TY - JOUR
T1 - A new avenue in the search for CP violation
T2 - Mössbauer spectroscopy of 227 Ac
AU - Scheck, Marcus
AU - Chapman, Robert
AU - Dobaczewski, Jacek
AU - Ederer, Claude
AU - Ivanov, Peter
AU - Lorusso, Guiseppe
AU - O’Donnell, David
AU - Schröder, Christian
N1 - Funding Information:
The authors would like to dedicate this article to the memory of the late Professor Dr. Ulrich Kneissl. As a teacher, he introduced two of the authors (MS and CE) to the secrets of Mössbauer spectroscopy; as a distinguished scientist and academic father of the corresponding author, he provided the foundations for the experimental ideas outlined in this contribution. We acknowledge financial support by the UK-STFC Grant Nos. ST/P005101/1, ST/P003885/1, and ST/V001035/1, by the Polish National Science Centre under Contract No. 2018/31/B/ST2/02220, and by a Leverhulme Trust Research Project Grant. We acknowledge the CSC-IT Center for Science Ltd., Finland, for the allocation of computational resources. This project was partly undertaken on the Viking Cluster, which is a high performance computing facility provided by the University of York. We are grateful for computational support from the University of York High Performance Computing service, Viking and the Research Computing team.
Funding Information:
The authors would like to dedicate this article to the memory of the late Professor Dr. Ulrich Kneissl. As a teacher, he introduced two of the authors (MS and CE) to the secrets of Mössbauer spectroscopy; as a distinguished scientist and academic father of the corresponding author, he provided the foundations for the experimental ideas outlined in this contribution. We acknowledge financial support by the UK-STFC Grant Nos. ST/P005101/1, ST/P003885/1, and ST/V001035/1, by the Polish National Science Centre under Contract No. 2018/31/B/ST2/02220, and by a Leverhulme Trust Research Project Grant. We acknowledge the CSC-IT Center for Science Ltd., Finland, for the allocation of computational resources. This project was partly undertaken on the Viking Cluster, which is a high performance computing facility provided by the University of York. We are grateful for computational support from the University of York High Performance Computing service, Viking and the Research Computing team.
Publisher Copyright:
© 2023, The Author(s).
PY - 2023/5/26
Y1 - 2023/5/26
N2 - This work proposes a new avenue in the search for CP-violating odd-electric and even-magnetic nuclear moments. A promising candidate to find such moments in the ground state is the quadrupole-deformed and octupole-correlated nucleus 227-actinium. In this nucleus, the 27.4-keV E1 transition that connects the 3/2+ parity-doublet partner and the 3/2- ground state is perfectly suited to apply the sensitive technique of recoil-free selfabsorption, commonly known as Mössbauer spectroscopy. In this experimental approach, the lifetime of the 3/2+ upper parity-doublet partner allows an estimate of the lower limit of ΔE= 2 · Γ γ = 23.7(1) × 10-9 eV for the achievable energy resolution to be made. This resolution must be exceeded by the interaction of a CP-violating moment and the corresponding multipole moment of the field distribution in the lattice. This work presents the first ideas for patterns caused by CP-violating moments on the expected quadrupole splitting and nuclear Zeeman effect.
AB - This work proposes a new avenue in the search for CP-violating odd-electric and even-magnetic nuclear moments. A promising candidate to find such moments in the ground state is the quadrupole-deformed and octupole-correlated nucleus 227-actinium. In this nucleus, the 27.4-keV E1 transition that connects the 3/2+ parity-doublet partner and the 3/2- ground state is perfectly suited to apply the sensitive technique of recoil-free selfabsorption, commonly known as Mössbauer spectroscopy. In this experimental approach, the lifetime of the 3/2+ upper parity-doublet partner allows an estimate of the lower limit of ΔE= 2 · Γ γ = 23.7(1) × 10-9 eV for the achievable energy resolution to be made. This resolution must be exceeded by the interaction of a CP-violating moment and the corresponding multipole moment of the field distribution in the lattice. This work presents the first ideas for patterns caused by CP-violating moments on the expected quadrupole splitting and nuclear Zeeman effect.
UR - http://www.scopus.com/inward/record.url?scp=85160258605&partnerID=8YFLogxK
U2 - 10.1140/epja/s10050-023-01000-z
DO - 10.1140/epja/s10050-023-01000-z
M3 - Article
AN - SCOPUS:85160258605
SN - 1434-6001
VL - 59
JO - European Physical Journal A
JF - European Physical Journal A
IS - 5
M1 - 116
ER -