ISOLDE Workshop and Users meeting 2022

Session

Heavy Nuclei

30 Nov 2022, 09:20

503/1-001 - Council Chamber (CERN)

Conveners

Heavy Nuclei

• Peter Butler (University of Liverpool (GB))

66. Ab initio advances for open-shell and heavy nuclei

Achim Schwenk (TU Darmstadt)

30/11/2022, 09:20

Invited (online)

In the physics of nuclei there have been rapid advances combining innovative ab initio many-body methods with nuclear forces based on chiral effective field theory. This talk will focus on ab initio calculations based on the in-medium similarity renormalization group (IMSRG), which has enabled systematic calculations of nuclei up to 100 nucleons, first global ab initio calculations of nuclei...

37. First observation of the radiative decay of Thorium-229 low-lying isomer

Premaditya Chhetri (KU Leuven (BE))

30/11/2022, 09:50

Submitted oral (In person)

Owing to its very low excitation energy the isomer of thorium-229 has been proposed as a candidate for a possible future frequency standard, a nuclear clock and is expected to outperform the current atomic clocks [1,2]. Currently, the best values of the excitation energy are 8.28(17) eV and 8.10(17) eV [3,4]. These were measured using two different techniques where the population of the isomer...

17. N=126 Kink in Mean-square Charged Radii of Tl Isotopes Studied by In-source Laser Spectroscopy at IDS/RILIS-ISOLDE

Zixuan Yue (University of York (GB))

30/11/2022, 10:05

Submitted oral (In person)

Zixuan Yue - University of York, on behalf of LOI219, RILIS and IDS collaborations

It is well-known that there is a kink in nuclear charge radii when crossing the magic number N=126. This phenomenon has been observed in the Hg(Z=80), Pb (Z=82) and Bi (Z=83) isotopes [1]. At present, the charge radii of Tl (Z=81) isotopes are only known up to 208Tl (N=127). In order to observe such a kink...

54. Single-particle state evolution along the N = 127 isotone chain using the $d$(${}^{212}$Rn,$p$)${}^{213}$Rn reaction

Daniel Clarke (University of Manchester (GB))

30/11/2022, 10:20

Submitted oral (In person)

The study of single-particle states can provide insight into properties of nuclear structure. In light neutron-rich systems, features of single-particle states along isotonic chains have highlighted changes in shell closures, such as the weakening of N = 20 and formation of N = 16 [1, 2]. In heavier closed-shell stable nuclei, trends have been seen in the behaviour of high-j states from the...