Development of an inertial confinement fusion platform to study charged-particle-producing nuclear reactions relevant to nuclear astrophysics
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- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); HEDP DIVISION, MIT PLASMA SCIENCE AND FUSION CENTER
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Indiana Univ., Bloomington, IN (United States)
- Ohio Univ., Athens, OH (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of Rochester, NY (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)
- General Atomics, San Diego, CA (United States)
- Atomic Weapons Establishment (AWE), Reading (United Kingdom). Plasma Physics Dept.
Here, this paper describes the development of a platform to study astrophysically relevant nuclear reactions using inertial-confinement fusion implosions on the OMEGA and National Ignition Facility laser facilities, with a particular focus on optimizing the implosions to study charged-particle- producing reactions. Primary requirements on the platform are high yield, for high statistics in the fusion product measurements, combined with low areal density, to allow the charged fusion products to escape. This is optimally achieved with direct-drive exploding pusher implosions using thin-glass-shell capsules. Mitigation strategies to eliminate a possible target sheath potential which would accelerate the emitted ions are discussed. The potential impact of kinetic effects on the implosions is also considered. The platform is initially employed to study the complementary T(t,2n)α, T(3He,np)α and 3He(3He,2p)α reactions. Proof-of-principle results from the first experiments demonstrating the ability to accurately measure the energy and yields of charged particles are presented. Lessons learned from these experiments will be used in studies of other reactions. Ultimately, the goals are to explore thermonuclear reaction rates and fundamental nuclear physics in stellarlike plasma environments, and to push this new frontier of nuclear astrophysics into unique regimes not reachable through existing platforms, with thermal ion velocity distributions, plasma screening, and low reactant energies.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Organization:
- USDOE; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- 89233218CNA000001; AC52-07NA27344; FG02-88ER40387; NA0001857; NA0002035; NA0002726; NA0002905; NA0002949
- OSTI ID:
- 1348901
- Alternate ID(s):
- OSTI ID: 1348903
OSTI ID: 1349782
OSTI ID: 1363698
OSTI ID: 1574759
- Report Number(s):
- LA-UR--19-30932; LLNL-JRNL--704778
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 4 Vol. 24; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Development of an inertial confinement fusion platform to study charged particle-producing nuclear reactions relevant to nuclear astrophysics
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Tue Oct 16 00:00:00 EDT 2018
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OSTI ID:1879861