Autoren:	Nothhelfer, Steven Albrecht-Schönzart, Thomas E. Block, Michael Chhetri, Premaditya Düllmann, Ch. E. Ezold, Julie G. Gadelshin, Vadim Gaiser, Alyssa Giacoppo, F. Heinke, Reinhard Kieck, Tom Kneip, Nina Laatiaoui, Mustapha Mokry, Ch. Raeder, Sebastian Runke, Jörg Sperling, Joseph Michael Thörle-Pospiech, P. Trautmann, Norbert Weber, Felix Wendt, Klaus Schneider, Fabian Studer, Dominik
Titel:	Nuclear structure investigations of 253−255 Es by laser spectroscopy
Online-Publikationsdatum:	3-Mai-2023
Erscheinungsdatum:	2022
Sprache des Dokuments:	Englisch
Zusammenfassung/Abstract:	Laser resonance ionization spectroscopy was performed on the rare einsteinium isotopes 253−255Es at the RISIKO mass separator in Mainz. With low sample sizes ranging down to femtograms, the prominent 352 nm-ground-state transition was measured in all three einsteinium isotopes, and four additional groundstate transitions were measured in 254Es. Hyperfine-structure analysis resulted in assigned spin values of I(254Es) = 7 and I(255Es) = 7/2. From the extracted coupling constants, nuclear magnetic dipole moments of μI (254Es) = 3.42(7) µN and μI (255Es) = 4.14(10) µN as well as spectroscopic electric quadrupole moments of Qs(254Es) = 9.6(1.2) eb and Qs(255Es) = 5.1(1.7) eb were derived. Our value for 254Es deviates from the value of |μI (254Es)| = 4.35(41) µN extracted from the angular anisotropy of α-radiation emitted by 254Es.
DDC-Sachgruppe:	530 Physik 530 Physics
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 08 Physik, Mathematik u. Informatik Helmholtz Institut Mainz
Veröffentlichungsort:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-8884
Version:	Published version
Publikationstyp:	Zeitschriftenaufsatz
Weitere Angaben zur Dokumentart:	Scientific article
Nutzungsrechte:	CC BY
Informationen zu den Nutzungsrechten:	https://creativecommons.org/licenses/by/4.0/
Zeitschrift:	Physical Review C 105
Seitenzahl oder Artikelnummer:	L021302
Verlag:	American Institute of Physics
Verlagsort:	Woodbury, NY
Erscheinungsdatum:	2022
ISSN:	2469-9993
DOI der Originalveröffentlichung:	10.1103/physrevc.105.l021302
Enthalten in den Sammlungen:	DFG-491381577-H