What question did this study set out to answer?

The aim is to study excited states of neutron-deficient actinium isotopes and establish their level schemes.

April 1, 2026Open Access

Probing the Structure of Neutron-deficient Actinium Isotopes in JYFL-ACCLAB

Key Points

The aim is to study excited states of neutron-deficient actinium isotopes and establish their level schemes.
Conducted fusion-evaporation reactions at RITU and MARA separators.
Measured prompt gamma-ray transitions using the JUROGAM3 spectrometer.
Focused on delayed spectroscopy of 207Ac to establish its level scheme.
Level schemes were established for odd-A isotopes of actinium.
Findings were compared to the systematics of nearby astatine and francium nuclei.
Excited states of even-even isotone cores were analyzed for further insight.

Abstract

Excited states of the \ (^207-213 Ac\) nuclei were studied by employing fusion–evaporation reactions at the RITU and MARA separators of the Accelerator Laboratory of the University of Jyväskylä, Finland. In three of the four conducted experiments prompt \ (\) -ray transitions were measured by employing the JUROGAM3 spectrometer, while the fourth experiment focused on delayed spectroscopy of \ (^207 Ac\). Level schemes were established for odd-\ (A\) isotopes, and those are compared to the systematics set by nearby astatine and francium nuclei, as well as to the excited states of the respective even–even isotone cores. Abstract Published by the Jagiellonian University 2026 authors

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Cite This Study

Auranen et al. (Tue,) studied this question.

synapsesocial.com/papers/69cd7a915652765b073a7cbb https://doi.org/https://doi.org/10.5506/aphyspolbsupp.19.1-a27

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