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Title: A Particle X-ray Temporal Diagnostic (PXTD) for studies of kinetic, multi-ion effects, and ion-electron equilibration rates in Inertial Confinement Fusion plasmas at OMEGA (invited)

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4961552· OSTI ID:1325775

Here, a Particle X-ray Temporal Diagnostic (PXTD) has been implemented on OMEGA for simultaneous time-resolved measurements of several nuclear products as well as the x-ray continuum produced in High Energy Density Plasmas and Inertial Confinement Fusion implosions. The PXTD removes systematic timing uncertainties typically introduced by using multiple instruments, and it has been used to measure DD, DT, D3He, and T3He reaction histories and the emission history of the x-ray core continuum with relative timing uncertainties within ±10-20 ps. This enables, for the first time, accurate and simultaneous measurements of the x-ray emission histories, nuclear reaction histories, their time differences, and measurements of Ti(t) and Te(t) from which an assessment of multiple-ion-fluid effects, kinetic effects during the shock-burn phase, and ion-electron equilibration rates can be made.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001857; NA0002949; NA0002726; FC52-08NA28752; 416107-G; AC52-07NA27344; AC52-06NA25396
OSTI ID:
1325775
Alternate ID(s):
OSTI ID: 1374514; OSTI ID: 1417160
Report Number(s):
LLNL-JRNL-733865; LA-UR-17-27853; RSINAK; TRN: US1700097
Journal Information:
Review of Scientific Instruments, Vol. 87, Issue 11; Conference: 21. Topical Conference on High Temperature Plasma Diagnostics (HTPD 2016), Madison, WI (United States), 5-9 Jun 2016; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

References (13)

Tests of the hydrodynamic equivalence of direct-drive implosions with different D2 and He3 mixtures journal May 2006
25 ps neutron detector for measuring ICF‐target burn history journal January 1995
Anomalous yield reduction in direct-drive deuterium/tritium implosions due to H3e addition journal May 2009
Evidence for Stratification of Deuterium-Tritium Fuel in Inertial Confinement Fusion Implosions journal February 2012
Exploration of the Transition from the Hydrodynamiclike to the Strongly Kinetic Regime in Shock-Driven Implosions journal May 2014
Ion Thermal Decoupling and Species Separation in Shock-Driven Implosions journal January 2015
Relativistic calculation of fusion product spectra for thermonuclear plasmas journal November 1998
First Observations of Nonhydrodynamic Mix at the Fuel-Shell Interface in Shock-Driven Inertial Confinement Implosions journal April 2014
Ten-inch manipulator-based neutron temporal diagnostic for cryogenic experiments on OMEGA journal March 2003
Measuring shock-bang timing and ρR evolution of D3He implosions at OMEGA journal May 2004
Advances in compact proton spectrometers for inertial-confinement fusion and plasma nuclear science journal October 2012
Nova experimental facility (invited) journal August 1986
HYADES—A plasma hydrodynamics code for dense plasma studies journal January 1994

Cited By (7)

Laser-direct-drive program: Promise, challenge, and path forward journal March 2017
Fuel-ion diffusion in shock-driven inertial confinement fusion implosions journal September 2019
Progress on observations of interspecies ion separation in inertial-confinement-fusion implosions via imaging x-ray spectroscopy journal June 2019
Probing ion species separation and ion thermal decoupling in shock-driven implosions using multiple nuclear reaction histories journal July 2019
Kinetic physics in ICF: present understanding and future directions journal April 2018
Study of high-Z-coated ignition target by detailed configuration accounting atomic physics for direct-drive inertial confinement fusion journal November 2018
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas journal January 2020