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Title: Thermal Temperature Measurements of Inertial Fusion Implosions

Abstract

Accurate measurement of the thermal temperature in inertially confined fusion plasmas is essential for characterizing ignition performance and validating the basic physics understanding of the stagnation conditions. Here we present experimental results from cryogenic deuterium-tritium implosions on the National Ignition Facility using a differential filter spectrometer designed to measure the thermal electron temperature from x-ray continuum emission from the stagnated plasma. Furthermore, electron temperature measurements, used in conjunction with the Doppler-broadened DT neutron spectra, allow one to infer the partition of energy in the hot spot between internal energy and unconverted kinetic energy.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1482877
Alternate Identifier(s):
OSTI ID: 1465885
Report Number(s):
LLNL-JRNL-749938
Journal ID: ISSN 0031-9007; 934546
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 8; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; indirect drive; inertial confinement fusion

Citation Formats

Jarrott, L. C., Bachmann, B., Ma, T., Benedetti, L. R., Field, F. E., Hartouni, E. P., Hatarik, R., Izumi, N., Khan, S. F., Landen, O. L., Nagel, S. R., Nora, R., Pak, A., Peterson, J. L., Schneider, M. B., Springer, P. T., and Patel, P. K. Thermal Temperature Measurements of Inertial Fusion Implosions. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.121.085001.
Jarrott, L. C., Bachmann, B., Ma, T., Benedetti, L. R., Field, F. E., Hartouni, E. P., Hatarik, R., Izumi, N., Khan, S. F., Landen, O. L., Nagel, S. R., Nora, R., Pak, A., Peterson, J. L., Schneider, M. B., Springer, P. T., & Patel, P. K. Thermal Temperature Measurements of Inertial Fusion Implosions. United States. doi:10.1103/PhysRevLett.121.085001.
Jarrott, L. C., Bachmann, B., Ma, T., Benedetti, L. R., Field, F. E., Hartouni, E. P., Hatarik, R., Izumi, N., Khan, S. F., Landen, O. L., Nagel, S. R., Nora, R., Pak, A., Peterson, J. L., Schneider, M. B., Springer, P. T., and Patel, P. K. Wed . "Thermal Temperature Measurements of Inertial Fusion Implosions". United States. doi:10.1103/PhysRevLett.121.085001. https://www.osti.gov/servlets/purl/1482877.
@article{osti_1482877,
title = {Thermal Temperature Measurements of Inertial Fusion Implosions},
author = {Jarrott, L. C. and Bachmann, B. and Ma, T. and Benedetti, L. R. and Field, F. E. and Hartouni, E. P. and Hatarik, R. and Izumi, N. and Khan, S. F. and Landen, O. L. and Nagel, S. R. and Nora, R. and Pak, A. and Peterson, J. L. and Schneider, M. B. and Springer, P. T. and Patel, P. K.},
abstractNote = {Accurate measurement of the thermal temperature in inertially confined fusion plasmas is essential for characterizing ignition performance and validating the basic physics understanding of the stagnation conditions. Here we present experimental results from cryogenic deuterium-tritium implosions on the National Ignition Facility using a differential filter spectrometer designed to measure the thermal electron temperature from x-ray continuum emission from the stagnated plasma. Furthermore, electron temperature measurements, used in conjunction with the Doppler-broadened DT neutron spectra, allow one to infer the partition of energy in the hot spot between internal energy and unconverted kinetic energy.},
doi = {10.1103/PhysRevLett.121.085001},
journal = {Physical Review Letters},
number = 8,
volume = 121,
place = {United States},
year = {2018},
month = {8}
}

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