A. K. Mistry
A5043590817- Nuclear physics research studies
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Astronomical and nuclear sciences
- Quantum Chromodynamics and Particle Interactions
- Advanced Chemical Physics Studies
- Radiation Detection and Scintillator Technologies
- Nuclear reactor physics and engineering
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Mass Spectrometry Techniques and Applications
- Rare-earth and actinide compounds
- Radioactive element chemistry and processing
- Advanced NMR Techniques and Applications
- Neutrino Physics Research
- Particle Detector Development and Performance
- X-ray Spectroscopy and Fluorescence Analysis
- Software System Performance and Reliability
- Educational Technology and Assessment
- Nuclear Materials and Properties
- Radioactive Decay and Measurement Techniques
- Electron and X-Ray Spectroscopy Techniques
- Context-Aware Activity Recognition Systems
- Radiopharmaceutical Chemistry and Applications
- Particle accelerators and beam dynamics
GSI Helmholtz Centre for Heavy Ion Research
2016-2025
Technical University of Darmstadt
2021-2025
University of Liverpool
2014-2025
Saha Institute of Nuclear Physics
2024
Institut de Recherche sur les Lois Fondamentales de l'Univers
2023
Université Paris-Saclay
2023
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2023
CEA Paris-Saclay
2023
University of Surrey
2023
Helmholtz Institute Mainz
2016-2022
The superheavy element with atomic number Z=117 was produced as an evaporation residue in the (48)Ca+(249)Bk fusion reaction at gas-filled recoil separator TASCA GSI Darmstadt, Germany. radioactive decay of residues and their α-decay products studied using a detection setup that allowed measuring decays single nuclei half-lives between sub-μs few days. Two chains comprising seven α spontaneous fission each were identified are assigned to isotope (294)117 its products. A hitherto unknown...
A high-resolution α, x-ray, and γ-ray coincidence spectroscopy experiment was conducted at the GSI Helmholtzzentrum für Schwerionenforschung. Thirty correlated α-decay chains were detected following fusion-evaporation reaction 48Ca + 243Am. The observations are consistent with previous assignments of similar decay to originate from element Z=115. For first time, precise allows derivation excitation schemes isotopes along starting elements Z>112. Comprehensive Monte Carlo simulations...
Two short-lived isotopes ^{221}U and ^{222}U were produced as evaporation residues in the fusion reaction ^{50}Ti+^{176}Yb at gas-filled recoil separator TASCA. An α decay with an energy of E_{α}=9.31(5) MeV half-life T_{1/2}=4.7(7) μs was attributed to ^{222}U. The new isotope identified α-decay chains starting E_{α}=9.71(5) T_{1/2}=0.66(14) leading known daughters. Synthesis detection these unstable heavy nuclei their descendants achieved thanks a fast data readout system. evolution N=126...
Until recently, ground-state nuclear moments of the heaviest nuclei could only be inferred from spectroscopy, where model assumptions are required. Laser spectroscopy in combination with modern atomic structure calculations is now able to probe these directly, a comprehensive and nuclear-model-independent way. Here we report on unique access differential mean-square charge radii ^{252,253,254}No, therefore changes size shape. State-of-the-art density functional describe well region heavy...
A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in $^{50}\mathrm{Ti}+^{249}\mathrm{Bk}$ $^{50}\mathrm{Ti}+^{249}\mathrm{Cf}$ fusion-evaporation reactions, respectively, at gas-filled recoil separator TASCA GSI Darmstadt, Germany. Over four months irradiation, $^{249}\mathrm{Bk}$ target partially decayed into $^{249}\mathrm{Cf}$, which allowed a simultaneous both elements. Neither detected cross-section sensitivity levels 65 200 fb midtarget...
One of the most important atomic properties governing an element's chemical behavior is energy required to remove its least-bound electron, referred as first ionization potential. For heaviest elements, this fundamental quantity strongly influenced by relativistic effects which lead unique properties. Laser spectroscopy on atom-at-a-time scale was developed and applied probe optical spectrum neutral nobelium near threshold. The potential determined here with a very high precision from...
The discovery that copernicium can decay into a new isotope of darmstadtium and the observation previously unseen excited state provide clues to location ``island stability.''
The $\beta$-delayed neutron emission in the $^{85, 86}$As $\beta$-decays has been measured at Ion Guide Isotope Separator On Line facility of Accelerator Laboratory University Jyv\"askyl\"a. complete have studied with a complex setup that consists plastic scintillator for $\beta$-particles, MONSTER -- MOdular Neutron time-of-flight SpectromeTER neutrons, and high-purity germanium four LaBr$_3$ crystals $\gamma$-rays. energy distributions determined by unfolding spectra an innovative...
Abstract The $$\upalpha $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>α</mml:mi> </mml:math> -decay fine structure of $$^{179}$$ <mml:mmultiscripts> <mml:mrow/> <mml:mn>179</mml:mn> </mml:mmultiscripts> Hg and $$^{177}$$ <mml:mn>177</mml:mn> Au was studied by means decay spectroscopy. Two experiments were performed at the Accelerator Laboratory University Jyväskylä (JYFL), Finland, utilizing recoil separator RITU a digital data acquisition system. heavy-ion induced...
Artificial intelligence is increasingly shaping the way we think, design, build and operate present future particle accelerators for science discovery society.
The <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mi>β</a:mi></a:math>-delayed neutron emission in the <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mrow><b:mmultiscripts><b:mi>As</b:mi><b:mprescripts/><b:none/><b:mrow><b:mn>85</b:mn><b:mo>,</b:mo><b:mn>86</b:mn></b:mrow></b:mmultiscripts><b:mspace width="4pt"/><b:mi>β</b:mi></b:mrow></b:math> decays has been measured at Ion Guide Isotope Separator On Line facility of Accelerator Laboratory University Jyväskylä. complete...
The heaviest currently known nuclei, which have up to 118 protons, been produced in $^{48}\mathrm{Ca}$ induced reactions with actinide targets. Among them, the element tennessine (Ts), has 117 synthesized by fusing radioactive target $^{249}\mathrm{Bk}$, a half-life of 327 d. experiment was performed at gas-filled recoil separator TASCA. Two long and two short $\ensuremath{\alpha}$ decay chains were observed. attributed $^{294}\mathrm{Ts}$. possible origin short-decay is discussed comparison...
Flerovium (Fl, element 114) is the heaviest chemically studied so far. To date, its interaction with gold was investigated in two gas-solid chromatography experiments, which reported different types of interaction, however, each based on level a few registered atoms only. Whereas noble-gas-like properties were suggested from first experiment, second one pointed at volatile-metal-like character. Here, we present further experimental data adsorption studies Fl silicon oxide and surfaces,...
Nihonium (Nh, element 113) and flerovium (Fl, 114) are the first superheavy elements in which 7p shell is occupied. High volatility inertness were predicted for Fl due to strong relativistic stabilization of closed 1/2 sub-shell, originates from a large spin-orbit splitting between 3/2 orbitals. One unpaired electron outermost sub-shell Nh expected give rise higher chemical reactivity. Theoretical predictions reactivity discussed, along with results experimental attempts study chemistry gas...
Direct lifetime measurements via $\ensuremath{\gamma}\text{\ensuremath{-}}\ensuremath{\gamma}$ coincidences using a fast timing detector array consisting of ${\mathrm{LaBr}}_{3}(\mathrm{Ce})$ scintillators has been applied to determine the low-lying states in semimagic $(N=50)$ nucleus $^{94}\mathrm{Ru}$. The experiment was carried out as first series ``FAIR-0'' experiments with DESPEC experimental setup at Facility for Antiproton and Ion Research (FAIR). Excited $^{94}\mathrm{Ru}$ were...
The isotopic distribution of nuclei produced in the 50Ti + 249Cf reaction has been studied at gas-filled recoil separator TASCA GSI Darmstadt, which separates ions according to differences magnetic rigidity. bombardment was performed an energy around Bass barrier and with fields set for collecting fusion-evaporation products. Fifty-three isotopes located "north-east" 208Pb were identified as recoiling products formed non-fusion channels reaction. These recoils implanted energies two distinct...