Academic interests
I research nuclear deformation through lifetime measurements.
I'm also interested in data visualisation and scientific writing.
Courses taught
Background
- Summer 2022: CERN Summer Student Programme
- 2022: MSc in nuclear physics (UiO)
- 2020: BSc in physics (UiO)
Tags:
nuclear physics,
nuclear structure
Publications
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Pasqualato, G; Ansari, S.; Heines, Johannes Sørby; Modamio, Victor; Görgen, Andreas & Beckmann, Kristine Sønstevold
[Show all 52 contributors for this article]
(2023).
Shape evolution in even-mass <sup>98 - 104</sup> Zr isotopes via lifetime measurements using the γγ -coincidence technique.
European Physical Journal A.
ISSN 1434-6001.
59(11).
doi:
10.1140/epja/s10050-023-01172-8.
Show summary
The Zirconium (Z = 40) isotopic chain has attracted interest for more than four decades. The abrupt lowering of the energy of the first 2+ state and the increase in
the transition strength B(E2; 2+→ 0+) going from 98Zr to 100Zr has been the first example of “quantum phase transition” in nuclear shapes, which has few equivalents in the nuclear chart. Although a multitude of experiments have been
performed to measure nuclear properties related to nuclear shapes and collectivity in the region, none of the measured lifetimes were obtained using the Recoil Distance Doppler Shift method in the γγ-coincidence mode where a gate on the direct feeding transition of the state of interest allows a strict control of systematical errors. This work reports the results of lifetime measurements for the first yrast excited states in 98−104Zr carried out to extract reduced transition
probabilities. The new lifetime values in γγ-coincidence and γ -single mode are compared with the results of former experiments. Recent predictions of the Interacting Boson Model with Configuration Mixing, the Symmetry Conserving Configuration Mixing model based on theHartree–Fock–Bogoliubov approach and the Monte Carlo Shell Model are presented and compared with the experimental data.
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View all works in Cristin
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Heines, Johannes Sørby; Görgen, Andreas; Modamio, Victor; Pasqualato, G; Korten, Wolfram & Ljungvall, Joa
(2023).
Lifetime measurements show high triaxiality in ruthenium.
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Heines, Johannes Sørby; Modamio, Victor & Görgen, Andreas
(2023).
Evolution of Triaxiality in Neutron-Rich Ruthenium Isotopes
Lifetime Measurements of excited states.
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Heines, Johannes Sørby; Görgen, Andreas & Modamio, Victor
(2022).
Triaxiality in neutron-rich Ruthenium isotopes,
New lifetimes measured in Ru-109, 110, 111.
Universitetet i Oslo.
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Published
Aug. 21, 2023 9:43 AM
- Last modified
Feb. 5, 2024 2:40 PM