TY  - JOUR
A1  - Romig, Christopher
A1  - Savran, Deniz
A1  - Beller, Jacob
A1  - Birkhan, Jonny
A1  - Endres, Anne
A1  - Fritzsche, Matthias
A1  - Glorius, Jan
A1  - Isaak, Johann
A1  - Pietralla, Norbert
A1  - Scheck, Marcus
A1  - Schnorrenberger, Linda
A1  - Sonnabend, Kerstin
A1  - Zweidinger, Markus
T1  - Direct determination of ground-state transition widths of low-lying dipole states in ¹⁴⁰Ce with the self-absorption technique
T2  - Physics Letters B
N2  - The technique of self absorption has been applied for the first time to study the decay pattern of low-lying dipole states of 140Ce. In particular, ground-state transition widths 0 and branching ratios 0/ to the ground state have been investigated in the energy domain of the pygmy dipole resonance. Relative self-absorption measurements allow for a model-independent determination of 0. Without the need to perform a full spectroscopy of all decay channels, also the branching ratio to the ground state can be determined. The experiment on 140Ce was conducted at the bremsstrahlung facility of the superconducting Darmstadt electron linear accelerator S-DALINAC. In total, the self-absorption and, thus, 0 were determined for 104 excited states of 140Ce. The obtained results are presented and discussed with respect to simulations of γ cascades using the DICEBOX code.
KW  - Self absorption
KW  - Nuclear resonance fluorescence
KW  - Gamma spectroscopy
KW  - Ground-state transition width
KW  - Pygmy dipole resonance
Y1  - 2015
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/54696
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-546964
SN  - 1873-2445
SN  - 0370-2693
VL  - 744.2015
SP  - 369
EP  - 374
PB  - Elsevier
CY  - Amsterdam
ER  -