L. Al Ayoubi
A5004564589- Nuclear physics research studies
- Astronomical and nuclear sciences
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Quantum Chromodynamics and Particle Interactions
- Advanced Chemical Physics Studies
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Radiopharmaceutical Chemistry and Applications
- Nuclear reactor physics and engineering
- Particle physics theoretical and experimental studies
- Superconducting Materials and Applications
- Mass Spectrometry Techniques and Applications
- Inorganic Fluorides and Related Compounds
- Neutrino Physics Research
- Advanced NMR Techniques and Applications
- DNA and Nucleic Acid Chemistry
- History and advancements in chemistry
- X-ray Spectroscopy and Fluorescence Analysis
University of Jyväskylä
2021-2025
Université Paris-Saclay
2023-2025
Institut National de Physique Nucléaire et de Physique des Particules
2023-2025
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2023-2024
Centre National de la Recherche Scientifique
2023-2024
Precision mass measurements of neutron-rich rhodium isotopes have been performed at the JYFLTRAP Penning trap spectrometer Ion Guide Isotope Separator On-Line (IGISOL) facility. We report results on ground- and isomeric-state masses in $^{110,112,114,116,118}\mathrm{Rh}$ very first measurement $^{120}\mathrm{Rh}$. The isomeric states were separated measured for time using phase-imaging ion-cyclotron-resonance (PI-ICR) technique. For $^{112}\mathrm{Rh}$, we also new half-lives both ground...
Abstract Understanding the evolution of nuclear charge radius is one long-standing challenges for theory. Recently, density functional theory calculations utilizing Fayans functionals have successfully reproduced radii a variety exotic isotopes. However, difficulties in isotope production hindered testing these models immediate region chart below heaviest self-conjugate doubly-magic nucleus 100 Sn, where near-equal number protons ( Z ) and neutrons N lead to enhanced neutron-proton pairing....
The multinucleon transfer (MNT) reaction approach was successfully employed for the first time to measure isomeric ratios (IRs) of 211Po isomer (25/2+) and its ground state (9/2+) at IGISOL facility using a 945 MeV 136Xe beam impinged on 209Bi natPb targets. dominant production isomers compared corresponding states consistently revealed in α-decay spectra. Deduced IR populated through 136Xe+natPb found have an enhancement ≈1.8-times than that observed 136Xe+209Bi. State-of-the-art...
We report on the masses and hyperfine structure of ground isomeric states in 114,116,118,120Ag isotopes, measured with phase-imaging ion-cyclotron-resonance technique (PI-ICR) JYFLTRAP mass spectrometer collinear laser spectroscopy beamline at Ion Guide Isotope Separator On-Line facility, Jyväskylä, Finland. excitation energies, electromagnetic moments, charge radii, firmly established nuclear spins long-lived states. A new isomer was discovered 118Ag half-lives were reevaluated....
The Pygmy Dipole Resonance is an exotic excitation mode whose microscopic nature not yet fully understood. By using different probes in inelastic scattering reactions, it possible to obtain complementary information on the character of excited structures. For this reason, very first study a neutron probe has been performed. experiment, focused \(^{140}\)Ce nucleus, took place 2022 at NFS facility GANIL-SPIRAL2. PARIS and MONSTER arrays were used for \(\gamma \)-ray scattered detection,...
The $\beta$-delayed spectroscopy of $^{80}$Ge has been studied using sources ground and low-lying isomeric states $^{80}$Ga. A hybrid $\gamma$-ray spectrometer was used, composed HPGe detectors for low-energy $\gamma$ rays detection phoswich from PARIS array high-energy a plastic detector $\beta$ tagging. new decay level schemes are presented with 19 30 populated by $^{80g}$Ga $^{80m}$Ga, respectively, being reported the first time. We compare data shell-model calculations, investigate...
Collinear laser spectroscopy was performed on the isomer of aluminium isotope ^{26m}Al. The measured shift to ^{27}Al in 3s^{2}3p ^{2}P_{3/2}^{○}→3s^{2}4s ^{2}S_{1/2} atomic transition enabled first experimental determination nuclear charge radius ^{26m}Al, resulting R_{c}=3.130(15) fm. This differs by 4.5 standard deviations from extrapolated value used calculate isospin-symmetry breaking corrections superallowed β decay Its corrected Ft value, important for estimation V_{ud}...
We report on precision mass measurements of $^{113,115,117}\mathrm{Ru}$ performed with the JYFLTRAP double Penning trap spectrometer at Accelerator Laboratory University Jyv\"askyl\"a. The phase-imaging ion-cyclotron-resonance technique was used to resolve ground and isomeric states in $^{113,115}\mathrm{Ru}$ enabled for first time a measurement isomer excitation energies, ${E}_{x}(^{113}\mathrm{Ru}^{\mathrm{m}})=100.5(8)$ keV ${E}_{x}(^{115}\mathrm{Ru}^{\mathrm{m}})=129(5)$ keV. state...
Neutron-rich In120–124 isotopes have been studied utilizing the double Penning trap mass spectrometer JYFLTRAP at IGISOL facility. Using phase-imaging ion-cyclotron-resonance technique, isomeric states were resolved from ground and their excitation energies measured with high precision in In121,123,124. In In120,122, 1+ separated masses while energy difference between unresolved 5+ 8− states, whose presence was confirmed by post-trap decay spectroscopy, determined to be ≤15 keV. addition,...
