skip to main content

DOE PAGESDOE PAGES

Title: Direct-drive DT implosions with Knudsen number variations

Direct-drive implosions of DT-filled plastic-shells have been conducted at the Omega laser facility, measuring nuclear yields while varying Knudsen numbers (i.e., the ratio of mean free path of fusing ions to the length of fuel region) by adjusting both shell thickness (e.g., 7.5, 15, 20, 30 μm) and fill pressure (e.g., 2, 5, 15 atm). In addition, the fusion reactivity reduction model showed a stronger effect on yield as the Knudsen number increases (or the shell thickness decreases). The Reduced-Ion-Kinetic (RIK) simulation which includes both fusion reactivity reduction and mix model was necessary to provide a better match between the observed neutron yields and those simulated.
Authors:
 [1] ;  [1] ; ORCiD logo [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [3] ;  [4]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Atomic Weapons Establishment (United Kingdom)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  4. Laboratory for Laser Energetics, Rochester, NY (United States)
Publication Date:
Report Number(s):
LA-UR-15-29134
Journal ID: ISSN 1742-6588
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 717; Journal ID: ISSN 1742-6588
Publisher:
IOP Publishing
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1337088

Kim, Yong Ho, Herrmann, Hans W., Hoffman, Nelson M., Schmitt, Mark J., Bradley, P.aul Andrew, Gales, Steve, Horsfield, Colin J., Rubery, Mike, Leatherland, Alex, Johnson, Maria Gatu, Frenje, J. A., and Glebov, V. Yu. Direct-drive DT implosions with Knudsen number variations. United States: N. p., Web. doi:10.1088/1742-6596/717/1/012030.
Kim, Yong Ho, Herrmann, Hans W., Hoffman, Nelson M., Schmitt, Mark J., Bradley, P.aul Andrew, Gales, Steve, Horsfield, Colin J., Rubery, Mike, Leatherland, Alex, Johnson, Maria Gatu, Frenje, J. A., & Glebov, V. Yu. Direct-drive DT implosions with Knudsen number variations. United States. doi:10.1088/1742-6596/717/1/012030.
Kim, Yong Ho, Herrmann, Hans W., Hoffman, Nelson M., Schmitt, Mark J., Bradley, P.aul Andrew, Gales, Steve, Horsfield, Colin J., Rubery, Mike, Leatherland, Alex, Johnson, Maria Gatu, Frenje, J. A., and Glebov, V. Yu. 2016. "Direct-drive DT implosions with Knudsen number variations". United States. doi:10.1088/1742-6596/717/1/012030. https://www.osti.gov/servlets/purl/1337088.
@article{osti_1337088,
title = {Direct-drive DT implosions with Knudsen number variations},
author = {Kim, Yong Ho and Herrmann, Hans W. and Hoffman, Nelson M. and Schmitt, Mark J. and Bradley, P.aul Andrew and Gales, Steve and Horsfield, Colin J. and Rubery, Mike and Leatherland, Alex and Johnson, Maria Gatu and Frenje, J. A. and Glebov, V. Yu},
abstractNote = {Direct-drive implosions of DT-filled plastic-shells have been conducted at the Omega laser facility, measuring nuclear yields while varying Knudsen numbers (i.e., the ratio of mean free path of fusing ions to the length of fuel region) by adjusting both shell thickness (e.g., 7.5, 15, 20, 30 μm) and fill pressure (e.g., 2, 5, 15 atm). In addition, the fusion reactivity reduction model showed a stronger effect on yield as the Knudsen number increases (or the shell thickness decreases). The Reduced-Ion-Kinetic (RIK) simulation which includes both fusion reactivity reduction and mix model was necessary to provide a better match between the observed neutron yields and those simulated.},
doi = {10.1088/1742-6596/717/1/012030},
journal = {Journal of Physics. Conference Series},
number = ,
volume = 717,
place = {United States},
year = {2016},
month = {5}
}