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Name of new element, tennessine, recognizes state’s contributions, including at ORNL

Posted at 2:53 pm November 30, 2016
By Oak Ridge Today Staff Leave a Comment

tennessine-logo-final

The recently discovered element 117 has been officially named “tennessine” in recognition of Tennessee’s contributions to its discovery, including the efforts of the U.S. Department of Energy’s Oak Ridge National Laboratory and its Tennessee collaborators at Vanderbilt University and the University of Tennessee.

“The presence of tennessine on the Periodic Table is an affirmation of our state’s standing in the international scientific community, including the facilities ORNL provides to that community as well as the knowledge and expertise of the laboratory’s scientists and technicians,” ORNL Director Thom Mason said in a press release.

The International Union of Pure and Applied Chemistry, or IUPAC, gave its final approval to the name “tennessine” following a year-long process that began December 30, 2015, when IUPAC and the International Union of Pure and Applied Physics announced verification of the existence of the superheavy element 117. That was more than five years after scientists first reported its discovery in April 2010.

IUPAC validates the existence of newly discovered elements and approves their official names.

ORNL had several roles in the discovery, the most prominent being production of the radioisotope berkelium-249 for the search. [Read more…]

Filed Under: Front Page News, Oak Ridge National Laboratory, Top Stories, U.S. Department of Energy Tagged With: berkelium-249, calcium-48, DOE, element 117, halogen, High Flux Isotope Reactor, International Union of Pure and Applied Chemistry, International Union of Pure and Applied Physics, island of stability, Isotope Program, IUPAC, Jim Roberto, JINR, Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory, neutron scattering, Oak Ridge National Laboratory, ORNL, periodic table, Radiochemical Engineering Development Center, radioisotopes, Russia, superheavy element, Tennessine, Thom Mason, Ts, U.S. Department of Energy, University of Tennessee, Vanderbilt University, Yuri Oganessian

Recognizing Tennessee’s contribution, Tennessine could be name of new chemical element

Posted at 11:27 am June 8, 2016
By John Huotari Leave a Comment

ORNL Berkelium-249

Berkelium-249, contained in the greenish fluid in the tip of the vial, was crucial to the experiment that discovered element 117. It was made in the research reactor at DOE’s Oak Ridge National Laboratory. (Photo by ORNL)

 

Note: This post was last updated at 11:45 a.m.

Tennessine is among the names proposed for four new elements. If approved, the name would recognize the contributions of Tennessee research centers—Oak Ridge National Laboratory, Vanderbilt University, and the University of Tennessee—in the discovery of one of four new superheavy elements: 113, 115, 117, and 118.

Tennessine (Ts) is proposed for element 117.

The discovery of the four new elements was announced in January, and Oak Ridge National Laboratory played a role in discovering two of them. The elements have been added to the periodic table, filling the seventh row, or period.

Twenty-two milligrams of a very pure synthetic material produced at ORNL were used in the discovery of two of the new chemical elements. [Read more…]

Filed Under: Front Page News, Oak Ridge National Laboratory, Top Stories, U.S. Department of Energy Tagged With: berkelium-249, element 113, element 115, element 117, element 118, High Flux Isotope Reactor, International Union of Pure and Applied Chemistry, island of stability, IUPAC, IUPAC Council, Japan, Jim Roberto, JINR, Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory, LLNL, Moscovium, nihonium, Oak Ridge National Laboratory, Office of Science, Oganesson, ORNL, periodic table, Radiochemical Engineering Development Center, RIKEN Nishina Center for Accelerator-Based Science, Russia, superheavy elements, Tennessine, Ts, U.S. Department of Energy, University of Tennessee, Vanderbilt University, Yuri Oganessian

ORNL associate lab director to discuss discovery of elements 115, 117; super-heavy nuclei; ‘island of stability’

Posted at 9:20 pm March 8, 2016
By Oak Ridge Today Staff Leave a Comment

Jim Roberto

Jim Roberto

Jim Roberto, an associate laboratory director at Oak Ridge National Laboratory, will discuss the discovery of elements 115 and 117, super-heavy nuclei, and the “island of stability” during a Wednesday evening talk next week.

Roberto, ORNL associate laboratory director for science and technology partnerships, will give the featured talk to the ORION astronomy club at 7 p.m. Wednesday, March 16. The talk will be at the Grove Theater at 123 Randolph Road in Oak Ridge.

Roberto’s talk is titled “The Discovery of Elements 115 and 117: SuperHeavy Nuclei and the ‘Island of Stability.'” Roberto will review recent progress in super-heavy element research with particular focus on the significance of element 117 and its decay products as evidence for the existence of the presumed “island of stability” for super-heavy nuclei, a press release said. [Read more…]

Filed Under: Community, Meetings and Events, Oak Ridge National Laboratory, U.S. Department of Energy Tagged With: berkelium-249, calcium-48, element 113, element 117, element 118, Grove Theater, High Flux Isotope Reactor, International Union for Pure and Applied Chemistry, island of stability, IUPAC, Jim Roberto, JINR, Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory, Oak Ridge National Laboratory, ORION, ORION astronomy club, ORNL, Radiochemical Engineering Development Center, RIKEN, super-heavy nuclei, The Discovery of Elements 115 and 117: SuperHeavy Nuclei and the Island of Stability, U.S. Department of Energy

Synthetic material from ORNL used in discovery of new elements 115, 117

Posted at 10:41 pm January 6, 2016
By John Huotari Leave a Comment

ORNL Berkelium-249

Berkelium-249, contained in the greenish fluid in the tip of the vial, was crucial to the experiment that discovered element 117. It was made in the research reactor at the U.S. Department of Energy’s Oak Ridge National Laboratory. (Photo by ORNL)

 

Twenty-two milligrams of a very pure synthetic material produced at Oak Ridge National Laboratory were used in the discovery of two new chemical elements that will help fill out the seventh row of the periodic table.

The synthetic element, berkelium-249, was produced in a project that started with a six-month irradiation of a target material at the High Flux Isotope Reactor at ORNL. The resulting product was separated and processed during a three-month period at the lab’s Radiochemical Engineering Development Center.

The berkelium-249 was then shipped to the Joint Institute for Nuclear Research, or JINR, in Dubna, Russia, where it was intensely bombarded, or irradiated, with calcium-48 ions, creating six atoms of element 117, said Jim Roberto, ORNL associate lab director for science and technology partnerships. Berkelium-249, which does not exist in nature, has a 300-day lifetime, so researchers had a short time to do their experiments.

Element 117 is one of four new elements that have been officially verified by the International Union for Pure and Applied Chemistry. The IUPAC announced the discoveries on December 30. The other three are elements 113, 115, and 118. Element 115 is produced when element 117 decays. [Read more…]

Filed Under: Front Page News, Oak Ridge National Laboratory, ORNL, Slider, Top Stories, U.S. Department of Energy Tagged With: berkelium-249, californium-252, chemical elements, element 113, element 115, element 117, element 118, element 61, Glenn Seaborg, Graphite Reactor, GSI Helmholtz Centre for Heavy Ion Research, High Flux Isotope Reactor, International Union for Pure and Applied Chemistry, IUPAC, Jim Roberto, JINR, Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory, neutrons, new elements, nuclei, nucleus, Oak Ridge National Laboratory, ORNL, periodic table, promethium, protons, Radiochemical Engineering Development Center, RIKEN, thermal neutron flux, Thom Mason, U.S. Department of Energy, University of Tennessee, UT, Vanderbilt University

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