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Use NUBASE2020 for half-life data #22

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Expand Up @@ -1031,6 +1031,7 @@ <h3>Thermal flux</h3>
handbook (<a class="cite" href="#ref_IAEA">IAEA 1987</a>), and the
scattering calculator uses the IUPAC 2021 atomic weights and isotope composition
database (<a class="cite" href="#ref_CIAAW">CIAAW 2021</a>).
Half-life values come from NUBASE2020 (<a class="cite" href="#ref_Kondev2021">Kondev 2021</a>).
</p>
<p>
For very high fluences, e.g., more than 10<sup>16</sup> n/cm2, the activation
Expand Down Expand Up @@ -1392,12 +1393,23 @@ <h3>References</h3>
Williams & Wilkins, Baltimore.
[<a href="https://github.com/python-periodictable/periodictable/blob/master/periodictable/activation.dat">activation data</a>]
</li>
<li id="ref_Kondev2021">
Kondev, F.G.; Wang, M.; Huang, W.J.; Naimi, S. and Audi, G. (2021).
<em>The NUBASE2020 evaluation of nuclear physics properties.</em>
Chin. Phys. C45, 030001.
doi:10.1088/1674-1137/abddae
[<a href="https://www.anl.gov/phy/reference/nubase-2020-nubase4mas20">half-life data</a>]
</li>
</ol>
</div>

<div id="help_history" class="help">
<h3>History</h3>
<dl class="inline">
<dt>2026-01-xx v2.1.0</dt>
<dd>Use half-life from NUBASE2020. The following isomers change by 20% or more:
<br />32Si, 38Clm, 41Ca, 79Se, 97Tc, 108Ag, 121Snm, 126Sn, 135Cs, 157Tb, 177Lum
</dd>
<dt>2025-04-23 v2.0.0</dt>
<dd>Fix sort by half-life with units of ky, My, Gy.</dd>
<dt>2025-02-28 v2.0.0</dt>
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