Doe Science news source
The DOE Science News Source is a Newswise initiative to promote research news from the Office of Science of the DOE to the public and news media.
  • 2017-05-03 12:05:07
  • Article ID: 674066

FIONA to Take on the Periodic Table's Heavyweights

New device at Berkeley Lab's 88-Inch Cyclotron is designed to measure the mass number of superheavy, human-made elements

  • Credit: Marilyn Chung/Berkeley Lab

    Berkeley Lab Scientists Jackie Gates, left, and Kenneth Gregorich work on FIONA, a new device at the Lab’s 88-Inch Cyclotron. FIONA is designed to precisely measure the mass number of the periodic table’s superheavy elements, and could also be useful for other types of explorations of superheavy elements.

  • Credit: Marilyn Chung/Berkeley Lab

    Jackie Gates, a Berkeley Lab staff scientist, points to a branching region of the periodic table that is populated by isotopes of superheavy elements.

  • Credit: Marilyn Chung/Berkeley Lab

    A view of FIONA in Cave 2 at Berkeley Lab’s 88-Inch Cyclotron.

  • Credit: Marilyn Chung/Berkeley Lab

    Jeffrey Kwarsick, a graduate student, works on the installation of FIONA at Berkeley Lab’s 88-Inch Cyclotron.

A new tool at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) will be taking on some of the periodic table’s latest heavyweight champions to see how their masses measure up to predictions.

Dubbed FIONA, the device is designed to measure the mass numbers of individual atoms of superheavy elements, which have higher masses than uranium.

“Once we have determined those mass numbers, we will use FIONA to learn about the shape and structure of heavy nuclei, guide the search for new elements, and to give us better measurements for nuclear fission and related processes in nuclear physics and nuclear chemistry research,” said Kenneth Gregorich, a senior scientist in Berkeley Lab’s Nuclear Science Division who has been involved in building and testing FIONA.

FIONA’s full name is “For the Identification Of Nuclide A.” The “A” is a scientific symbol representing the mass number -- the sum of protons, which are positively charged, and neutrons, which do not have an electric charge -- in the nucleus of an atom. The proton count, also known as the atomic number, is unique for each element and is the basis for the arrangement of elements in the periodic table. 

FIONA builds on a long history of expertise in heavy element discoveries and nuclear physics research at Berkeley Lab. The Lab’s scientists have been involved in the discovery of 16 elements and also various forms of elements, known as isotopes, which have different numbers of neutrons.

Nuclear physicists have used the known masses of radioactive decay “daughter atoms” as a framework for determining the masses for these heavier “parent” elements.

Previous experiments have also helped to home in on the masses of some of the superheavy elements. But determining the mass number of some of the heaviest elements has remained out of reach because it is challenging to produce isolated atoms and to measure them before they rapidly decay.

FIONA’s measurements are expected to provide a better fundamental understanding of the makeup of these manufactured superheavy atomic nuclei. 

“We will be exploring the limits of nuclear stability, answering basic questions such as how many protons you can put in a nucleus,” Gregorich said.

A holy grail in this field is to reach the so-called “island of stability,” an as-yet unexplored realm in the chart of nuclei where human-made isotopes are theorized to be long-lived. 

“We will perhaps be probing the edge of this ‘island’ -- informing theories that predict such things so they can be refined,” Gregorich said.

FIONA was installed in November 2016 at Berkeley Lab’s 88-Inch Cyclotron, which produces intense particle beams for nuclear physics experiments and to test the radiation-hardness of computer chips for use in satellites, and has since undergone a range of tests to prepare it for a first round of experiments this summer. FIONA is an enhancement to a long-running machine called the Berkeley Gas-filled Separator (BGS) that separates atoms of superheavy elements from other types of charged particles.

“The separator’s job is to separate the heavy elements of interest from the beam and other unwanted reaction products,” Gregorich said, and FIONA is designed to move the desired atoms away from this “noisy” environment and to quickly measure them within about 10 thousandths of a second.

This is important because the human-made superheavy elements discovered so far have very short half-lives, in some cases decaying down to lighter elements on scales measured in thousandths of a second.

