TY  - JOUR
A1  - Pietralla, Norbert
A1  - Walz, Christopher
A1  - Scheit, Heiko
A1  - Aumann, Thomas
A1  - Lefol, Ronan
A1  - Ponomarev, V. Ju.
T1  - First observation of the competitive double-gamma (“γγ/γ”) decay process
T2  - The European physical journal. Web of Conferences
N2  - 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.
Y1  - 2016
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/70610
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-706102
SN  - 2100-014X
N1  - 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.
VL  - 107
IS  - art. 03002
SP  - 1
EP  - 6
PB  - EDP Sciences
CY  - Les Ulis
ER  -