A5040030006- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Particle physics theoretical and experimental studies
- X-ray Spectroscopy and Fluorescence Analysis
- Radioactive Decay and Measurement Techniques
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- Nuclear reactor physics and engineering
- Advanced Chemical Physics Studies
- Radiation Detection and Scintillator Technologies
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Radiopharmaceutical Chemistry and Applications
- Electron and X-Ray Spectroscopy Techniques
- Nuclear and radioactivity studies
- Quantum chaos and dynamical systems
- Medical Imaging Techniques and Applications
- Advanced NMR Techniques and Applications
- Quantum, superfluid, helium dynamics
- Radiation Therapy and Dosimetry
- Superconducting Materials and Applications
- Graphite, nuclear technology, radiation studies
- Scientific Measurement and Uncertainty Evaluation
Texas A&M University
2015-2024
Mitchell Institute
2022
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2001-2021
Brookhaven National Laboratory
2005-2018
Institute for Physics
2004-2010
Queen's University
2006
UCLouvain
2002-2004
Institutul de Fizică Atomică
1994-2003
Institut National de Physique Nucléaire et de Physique des Particules
2001
Centre National de la Recherche Scientifique
2001
The $^{92\text{\ensuremath{-}}96}\mathrm{Zr}$ nuclei were produced as fission fragments following the fusion reactions $^{28}\mathrm{Si}+^{176}\mathrm{Yb}$ and $^{31}\mathrm{P}+^{176}\mathrm{Yb}$ at 145 152 MeV bombarding energy, respectively. Prompt $\ensuremath{\gamma}$ rays emitted in two detected with EUROGAM II EUROBALL IV arrays. Sequences of $\ensuremath{\gamma}$-ray transitions observed coincidence newly assigned to $^{93\text{\ensuremath{-}}96}\mathrm{Zr}$. previously known level...
We present the first study of \ensuremath{\beta} decay $^{23}\mathrm{Al}$ undertaken with pure samples. The was motivated by nuclear astrophysics questions. Pure samples were obtained from momentum achromat recoil separator (MARS) Texas A University, collected on a fast tape-transport system, and moved to shielded location where \ensuremath{\beta}-\ensuremath{\gamma} coincidence measurements made. deduced branching ratios log $\mathit{ft}$ values for transitions states in $^{23}\mathrm{Mg}$,...
We report the first branching-ratio measurement of superallowed ${0}^{+}\ensuremath{\rightarrow}{0}^{+}\ensuremath{\beta}$ transition from $^{38}\mathrm{Ca}$. The result, 0.7728(16), leads to an $ft$ value 3062.3(68) s with a relative precision $\ifmmode\pm\else\textpm\fi{}0.2%$. This makes possible high-precision comparison values for mirror transitions, $^{38}\mathrm{Ca}{\ensuremath{\rightarrow}}^{38m}\mathrm{K}$ and $^{38m}\mathrm{K}\ensuremath{\rightarrow}^{38}\mathrm{Ar}$, which...
A precision measurement of the gamma yields following beta decay 32Cl has determined its isobaric analogue branch to be (22.47^{+0.21}_{-0.19})%. Since it is an almost pure Fermi decay, we can also determine amount isospin-symmetry breaking in this superallowed transition. We find a very large value, delta_C=5.3(9)%, agreement with shell-model calculation. This result sets benchmark for isospin-symmetry-breaking calculations and lends support similarly-calculated, yet smaller, corrections...
The $10.5\text{\penalty1000-\hskip0pt}\text{day}$ isomer in $^{193}\mathrm{Ir}$ decays by a single $80.2\text{\penalty1000-\hskip0pt}\mathrm{keV}$ $M4$ transition directly to the ground state of that nucleus. We have measured total intensity $K$ x rays relative $\ensuremath{\gamma}$ for this be 98.7(6). With $K$-shell fluorescent yield iridium taken 0.958(4), result yields ${\ensuremath{\alpha}}_{K}=103.0(8)$ internal conversion coefficient (ICC). calculated ${\ensuremath{\alpha}}_{K}$ is...
To contribute meaningfully to any test of the unitarity Cabibbo-Kobayashi-Maskawa (CKM) matrix, measured $\mathit{ft}$ value a superallowed ${0}^{+}\ensuremath{\rightarrow}{0}^{+}$ ${\ensuremath{\beta}}^{+}$ transition must be obtained precision 0.1% or better. We have determined half-life emitter $^{34}\mathrm{Ar}$ 843.8(4)ms; quoted precision, 0.05%, is factor five improvement on best previous measurement and meets this demanding requirement. Our employed high-efficiency gas counter, which...