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Inertial confinement fusion (ICF) is a fusion energy process that initiates nuclear fusion reactions by compressing and heating targets filled with fuel. The targets are small pellets, typically containing deuterium (2H) and tritium (3H).
The National Ignition Facility (NIF) is a laser-based inertial confinement fusion (ICF) research device, located at Lawrence Livermore National Laboratory in Livermore, California, United States. NIF's mission is to achieve fusion ignition with high energy gain. It achieved the first instance of scientific breakeven controlled fusion in an experiment on December 5, 2022, with an energy gain factor of 1.5. It supports nuclear weapon maintenance and design by studying the behavior of matter under the conditions found within nuclear explosions.
David Herbert Munro is a physicist at Lawrence Livermore National Laboratory (LLNL) who created the programming language Yorick as well as the scientific graphics library Gist.
Nova was a high-power laser built at the Lawrence Livermore National Laboratory (LLNL) in California, United States, in 1984 which conducted advanced inertial confinement fusion (ICF) experiments until its dismantling in 1999. Nova was the first ICF experiment built with the intention of reaching "ignition", the condition where self heating of the fusion plasma exceeds all losses. Although Nova failed in this goal, the data it generated clearly defined the problem as being mostly a result of Rayleigh–Taylor instability, leading to the design of the National Ignition Facility, Nova's successor. Nova also generated considerable amounts of data on high-density matter physics, regardless of the lack of ignition, which is useful both in fusion power and nuclear weapons research.
Inertial Fusion Energy is a proposed approach to building a nuclear fusion power plant based on performing inertial confinement fusion at industrial scale. This approach to fusion power is still in a research phase. ICF first developed shortly after the development of the laser in 1960, but was a classified US research program during its earliest years. In 1972, John Nuckolls wrote a paper predicting that compressing a target could create conditions where fusion reactions are chained together, a process known as fusion ignition or a burning plasma. On August 8, 2021, the NIF at Livermore National Laboratory became the first ICF facility in the world to demonstrate this. This breakthrough drove the US Department of Energy to create an Inertial Fusion Energy program in 2022 with a budget of 3 million dollars in its first year.
Argus was a two-beam high power infrared neodymium doped silica glass laser with a 20 cm (7.9 in) output aperture built at Lawrence Livermore National Laboratory in 1976 for the study of inertial confinement fusion. Argus advanced the study of laser-target interaction and paved the way for the construction of its successor, the 20 beam Shiva laser.
Fusion ignition is the point at which a nuclear fusion reaction becomes self-sustaining. This occurs when the energy being given off by the reaction heats the fuel mass more rapidly than it cools. In other words, fusion ignition is the point at which the increasing self-heating of the nuclear fusion removes the need for external heating. This is quantified by the Lawson criterion. Ignition can also be defined by the fusion energy gain factor.
LASNEX is a computer program that simulates the interactions between x-rays and a plasma, along with many effects associated with these interactions. The program is used to predict the performance of inertial confinement fusion (ICF) devices such as the Nova laser or proposed particle beam "drivers". Versions of LASNEX have been used since the late 1960s or early 1970s, and the program has been constantly updated. LASNEX's existence was mentioned in John Nuckolls' seminal paper in Nature in 1972 that first widely introduced the ICF concept, saying it was "...like breaking an enemy code. It tells you how many divisions to bring to bear on a problem."
Omar Hurricane is a physicist at Lawrence Livermore National Laboratory, in the thermonuclear and inertial confinement fusion design division. Hurricane completed his Ph.D. at the University of California, Los Angeles (UCLA) under the supervision of Professor René Pellat in 1994. He remained at UCLA as a postdoc under adviser Steven Cowley, studying the kink and nonlinear ballooning mode instability in high-beta plasmas until joining LLNL in 1998 as a designer in A-Division.
LIFE, short for Laser Inertial Fusion Energy, was a fusion energy effort run at Lawrence Livermore National Laboratory between 2008 and 2013. LIFE aimed to develop the technologies necessary to convert the laser-driven inertial confinement fusion concept being developed in the National Ignition Facility (NIF) into a practical commercial power plant, a concept known generally as inertial fusion energy (IFE). LIFE used the same basic concepts as NIF, but aimed to lower costs using mass-produced fuel elements, simplified maintenance, and diode lasers with higher electrical efficiency.
Félicie Albert is a French and American physicist working on laser plasma accelerators. She is the deputy director for the Center for High Energy Density Science at Lawrence Livermore National Laboratory (LLNL) and staff scientist at the National Ignition Facility and Photon Science Directorate and the Joint High Energy Density Sciences organization.
Dmitri Dmitriyevich Ryutov is a Russian theoretical plasma physicist.
John D. Lindl is an American physicist who specializes in inertial confinement fusion (ICF). He is currently the chief scientist of the National Ignition Facility at the Lawrence Livermore National Laboratory.
Kimberly Susan Budil is an American physicist who is the 13th and current director of Lawrence Livermore National Laboratory, making her the first woman to hold this position. She completed her bachelor's degree in physics from the University of Illinois Chicago, and her master's and doctorate in applied science from the University of California, Davis. She collaborated with Nobel laureate Donna Strickland, and made significant contributions to the field of high-power, ultra-fast lasers. Starting her career at Lawrence Livermore National Laboratory in 1987, she held various roles across government departments, including the Department of Energy and the Department of Defense. In 2014, she managed relations between the University of California's campuses and the three Department of Energy labs it manages. Budil, who was made a fellow of the American Physical Society in 2019, has also been a prominent advocate for women in science.
The history of nuclear fusion began early in the 20th century as an inquiry into how stars powered themselves and expanded to incorporate a broad inquiry into the nature of matter and energy, as potential applications expanded to include warfare, energy production and rocket propulsion.
Tammy Ma is an American plasma physicist who works on inertial confinement fusion at the Lawrence Livermore National Laboratory.
Sharon Gail Glendinning is an American experimental physicist.
Denise Hinkel is a plasma physicist at Lawrence Livermore National Laboratory.
Andrea Lynn "Annie" Kritcher is an American nuclear engineer and physicist who works at the Lawrence Livermore National Laboratory. She was responsible for the development of Hybrid-E, a capsule that enables inertial confinement fusion. She was elected Fellow of the American Physical Society in 2022.
Maria Gatu Johnson is a Swedish-American plasma physicist whose research involves the use of neutron spectrometry to study inertial confinement fusion and stellar nucleosynthesis. She works at the Massachusetts Institute of Technology as a principal research scientist in the MIT Plasma Science and Fusion Center.
References
- 1 2 3 Focused Team, Focus Energy, retrieved 2025-01-24
- ↑ Vaziri, Aidin (October 24, 2024), "Laser fusion startup moves from Austin to Bay Area, aims to power S.F. with 'three soda cans'", San Francisco Chronicle, retrieved 2025-01-24
- 1 2 "Debra Callahan, Physicist", Women of NIF (PDF), Lawrence Livermore National Laboratory, 2020, p. 7
- 1 2 LLNL physicist Debbie Callahan receives fusion leadership award, Lawrence Livermore National Laboratory, July 25, 2022, retrieved 2025-01-24
- 1 2 Debra Callahan Receives 2023 Ronald C. Davidson Award for Plasma Physics, AIP Publishing, October 25, 2023, retrieved 2025-01-24
- ↑ "Laser fusion work wins APS John Dawson Award", Optics.org, SPIE, August 30, 2012, retrieved 2025-01-24
- ↑ APS Fellows archive, American Physical Society, retrieved 2025-01-24