FIONA components include a new shielding wall that is designed to reduce background noise from other charged particles, a specialized trapping mechanism for atoms, and a sensitive silicon-based detector array that can measure the energy, position, and timing of the decay of radioactive atoms.

Several components of FIONA were constructed under contract with Argonne National Laboratory, and the mass analyzer was designed and built at Berkeley Lab.

“The design for FIONA is practical, flexible, and unique,” Gregorich said. “We were looking at different ways to perform mass separation, and everything else was either more expensive or more difficult.”

The initial beams that will be produced at the 88-Inch Cyclotron for the early FIONA experiments will use an isotope of calcium that is accelerated to strike a target containing a heavy element -- typically human-made americium, which is heavier than plutonium. This bombardment fuses some of the atomic nuclei to produce even heavier atoms. 

Jackie Gates, a staff scientist in the Nuclear Science Division and a leader of the FIONA team, said, “Some other devices have a much higher mass resolution but a lower efficiency -- FIONA will have the highest efficiency.” This higher efficiency means that FIONA can isolate and measure more atoms of a specific superheavy element in a given time than comparable devices.

Even so, the creation of the heaviest atoms yet discovered is challenging: Of all the particles pouring through the separator, perhaps one in a quintillion (one followed by 18 zeros) reaching the experiment will form a superheavy element of interest.

That translates into the production of possibly one atom of interest per day, and several detections will be needed to determine the mass number, Gates said.

After separation in the Berkeley Gas-filled Separator, atoms of interest are trapped, bunched, and cooled in a device known as a radiofrequency quadrupole trap.

They are then sent through the FIONA mass separator, which contains crossed electric and magnetic fields. In the separator, the ions take on a looping trajectory, sending them to the detector with positions determined by their mass-to-charge ratio. The position in the detector at which the superheavy element radioactive decay is detected gives the mass number.

FIONA’s commissioning should wrap up this spring, Gates said, and one of the headline experiments for the new device will be to study decay processes associated with element 115, recently named moscovium (its periodic table symbol is “Mc”).

“The Berkeley Gas-filled Separator gave us 20 years of science,” Gates said, “and now we are looking at extending this another 10 to 20 years with FIONA.”

This work is supported by the Department of Energy’s Office of Nuclear Physics.

# # #

Lawrence Berkeley National Laboratory addresses the world’s most urgent scientific challenges by advancing sustainable energy, protecting human health, creating new materials, and revealing the origin and fate of the universe. Founded in 1931, Berkeley Lab’s scientific expertise has been recognized with 13 Nobel Prizes. The University of California manages Berkeley Lab for the U.S. Department of Energy’s Office of Science. For more, visit www.lbl.gov.

DOE’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit science.energy.gov.

X
X
X
  • Filters

  • × Clear Filters

Kentucky Researchers First to Produce High Grade Rare Earths From Coal

University of Kentucky researchers have produced nearly pure rare earth concentrates from Kentucky coal using an environmentally-conscious and cost-effective process, a groundbreaking accomplishment in the energy industry.

Watching Atoms Move in Hybrid Perovskite Crystals Reveals Clues to Improving Solar Cells

The discovery of nanoscale changes deep inside hybrid perovskites could shed light on developing low-cost, high-efficiency solar cells. Using X-ray beams and lasers, a team of researchers led by the University of California San Diego discovered how the movement of ions in hybrid perovskites causes certain regions within the material to become better solar cells than other parts.

Quantum Dots Amplify Light with Electrical Pumping

In a breakthrough development, Los Alamos scientists have shown that they can successfully amplify light using electrically excited films of the chemically synthesized semiconductor nanocrystals known as quantum dots.

The Challenge of Estimating Alaska's Soil Carbon Stocks

A geospatial analysis determined the optimal distribution of sites needed to reliably estimate Alaska's vast soil carbon.

Strain-Free Epitaxy of Germanium Film on Mica

Germanium was the material of choice in the early history of electronic devices, and due to its high charge carrier mobility, it's making a comeback. It's generally grown on expensive single-crystal substrates, adding another challenge to making it sustainably viable for most applications. To address this aspect, researchers demonstrate an epitaxy method that incorporates van der Waals' forces to grow germanium on mica. They discuss their work in the Journal of Applied Physics.

