Sep 22 – 24, 2025
GSI
Europe/Berlin timezone

Hamiltonian of combined hyperfine interactions and its influence on the gamma-gamma angular correlations

Sep 22, 2025, 5:05 PM
2h 55m
KBW lecture hall (GSI)

KBW lecture hall

GSI

Planckstr. 1 64291 Darmstadt / Germany
Poster Annual Workshop on Ion and Particle Beams (Ionenstrahl Workshop) Posters

Speaker

Thien Thanh Dang (Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany)

Description

This work presents detailed calculations of the Hamiltonian describing the combined magnetic dipole and non-axially symmetric electric quadrupole interactions. The resulting eigenvalues and eigenvectors are incorporated into the perturbation factor G22(t) for a polycrystalline sample, as defined by time-differential perturbed angular correlation (TDPAC) theory. G22(t) spectra for the combined hyperfine interactions are generated, and some representative experimental TDPAC spectra measured for BiFeO3 are introduced to demonstrate the relevance and applicability of the theoretical model.

Author

Thien Thanh Dang (Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany)

Co-authors

Dr Daniil Lewin (Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany) Prof. Doru Constantin Lupascu (Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany) Mr Ian Chang Jie Yap (Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany) Dr Juliana Heiniger -Schell (Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany; European Organization for Nuclear Research (CERN), CH-1211 Geneva, Switzerland)

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