Journalartikel

Jahr der Veröffentlichung: 2021

Zeitschrift: Physical Review Letters

Bandnummer: 126

Heftnummer: 7

ISSN: 0031-9007

eISSN: 1079-7114

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevLett.126.072501

Verlag: American Physical Society

Abstract: 
We studied the proton-rich T-z = -1 nucleus Kr-70 through inelastic scattering at intermediate energies in order to extract the reduced transition probability, B(E2; 0+ -> 2+). Comparison with the other members of the A = 70 isospin triplet, Br-70 and Se-70, studied in the same experiment, shows a 3 sigma deviation from the expected linearity of the electromagnetic matrix elements as a function of T-z. At present, no established nuclear structure theory can describe this observed deviation quantitatively. This is the first violation of isospin symmetry at this level observed in the transition matrix elements. A heuristic approach may explain the anomaly by a shape change between the mirror nuclei Kr-70 and Se-70 contrary to the model predictions.

Harvard-Zitierstil: Wimmer, K., Korten, W., Doornenbal, P., Arici, T., Aguilera, P., Algora, A., et al. (2021) Shape Changes in the Mirror Nuclei ⁷⁰Kr and ⁷⁰Se, Physical Review Letters, 126(7), Article 072501. https://doi.org/10.1103/PhysRevLett.126.072501

APA-Zitierstil: Wimmer, K., Korten, W., Doornenbal, P., Arici, T., Aguilera, P., Algora, A., Ando, T., Baba, H., Blank, B., Boso, A., Chen, S., Corsi, A., Davies, P., de Angelis, G., de France, G., Delaroche, J., Doherty, D., Gerl, J., Gernhaeuser, R., ...Zielinska, M. (2021). Shape Changes in the Mirror Nuclei ⁷⁰Kr and ⁷⁰Se. Physical Review Letters. 126(7), Article 072501. https://doi.org/10.1103/PhysRevLett.126.072501