, 030001. + doi:10.1088/1674-1137/abddae + [half-life data] +

    • History

    +
    2026-01-xx v2.1.0
    +
    Use half-life from NUBASE2020. The following isomers change by 20% or more: +
    32Si, 38Clm, 41Ca, 79Se, 97Tc, 108Ag, 121Snm, 126Sn, 135Cs, 157Tb, 177Lum +
    2025-04-23 v2.0.0
    Fix sort by half-life with units of ky, My, Gy.
    2025-02-28 v2.0.0
    From 9e1d8311f220f69e4d10e9e8e1922b61d2c953ee Mon Sep 17 00:00:00 2001 From: Paul Kienzle Date: Fri, 27 Feb 2026 17:26:14 -0500 Subject: [PATCH 2/2] update changelog to include recent b_c updates --- activation/index.html | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/activation/index.html b/activation/index.html index c8ad686..bdedc8c 100644 --- a/activation/index.html +++ b/activation/index.html @@ -1406,9 +1406,11 @@

    References

    History

    -
    2026-01-xx v2.1.0
    +
    2026-02-27 v2.2.0
    Use half-life from NUBASE2020. The following isomers change by 20% or more: -
    32Si, 38Clm, 41Ca, 79Se, 97Tc, 108Ag, 121Snm, 126Sn, 135Cs, 157Tb, 177Lum + 32Si 38Clm 41Ca 79Se 97Tc 108Ag 121Snm 126Sn 135Cs 157Tb 177Lum +
    Update neutron cross sections for + 13C Li 6Li 7Li 141Pr Nd 142-146,148,150Nd 144,147-150,152,154Sm 153Eu 174Yb
    2025-04-23 v2.0.0
    Fix sort by half-life with units of ky, My, Gy.
    @@ -1416,9 +1418,9 @@

    History

    Use standard year as 365 rather than 365.2425 days when reporting decay time.
    2024-12-03 v2.0.0
    Update mass and abundance tables, and physical constant values -
    neutron cross section updates for H, He, C, O, Zn, Kr, Sn, Xe, Sm, Eu, Ir, Pb, Bi -
    X-ray cross section updates for Pt, Cr, Nb, Y, Er -
    208Pb activation scaled by 0.001 (value was reported in mbarns but added as barns) +
    Update neutron cross section for H, He, C, O, Zn, Kr, Sn, Xe, Sm, Eu, Ir, Pb, Bi +
    Update X-ray cross section for Pt, Cr, Nb, Y, Er +
    Update activation for 208Pb (reference value is in mbarns instead of barns)
    2024-03-22 v1.7.0
    Mixture formulas allow wt% and vol%.
    Formulas allow unicode subscripts such as H₂O.