Unplugging the Cellulose Biofuel Bottleneck

Molecular-level understanding of cellulose structure reveals why it resists degradation and could lead to cost-effective biofuels.

Detailed View of Immune Proteins Could Lead to New Pathogen-Defense Strategies

Biologists at Berkeley Lab and UC Berkeley used cryo-EM to resolve the structure of a ring of proteins used by the immune system to summon support when under attack, providing new insight into potential strategies for protection from pathogens. The researchers captured the high-resolution image of a protein ring, called an inflammasome, as it was bound to flagellin, a protein from the whiplike tail used by bacteria to propel themselves forward.

Unlocking the Secrets of Ebola

Scientists have identified a set of biomarkers that indicate which patients infected with the Ebola virus are most at risk of dying from the disease. The results come from one of the most in-depth studies ever of blood samples from patients with Ebola.

Scientists Make First Observations of How a Meteor-Like Shock Turns Silica Into Glass

Studies at the Department of Energy's SLAC National Accelerator Laboratory have made the first real-time observations of how silica - an abundant material in the Earth's crust - easily transforms into a dense glass when hit with a massive shock wave like one generated from a meteor impact.

How Fungal Enzymes Break Down Plant Cell Walls

Lignocellulose-degrading enzyme complexes could improve biofuel production.


  • Filters

  • × Clear Filters

Jefferson Lab Scientist Selected to Receive Francis Slack Award

Dr. Hari Areti, has been selected to receive the Francis G. Slack Award, established by the Southeastern Section of the American Physical Society, to honor excellence in service to Physics in the Southeastern U.S.

ORNL Wins Nine R&D 100 Awards

Researchers at the Department of Energy's Oak Ridge National Laboratory have received nine R&D 100 Awards in recognition of their significant advancements in science and technology.

Argonne Scientists Capture Several R&D 100 Awards

Innovative technologies developed by researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory recently earned several R&D 100 Awards.

Eight Los Alamos innovations win R&D 100 Awards

Eight Los Alamos National Laboratory technologies won R&D 100 Awards last week at R&D Magazine's annual ceremony in Orlando, Florida.

Physicist David Gates Named Editor-in-Chief of Plasma, a New Online Journal

Article announces David Gates' appointment as editor-in-chief of Plasma magazine

Argonne to Install Comanche System to Explore ARM Technology for High-Performance Computing

Argonne National Laboratory is collaborating with Hewlett Packard Enterprise (HPE) to provide system software expertise and a development ecosystem for a future high-performance computing (HPC) system based on 64-bit ARM processors.

CANDLE Shines in 2017 HPCwire Readers' and Editors' Choice Awards

Argonne National Laboratory has been recognized in the annual <em>HPCwire</em> Readers' and Editors' Choice Awards, presented at the 2017 International Conference for High Performance Computing, Networking, Storage and Analysis (SC17), in Denver, Colorado.

SLAC's Helen Quinn Honored with 2018 Benjamin Franklin Medal in Physics

Helen Quinn, a professor emerita at the Department of Energy's SLAC National Accelerator Laboratory and Stanford University, will receive the 2018 Benjamin Franklin Medal in Physics - one of eight prestigious Franklin Institute Awards that will be handed out in Philadelphia next April.

PPPL Honors Grierson and Greenough for Distinguished Research and Engineering Achievements

Article describes PPPL's presentation of 2017 Kaul Prize and Distinguished Engineering Fellow awards.

INCITE Grants of 5.95 Billion Hours Awarded to 55 Computational Research Projects

The U.S. Department of Energy's Office of Science announced 55 projects with high potential for accelerating discovery through its Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program. The projects will share 5.95 billion core-hours on three of America's most powerful supercomputers dedicated to capability-limited open science and support a broad range of large-scale research campaigns from infectious disease treatment to next-generation materials development.


  • Filters

  • × Clear Filters

The Challenge of Estimating Alaska's Soil Carbon Stocks

A geospatial analysis determined the optimal distribution of sites needed to reliably estimate Alaska's vast soil carbon.

Unplugging the Cellulose Biofuel Bottleneck

Molecular-level understanding of cellulose structure reveals why it resists degradation and could lead to cost-effective biofuels.

