A5056749271- Nuclear physics research studies
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Quantum Chromodynamics and Particle Interactions
- Rare-earth and actinide compounds
- Particle accelerators and beam dynamics
- Astrophysical Phenomena and Observations
- Advanced NMR Techniques and Applications
- Particle physics theoretical and experimental studies
- Gamma-ray bursts and supernovae
- Neutrino Physics Research
University of Surrey
2020-2025
TRIUMF
2020-2023
The excited states of N=44 ^{74}Zn were investigated via γ-ray spectroscopy following ^{74}Cu β decay. By exploiting γ-γ angular correlation analysis, the 2_{2}^{+}, 3_{1}^{+}, 0_{2}^{+}, and 2_{3}^{+} in firmly established. branching E2/M1 mixing ratios for transitions deexciting measured, allowing extraction relative B(E2) values. In particular, 2_{3}^{+}→0_{2}^{+} 2_{3}^{+}→4_{1}^{+} observed first time. results show excellent agreement with new microscopic large-scale shell-model...
Lead-208 is the heaviest known doubly magic nucleus and its structure therefore of special interest. Despite this magicity, which acts to provide a strong restorative force toward sphericity, it exhibit both octupole correlations some strongest quadrupole collectivity observed in systems. In Letter, we employ state-of-the-art experimental equipment conclusively demonstrate, through four Coulomb-excitation measurements, presence large, negative, spectroscopic moment for vibrational <a:math...
This Letter reports on the first cross-section measurements for Sr94(α,n)Zr97 and Kr86(α,n)Sr89 reactions. In particular, our measurement of is weak r-process reaction cross section obtained using a radioactive ion beam. experiment was enabled by use novel solid helium targets, comprised silicon thin films with high incorporation via sputtering technique. Yield were performed at center-of-mass energies 10.4 9.0 MeV reaction, 9.9 Sr94(α,n)Zr97, extending into respective Gamow energy windows...
The unique combination of AGATA ( γ -rays) and MUGAST (light charged particle) spectrometers coupled to the VAMOS magnetic spectrometer for heavy-ions using post-accelerated radioactive beams from SPIRAL1 facility at GANIL-Caen, France is presented in this contribution. selected results have been obtained between 2019 2021 during first campaign GANIL.
We have performed the first direct measurement of 83Rb(p,g) radiative capture reaction cross section in inverse kinematics using a radioactive beam 83Rb at incident energies 2.4 and 2.7 A MeV. The measured an effective relative kinetic energy Ecm = 2.393 MeV, which lies within relevant window for core collapse supernovae, is smaller than prediction statistical model calculations. This leads to abundance 84Sr produced astrophysical p process being higher previously calculated. Moreover,...
The Al25(p,γ) reaction has long been highlighted as a possible means to bypass the production of Al26 cosmic γ rays in classical nova explosions. However, uncertainties properties key resonant states Si26 have hindered our ability accurately model influence this such environments. We report on detailed γ-ray spectroscopy study and present evidence for existence new, likely ℓ=1, resonance Al25 + p system at Er=153.9(15) keV. This state is now expected provide dominant contribution stellar...
A high-precision branching ratio measurement for the superallowed Fermi ${\ensuremath{\beta}}^{+}$ emitter $^{62}\mathrm{Ga}$ was performed with Gamma-Ray Infrastructure Fundamental Investigations of Nuclei (GRIFFIN) spectrometer at Isotope Separator and Accelerator (ISAC) radioactive ion beam facility TRIUMF. The high efficiency GRIFFIN allowed 63 $\ensuremath{\gamma}$-ray transitions, intensities down to $\ensuremath{\approx}1$ part per million (ppm)...
We have performed a detailed γ-ray spectroscopy study of the nucleus, 49Mn, using GRETINA tracking array and FMA recoil separator. With this powerful new setup, low-spin excited states, which are most relevant for astrophysical processes, been identified first time, including four proton-unbound levels, corresponding to key resonances in 48Cr(p,γ)49Mn reaction. Of these two were found dominate reaction temperatures, T = 0.2 − 1.4 GK, uncertainties rate reduced by more than 3 orders...