Talk:Isotopes of lutetium

sortin on half life

Hi, i just tried to make the isotopes sortable by (eg) half life value, but its a bit complicated, any help is appreciated! Stratoprutser (talk) 10:46, 7 April 2015 (UTC)

So sorting on half life goes with the "data-sort-values", where:

1. ns
2. µs
3. ms
4. s
5. min
6. h
7. d
8. a

...followed by a numerical value with as much significant zeroes as the largest value requires (sorting strings!), eg. data-sort-value='7(d) 006.6475' for 6.6475 days, as there's also data-sort-value='7(d) 160.44' for 160.44(6) d(ays)(^177m3Lu).

Do note that sorting doesn't go entirely flawless, due to the row and col spanning applied in the table, but its better then none :) Stratoprutser (talk) 14:44, 12 April 2015 (UTC)

Out of curiosity: can sorting handle scientific notations of numbers correctly? 129.104.241.242 (talk) 11:38, 3 May 2024 (UTC)

Why lutetium-176 is so stable

There are two problems here. The first is that ¹⁷⁶Lu has a high spin of 7−, while its decay product ¹⁷⁶Hf has a spin of 0+ like all even-even nuclei. The second is that, while ¹⁷⁶Hf has low-energy excited states with spins 6+ and 8+ that ¹⁷⁶Lu could decay to (these are only first-forbidden), the spin of ¹⁷⁶Lu is intrinsic while those of these excited states of ¹⁷⁶Hf are due to collective nuclear rotation, which results in a terrible match. Much the same thing happens with ²³⁶Np, though I imagine its half-life is a lot shorter because alpha decay to ²³²Pa is also possible for it. Double sharp (talk) 13:46, 20 July 2016 (UTC)

Not exactly for ²³⁶Np: its alpha decay branching ratio is only 0.16%. 129.104.241.214 (talk) 21:28, 24 January 2024 (UTC)

A more appropriate analogue would be ²⁴⁸Bk, whose 6⁺ spin is intrinsic while the 6⁺ spin of ²⁴⁸Cf is due to collective nuclear rotation. 129.104.241.193 (talk) 13:31, 4 May 2024 (UTC)

In any case, the longevity of ¹⁷⁶Lu has quite different machanism compared with other known non-beta-stable nuclides with beta half-life at least 10¹⁰ years. 2A01:E34:EC74:7170:C92D:3550:651:9FE3 (talk) 17:18, 5 May 2024 (UTC)

Lutetium-176 is also energically allowed to undergo alpha decay to Thullium-172, with alpha energy 1.567 MeV with projected half-live about 10^40 years. Lutetium-175 is also energically allowed to undergo alpha decay to Thullium-171, with alpha energy 1.6198 MeV with projected half-live about 10^35 years.Cristiano Toàn (talk) 02:33, 26 January 2024 (UTC) contribs) 00:31, 26 January 2024 (UTC)

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Possible alpha decay of ¹⁵²Lu

According to the Geiger-Nuttall law, ¹⁵²Lu (N = 81) should have a partial alpha decay half-life at the order of 10⁸ years, corresponding to an alpha decay probability at the order of 10^-15%. 129.104.241.214 (talk) 00:29, 28 October 2023 (UTC)