The ground-state-to-ground-state Q-beta-minus value of 115In was determined to 497.68(17) keV using a high precision Penning trap facility at the University of Jyvaskyla, Finland. From this, a Q-beta-minus value of 0.35(17) keV is obtained for the rare beta-minus decay to the first excited state of 115Sn at 497.334(22) keV. The partial half-life was determined to 4.1(6)E20 yr using ultra low-background gamma-ray spectrometry in an underground laboratory. Theoretical modeling of this 2nd-forbidden unique beta-minus transition was also undertaken and resulted in Q-beta-minus = 57(+19-12)eV using the measured half-life. The discrepancy between theory and experiment could be attributed to atomic effects enhanced by the low Q value. The present study implies that this transition has the lowest Q value of any known nuclear beta decay.
WIESLANDER E.;
SUHONEN J.;
ERONEN T.;
HULT Mikael;
ELOMAA V.V.;
JOKINEN A.;
MARISSENS Gerd;
MISIASZEK M.;
MUSTONEN M.T.;
RAHAMAN S.;
WEBER C.;
AEYSTOE J.;
2009-09-28
AMER PHYSICAL SOC
JRC51296
0031-9007,
https://publications.jrc.ec.europa.eu/repository/handle/JRC51296,
10.1103/PhysRevLett.103.122501,
| Name | Country | City | Type |
|---|
This document is only visible at the Commission level.
You are not authorized to publish or distribute it outside the European Commission.
This is a public document. You can share this publication.
Datasets
| ID | Title | Public URL |
|---|
Dataset collections
| ID | Acronym | Title | Public URL |
|---|
Scripts / source codes
| Description | Public URL |
|---|
Additional supporting files
| File name | Description | File type |
|---|