High-precision mass and β- decay Q-value measurement of 129Sb and its isomer
M Winter, Z Ge, T Eronen, A Kankainen, P Ascher, O Beliuskina, A de Roubin, M Flayol, M Gerbaux, W Gins, S Grévy, M Hukkanen, A Husson, A Jaries, A Jokinen, I D Moore, D A Nesterenko, A Raggio, J Ruotsalainen, J Romero, M Stryjczyk, V A Virtanen, A Zadvornaya · 2026
Read High-precision mass and β- decay Q-value measurement of 129Sb and its isomer by M Winter, Z Ge, T Eronen, A Kankainen, P Ascher, O Beliuskina, A de Roubin, M Flayol, M Gerbaux, W Gins, S Grévy, M Hukkanen, A Husson, A Jaries, A Jokinen, I D Moore, D A Nesterenko, A Raggio, J Ruotsalainen, J Romero, M Stryjczyk, V A Virtanen, A Zadvornaya (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13290990.txt.
Description
Inside a Finnish trap facility, M Winter and a large physics team report a 2026 precision measurement of antimony-129 and its isomer. Mass and decay energy values for this short-lived isotope matter for tests linked to the mass of the electron antineutrino, where very low decay energies are prized.
Atoms made and separated at the IGISOL facility were weighed with the JYFLTRAP double Penning trap, giving a decay energy far sharper than the older adopted value. Five decay branches once seen as possible ultra-low cases now sit too high in energy to qualify, closing that route. A separate branch from the isomeric state lands near the ultra-low range, though its spin and parity likely block the decay in practice.
Catalog record
| CREATOR | M Winter, Z Ge, T Eronen, A Kankainen, P Ascher, O Beliuskina, A de Roubin, M Flayol, M Gerbaux, W Gins, S Grévy, M Hukkanen, A Husson, A Jaries, A Jokinen, I D Moore, D A Nesterenko, A Raggio, J Ruotsalainen, J Romero, M Stryjczyk, V A Virtanen, A Zadvornaya |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 23216 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |