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Toward the Discovery of New Elements: Production of Livermorium (Z=116) with ^{50}Ti.
Phys Rev Lett
October 2024
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Article Synopsis
- - The experiment at Lawrence Berkeley National Laboratory aimed to produce a superheavy element with an atomic number of 114 or greater by bombarding an actinide target with a ^{50}Ti beam.
- - Using the Berkeley Gas-filled Separator, researchers successfully isolated and implanted produced Livermorium (Lv) ions into a high-tech detector system, observing two decay chains linked to ^{290}Lv.
- - The measured production cross-section of the process was 0.44 picobarns at a specific energy, marking the first published evidence of superheavy element production near the "island of stability" with this method, paving the way for future discoveries beyond element Z=118.
Instabilities of heavy magnons in an anisotropic magnet.
Nat Commun
July 2023
Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA.
The search for new elementary particles is one of the most basic pursuits in physics, spanning from subatomic physics to quantum materials. Magnons are the ubiquitous elementary quasiparticle to describe the excitations of fully-ordered magnetic systems. But other possibilities exist, including fractional and multipolar excitations.
View Article and Find Full Text PDFLimits to Gauge Coupling in the Dark Sector Set by the Nonobservation of Instanton-Induced Decay of Super-Heavy Dark Matter in the Pierre Auger Observatory Data.
Phys Rev Lett
February 2023
Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia.
Instantons, which are nonperturbative solutions to Yang-Mills equations, provide a signal for the occurrence of quantum tunneling between distinct classes of vacua. They can give rise to decays of particles otherwise forbidden. Using data collected at the Pierre Auger Observatory, we search for signatures of such instanton-induced processes that would be suggestive of super-heavy particles decaying in the Galactic halo.
View Article and Find Full Text PDFLaser Resonance Chromatography of Superheavy Elements.
Phys Rev Lett
July 2020
Science Department, Chatham University, Pittsburgh, Pennsylvania 15232, USA.
Optical spectroscopy constitutes the historical path to accumulate basic knowledge on the atom and its structure. Former work based on fluorescence and resonance ionization spectroscopy enabled identifying optical spectral lines up to element 102, nobelium. The new challenges faced in this research field are the refractory nature of the heavier elements and the decreasing production yields.
View Article and Find Full Text PDFDiscovery of the heaviest elements.
Chemphyschem
February 2013
GSI-Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany.
The search for new superheavy elements (SHEs) is at present one of the most exciting adventures in nuclear physics. Thanks to enhanced experimental techniques, the synthesis of elements Z=113 to 118 in reactions using (48)Ca projectiles and targets made of isotopes of the elements neptunium to californium has been claimed. Discovery of the elements Z=114 (named flerovium) and Z=116 (named livermorium) has been accepted by the IUPAC.
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