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View article: Paradise Blues
Paradise Blues Open
Paradise Blues is an unconventional history of the United States of America, an unusual travel guide that follows and renders visible the country's paths of nature, history and civilisation. Christof Mauch is a leading German historian who…
View article: Neutron time-of-flight detectors (nTOF) used at Sandia’s Z-Machine
Neutron time-of-flight detectors (nTOF) used at Sandia’s Z-Machine Open
Neutron time-of-flight (nTOF) detectors have been used on Sandia National Laboratories’ Z-Machine for inertial confinement fusion and magnetized liner fusion experiments to infer physics parameters including the apparent fuel-ion temperatu…
View article: Inferring neutron yields using indium activation samples for small fractions of tritium added to deuterium fuel in inertial confinement fusion (ICF) experiments
Inferring neutron yields using indium activation samples for small fractions of tritium added to deuterium fuel in inertial confinement fusion (ICF) experiments Open
In inertial confinement fusion experiments, the neutron yield is an important metric for thermonuclear fusion performance. Neutron activation diagnostics can be used to infer neutron yields. The material used for neutron activation diagnos…
View article: A Neutron Recoil-Spectrometer for Measuring Yield and Determining Liner Areal Densities at the Z Facility.
A Neutron Recoil-Spectrometer for Measuring Yield and Determining Liner Areal Densities at the Z Facility. Open
[C. K. Li et al., Phys. Plasmas 8, 4902 (2001)] were used to authenticate the MRS data for low-rhoR plastic capsule implosions, and the rhoR values inferred from these techniques are in excellent agreement, indicating that the MRS techniqu…
View article: A Forward Analytic Model of Neutron Time-of-Flight Signals for Inferring Ion Temperatures from MagLIF Experiments
A Forward Analytic Model of Neutron Time-of-Flight Signals for Inferring Ion Temperatures from MagLIF Experiments Open
A forward analytic model is required to rapidly simulate the neutron time-of-flight (nToF) signals that result from magnetized liner inertial fusion (MagLIF) experiments at Sandia’s Z Pulsed Power Facility. Various experimental parameters,…
View article: Performance Scaling in Magnetized Liner Inertial Fusion Experiments
Performance Scaling in Magnetized Liner Inertial Fusion Experiments Open
We present experimental results from the first systematic study of performance scaling with drive parameters for a magnetoinertial fusion concept. In magnetized liner inertial fusion experiments, the burn-averaged ion temperature doubles t…
View article: Multichannel, triaxial, neutron time-of-flight diagnostic for experiments at the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi></mml:math> facility
Multichannel, triaxial, neutron time-of-flight diagnostic for experiments at the facility Open
Neutron bang times t_{bang} and mean neutron speeds u[over ¯] have been measured at the Z facility for a series of D_{2}-filled targets, in magnetized liner inertial fusion experiments. Measurements were made by a novel neutron time-of-fli…
View article: Novel beryllium-scintillator, neutron-fluence detector for magnetized liner inertial fusion experiments
Novel beryllium-scintillator, neutron-fluence detector for magnetized liner inertial fusion experiments Open
Progress in the development of a neutron detector employing the $^{9}\mathrm{Be}{(n,\ensuremath{\alpha})}^{6}\mathrm{He}({\ensuremath{\beta}}^{\ensuremath{-}},{\ensuremath{\tau}}_{1/2}=807\text{ }\text{ }\mathrm{ms})$ reaction is reported.…
View article: An Evaluation of Bang-Time Measurements from a Multichannel, Triaxial, nTOF Diagnostic for MagLIF Experiments at the Z facility
An Evaluation of Bang-Time Measurements from a Multichannel, Triaxial, nTOF Diagnostic for MagLIF Experiments at the Z facility Open
Neutron bang times for a series of MagLIF (Magnetic Liner Inertial Fusion) experiments with D2-filled targets have been measured at the Z facility. The emitted neutrons were detected as current-mode pulses in a multichannel, neutron time-o…
View article: Average neutron time-of-flight instrument response function inferred from single D-T neutron events within a plastic scintillator
Average neutron time-of-flight instrument response function inferred from single D-T neutron events within a plastic scintillator Open
The apparent ion temperature and neutron-reaction history are important characteristics of a fusion plasma. Extracting these quantities from a measured neutron-time-of-flight signal requires accurate knowledge of the instrument response fu…
View article: Modeling the one-dimensional imager of neutrons (ODIN) for neutron response functions at the Sandia Z facility
Modeling the one-dimensional imager of neutrons (ODIN) for neutron response functions at the Sandia Z facility Open
The one-dimensional imager of neutrons (ODIN) at the Sandia Z facility consists of a 10-cm block of tungsten with rolled edges, creating a slit imager with slit widths of either 250, 500, or 750 μm. Designed with a 1-m neutron imaging line…
View article: One dimensional imager of neutrons on the Z machine
One dimensional imager of neutrons on the Z machine Open
We recently developed a one-dimensional imager of neutrons on the Z facility. The instrument is designed for Magnetized Liner Inertial Fusion (MagLIF) experiments, which produce D-D neutrons yields of ∼3 × 1012. X-ray imaging indicates tha…
View article: Recent Progress and Future Potential of Magnetized Liner Inertial Fusion (MagLIF)
Recent Progress and Future Potential of Magnetized Liner Inertial Fusion (MagLIF) Open
The standard approaches to inertial confinement fusion (ICF) rely on implosion velocities greater than 300 km/s and spherical convergence to achieve the high fuel temperatures (T > 4 keV) and areal densities (ρr > 0.3 g/cm2) required for i…
View article: Nuclear Diagnostics at the National Ignition Facility, 2013-2015
Nuclear Diagnostics at the National Ignition Facility, 2013-2015 Open
The National Ignition Facility (NIF) relies on a suite of nuclear diagnostics to measure the neutronic output of experiments. Neutron time-of-flight (NTOF) and neutron activation diagnostics (NAD) provide performance metrics of absolute ne…
View article: Fusion-neutron measurements for magnetized liner inertial fusion experiments on the Z accelerator
Fusion-neutron measurements for magnetized liner inertial fusion experiments on the Z accelerator Open
Several magnetized liner inertial fusion (MagLIF) experiments have been conducted on the Z accelerator at Sandia National Laboratories since late 2013. Measurements of the primary DD (2.45 MeV) neutrons for these experiments suggest that t…
View article: The National Ignition Facility Diagnostic Set at the Completion of the National Ignition Campaign, September 2012
The National Ignition Facility Diagnostic Set at the Completion of the National Ignition Campaign, September 2012 Open
At the completion of the National Ignition Campaign (NIC), the National Ignition Facility (NIF) had about 36 different types of diagnostics. These were based on several decades of development on Nova and OMEGA and involved the whole U.S. i…