First observation of the competitive double-gamma (“γγ/γ”) decay process
- First observation of the competitive double-γ decay process is presented. It is a second-order electromagnetic decay mode. The 662-keV decay transition from the 11/2− isomer of 137Ba to its ground state proceeds at a fraction of 2 × 10−6 by simultaneous emission of two γ quanta instead of one. The observed angular correlation and energy distribution of coincident γ quanta are well described by a dominant M2 – E2 and a minor E3 – M1 contribution to the double-γ decay branch. The data were well accounted for by a calculation using the Quasiparticle Phonon Model.
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| Author: | Norbert PietrallaORCiDGND, Christopher WalzGND, Heiko ScheitORCiDGND, Thomas AumannORCiDGND, Ronan Lefol, V. Ju. PonomarevGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-706102 |
| DOI: | https://doi.org/10.1051/epjconf/201610703002 |
| ISSN: | 2100-014X |
| Parent Title (English): | The European physical journal. Web of Conferences |
| Publisher: | EDP Sciences |
| Place of publication: | Les Ulis |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2016/01/19 |
| Date of first Publication: | 2016/01/19 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Contributing Corporation: | International Conference on Nuclear Structure and Related Topics (NSRT15) |
| Release Date: | 2022/11/14 |
| Volume: | 107 |
| Issue: | art. 03002 |
| Article Number: | 03002 |
| Page Number: | 6 |
| First Page: | 1 |
| Last Page: | 6 |
| Note: | This work was partially supported also by the Helmholtz International Center for FAIR (HIC for FAIR) funded within the LOEWE initiative of the State of Hesse. |
| HeBIS-PPN: | 505731711 |
| Institutes: | Physik / Physik |
| Forschungscluster / ELEMENTS | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - CC BY - Namensnennung 4.0 International |