How Fungal Enzymes Break Down Plant Cell Walls

Lignocellulose-degrading enzyme complexes could improve biofuel production.

Stretching to Perfection of 2-D Semiconductors

Scientists use heat and mismatched surfaces to stretch films that can potentially improve the efficient operation of devices.

Simple is Beautiful in Quantum Computing

Defect spins in diamond were controlled with a simpler, geometric method, leading to faster computing.

The Effect of Hurricanes on Puerto Rico's Dry Forests

More frequent storms turn forests from carbon source to sink.

A Chemical Thermometer for Tropical Forests

Monoterpene measures how certain forests respond to heat stress.

Where a Leaf Lands and Lies Influences Carbon Levels in Soil for Years to Come

Whether carbon comes from leaves or needles affects how fast it decomposes, but where it ends up determines how long it's available.

Twisting Molecule Wrings More Power from Solar Cells

Readily rotating molecules let electrons last, resulting in higher solar cell efficiency.

Rules Are Only Suggestions in Heavy Elements

The arrangement of electrons in an exotic human-made element shows that certain properties of heavy elements cannot be predicted using lighter ones.


Spotlight

Tuesday October 03, 2017, 01:05 PM

Stairway to Science

Argonne National Laboratory

Thursday September 28, 2017, 12:05 PM

After-School Energy Rush

Argonne National Laboratory

Thursday September 28, 2017, 10:05 AM

Bringing Diversity Into Computational Science Through Student Outreach

Brookhaven National Laboratory

Thursday September 21, 2017, 03:05 PM

From Science to Finance: SLAC Summer Interns Forge New Paths in STEM

SLAC National Accelerator Laboratory

Thursday September 07, 2017, 02:05 PM

Students Discuss 'Cosmic Opportunities' at 45th Annual SLAC Summer Institute

SLAC National Accelerator Laboratory

Thursday August 31, 2017, 05:05 PM

Binghamton University Opens $70 Million Smart Energy Building

Binghamton University, State University of New York

Wednesday August 23, 2017, 05:05 PM

Widening Horizons for High Schoolers with Code

Argonne National Laboratory

Saturday May 20, 2017, 12:05 PM

Rensselaer Polytechnic Institute Graduates Urged to Embrace Change at 211th Commencement

Rensselaer Polytechnic Institute (RPI)

Monday May 15, 2017, 01:05 PM

ORNL, University of Tennessee Launch New Doctoral Program in Data Science

Oak Ridge National Laboratory

Friday April 07, 2017, 11:05 AM

Champions in Science: Profile of Jonathan Kirzner

Department of Energy, Office of Science

Wednesday April 05, 2017, 12:05 PM

High-Schooler Solves College-Level Security Puzzle From Argonne, Sparks Interest in Career

Argonne National Laboratory

Tuesday March 28, 2017, 12:05 PM

Champions in Science: Profile of Jenica Jacobi

Department of Energy, Office of Science

Friday March 24, 2017, 10:40 AM

Great Neck South High School Wins Regional Science Bowl at Brookhaven Lab

Brookhaven National Laboratory

Wednesday February 15, 2017, 04:05 PM

Middle Schoolers Test Their Knowledge at Science Bowl Competition

Argonne National Laboratory

Friday January 27, 2017, 04:00 PM

Haslam Visits ORNL to Highlight State's Role in Discovering Tennessine

Oak Ridge National Laboratory

Tuesday November 08, 2016, 12:05 PM

Internship Program Helps Foster Development of Future Nuclear Scientists

Oak Ridge National Laboratory

Friday May 13, 2016, 04:05 PM

More Than 12,000 Explore Jefferson Lab During April 30 Open House

Thomas Jefferson National Accelerator Facility

Monday April 25, 2016, 05:05 PM

Giving Back to National Science Bowl

Ames Laboratory

Friday March 25, 2016, 12:05 PM

NMSU Undergrad Tackles 3D Particle Scattering Animations After Receiving JSA Research Assistantship

Thomas Jefferson National Accelerator Facility

Tuesday February 02, 2016, 10:05 AM

Shannon Greco: A Self-Described "STEM Education Zealot"

Princeton Plasma Physics Laboratory

Monday November 16, 2015, 04:05 PM

Rare Earths for Life: An 85th Birthday Visit with Mr. Rare Earth

Ames Laboratory

Tuesday October 20, 2015, 01:05 PM

Meet Robert Palomino: 'Give Everything a Shot!'