We report on the first direct mass measurements of $^{118,119}\mathrm{Cd}$ and $^{117--119}\mathrm{In}$ isotopes performed at Ion Guide Isotope Separator On-Line facility using JYFLTRAP double Penning trap spectrometer. The masses $^{117}\mathrm{In}$ $^{118}\mathrm{Cd}$ are in agreement with literature, while $^{118,119}\mathrm{In}$ $^{119}\mathrm{Cd}$ differ from literature by 49, 13, 85 keV (6.1, 1.9, 2.1 standard deviations), respectively. excitation energy $^{118}\mathrm{In}$ isomeric...
The masses of $^{84}$Br, $^{105}$Mo, $^{115,119,121}$Pd, $^{122}$Ag, $^{127,129}$In, $^{132}$Sb and their respective isomeric states have been measured with the JYFLTRAP Penning trap mass spectrometer using phase-imaging ion-cyclotron-resonance technique. excitation energies in $^{119}$Pd were experimentally determined for first time, while $^{115}$Pd precision values was substantially improved. In $^{105}$Mo $^{121}$Pd there no signs a long-lived state. ground-state measurements $^{122}$Ag...
The multinucleon transfer (MNT) reaction approach was successfully employed for the first time to measure isomeric ratios (IRs) of $^{211}$Po (25/2$^+$) isomer and its (9/2$^+$) ground state at IGISOL facility using a 945 MeV $^{136}$Xe beam impinged on $^{209}$Bi $^{\rm nat}$Pb targets. dominant production isomers compared corresponding states consistently revealed in $\alpha$-decay spectra. Deduced IR populated through $^{136}$Xe+$^{\rm found enhance $\approx$1.8-times than observed...
The Gamow-Teller strength distribution covering the entire $\beta$-decay window, up to 10.312(4) MeV, of $^{80g+m}$Ga was measured for first time in photo-fission UC$_x$ induced by 50 MeV electron beam. new data show significant enhancement high-energy region with a jump-structure. Simultaneously, $\gamma$ de-exciting behavior $\beta$-populated states presents competition between de-excitation 2$_1^+$ [$\beta_2$ = 0.155(9)] and 2$_2^+$ 0.053$_{0.009}^{0.008}$)] $^{80}$Ge. Based on these...
The masses of the ground and isomeric states in $^{124,125}$Ag have been measured using phase-imaging ion-cyclotron-resonance technique at JYFLTRAP double Penning trap mass spectrometer. $^{124}$Ag $^{125}$Ag were found to be 30(250) keV 250(430) less bound but 36 110 times more precise than Atomic Mass Evaluation 2020, respectively. excitation energy $^{124}$Ag$^{m}$, ${E_x = 188.2(25)}$ keV, was determined for first time. new values utilised study evolution nuclear structure via...
We report on the masses and hyperfine structure of ground isomeric states in $^{114,116,118,120}$Ag isotopes, measured with phase-imaging ion-cyclotron-resonance technique (PI-ICR) JYFLTRAP mass spectrometer collinear laser spectroscopy beamline at Ion Guide Isotope Separator On-Line (IGISOL) facility, Jyv\"askyl\"a, Finland. excitation energies, electromagnetic moments, charge radii, firmly established nuclear spins long-lived states. A new isomer was discovered $^{118}$Ag half-lives were...
Neutron-rich $^{120-124}$In isotopes have been studied utilizing the double Penning trap mass spectrometer JYFLTRAP at IGISOL facility. Using phase-imaging ion-cyclotron-resonance technique, isomeric states were resolved from ground and their excitation energies measured with high precision in $^{121,123,124}$In. In $^{120,122}$In, $1^+$ separated masses while energy difference between unresolved $5^+$ $8^-$ states, whose presence was confirmed by post-trap decay spectroscopy determined to...
Collinear laser spectroscopy was performed on the isomer of aluminium isotope $^{26m}$Al. The measured shift to $^{27}$Al in $3s^{2}3p\;^{2}\!P^\circ_{3/2} \rightarrow 3s^{2}4s\;^{2}\!S_{1/2}$ atomic transition enabled first experimental determination nuclear charge radius $^{26m}$Al, resulting $R_c$=\qty{3.130\pm.015}{\femto\meter}. This differs by 4.5 standard deviations from extrapolated value used calculate isospin-symmetry breaking corrections superallowed $\beta$ decay Its corrected...
Abstract The $$\beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>β</mml:mi> </mml:math> -delayed $$\gamma <mml:mi>γ</mml:mi> spectroscopy of $$^{81}$$ <mml:msup> <mml:mrow /> <mml:mn>81</mml:mn> </mml:msup> As has been performed using a purified beam Ge $$(9/2^+)$$ <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>9</mml:mn> <mml:mo>/</mml:mo> <mml:mn>2</mml:mn> <mml:mo>+</mml:mo> <mml:mo>)</mml:mo> </mml:mrow> ground state at the Ion Guide Isotope Separator On-Line facility...
We report on precision mass measurements of $^{113,115,117}$Ru performed with the JYFLTRAP double Penning trap spectrometer at Accelerator Laboratory University Jyv\"askyl\"a. The phase-imaging ion-cyclotron-resonance technique was used to resolve ground and isomeric states in $^{113,115}$Ru enabled for first time a measurement isomer excitation energies, $E_x(^{113}$Ru$^{m})=100.5(8)$ keV $E_x(^{115}$Ru$^{m})=129(5)$ keV. state $^{117}$Ru measured using time-of-flight technique. new...
Abstract We predict the existence of medium spin PDR and find experimental evidence in 80 Ge using β -decay Ga. This nucleus was produced photo-fission 238 U. A hybrid γ -ray spectrometer developed a plastic detector for -tagging, HPGe detectors low-energy rays detection phoswich PARIS high-energy rays. The low-high energy coincidence spectrum shows two peaks at 7181(53) 7337(53) keV 80m Ga isomeric state only, with 2 1 + → 0 transition Ge. Combined decay information, electric dipole...