Talk:Isotopes of terbium

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Possible alpha decay of ¹⁵⁵Tb and ¹⁵⁷Tb

The alpha decay energy of ¹⁵⁵Tb (N = 90) is only 0.98 MeV, so the expected alpha half-life is very long. The decay energy is lower than 1.96 MeV of its alpha product ¹⁵¹Eu, 1.60 MeV of its double alpha product ¹⁴⁷Pm and 1.73 MeV of its triple alpha product ¹⁴³Pr. 129.104.241.214 (talk) 01:04, 3 March 2024 (UTC) Cristiano Toàn (talk) 05:01, 27 May 2024 (UTC) The alpha decay energy of ¹⁵⁷Tb is even lower only about 0.18 MeV thus the half-life would be very long[reply]

Terbium-174?

NUBASE2020 marks the existence of ¹⁷⁴Tb according to a 2018 paper. I don't know how to include it here with the calculated values, though. Recon rabbit 20:26, 26 August 2024 (UTC)[reply]

Terbium-149 is interesting

It is the one of the only two nuclides with Z ≤ 83 that have use in radiotherapy because their alpha decays. We know that some nuclides with Z ≤ 83 do can undergo alpha decay, but most of them either have too short or too long alpha half-lives (even ¹⁴⁸Gd with 86.9 years is too long for radiotherapy; however, ¹⁴⁸Gd can be useful in generating radiopower), or have negligible alpha decay branches.

If one check the section Radionuclides with half-lives of 1 hour to 1 day of the page List of nuclides, then they can see that only two nuclides with Z ≤ 83 in this section have significant alpha decays: one is ¹⁴⁹Tb (half-life 4.118 h, alpha branch ≈ 1/6), the other is ²¹²Bi (half-life 60.55 min, alpha branch 35.94%). 129.104.241.55 (talk) 18:37, 2 March 2025 (UTC)[reply]

See Theranostic Terbium Radioisotopes: Challenges in Production for Clinical Application and A heavy-ion production channel of ¹⁴⁹Tb via ⁶³Cu bombardment of ⁸⁹Y. 129.104.241.55 (talk) 18:58, 2 March 2025 (UTC)[reply]

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Possible alpha decay of 155Tb and 157Tb

Terbium-174?

Terbium-149 is interesting

Possible alpha decay of ¹⁵⁵Tb and ¹⁵⁷Tb