Brookhaven National Laboratory

Tuesday April 22, 2014, 11:30 AM

University of Utah Makes Solar Accessible

University of Utah

Wednesday March 06, 2013, 03:40 PM

Student Innovator at Rensselaer Polytechnic Institute Seeks Brighter, Smarter, and More Efficient LEDs

Rensselaer Polytechnic Institute (RPI)

Friday November 16, 2012, 10:00 AM

Texas Tech Energy Commerce Students, Community Light up Tent City

Texas Tech University

Wednesday November 23, 2011, 10:45 AM

Don't Get 'Frosted' Over Heating Your Home This Winter

Temple University

Wednesday July 06, 2011, 06:00 PM

New Research Center To Tackle Critical Challenges Related to Aircraft Design, Wind Energy, Smart Buildings

Rensselaer Polytechnic Institute (RPI)

Friday April 22, 2011, 09:00 AM

First Polymer Solar-Thermal Device Heats Home, Saves Money

Wake Forest University

Friday April 15, 2011, 12:25 PM

Like Superman, American University Will Get Its Energy from the Sun

American University

Thursday February 10, 2011, 05:00 PM

ARRA Grant to Help Fund Seminary Building Green Roof

University of Chicago

Tuesday December 07, 2010, 05:00 PM

UC San Diego Installing 2.8 Megawatt Fuel Cell to Anchor Energy Innovation Park

University of California San Diego

Monday November 01, 2010, 12:50 PM

Rensselaer Smart Lighting Engineering Research Center Announces First Deployment of New Technology on Campus

Rensselaer Polytechnic Institute (RPI)

Friday September 10, 2010, 12:40 PM

Ithaca College Will Host Regional Clean Energy Summit

Ithaca College

Tuesday July 27, 2010, 10:30 AM

Texas Governor Announces $8.4 Million Award to Create Renewable Energy Institute

Texas Tech University

Friday May 07, 2010, 04:20 PM

Creighton University to Offer New Alternative Energy Program

Creighton University

Wednesday May 05, 2010, 09:30 AM

National Engineering Program Seeks Subject Matter Experts in Energy

JETS Junior Engineering Technical Society

Wednesday April 21, 2010, 12:30 PM

Students Using Solar Power To Create Sustainable Solutions for Haiti, Peru

Rensselaer Polytechnic Institute (RPI)

Wednesday March 03, 2010, 07:00 PM

Helping Hydrogen: Student Inventor Tackles Challenge of Hydrogen Storage

Rensselaer Polytechnic Institute (RPI)

Thursday February 04, 2010, 02:00 PM

Turning Exercise into Electricity

Furman University

Thursday November 12, 2009, 12:45 PM

Campus Leaders Showing the Way to a Sustainable, Clean Energy Future

National Wildlife Federation (NWF)

Tuesday November 03, 2009, 04:20 PM

Furman University Receives $2.5 Million DOE Grant for Geothermal Project

Furman University

Thursday September 17, 2009, 02:45 PM

Could Sorghum Become a Significant Alternative Fuel Source?

Salisbury University

Wednesday September 16, 2009, 11:15 AM

Students Navigating the Hudson River With Hydrogen Fuel Cells

Rensselaer Polytechnic Institute (RPI)

Wednesday September 16, 2009, 10:00 AM

College Presidents Flock to D.C., Urge Senate to Pass Clean Energy Bill

National Wildlife Federation (NWF)

Wednesday July 01, 2009, 04:15 PM

Northeastern Announces New Professional Master's in Energy Systems

Northeastern University

Friday October 12, 2007, 09:35 AM

Kansas Rural Schools To Receive Wind Turbines

Kansas State University

Thursday August 17, 2006, 05:30 PM

High Gas Prices Here to Stay, Says Engineering Professor

Rowan University





Showing results

0-4 Of 2215