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Title: Study of self-generated fields in strongly-shocked, low-density systems using broadband proton radiography

Here we report results from experiments on the study of field generation at the shock front in low-density gas configured in quasi-planar geometry using broad-energy proton probing. Experiments were conducted using three long pulse laser beams with a total energy of 6.4 kJ in 2 ns for shock generation and an 850 J, 10 ps short pulse laser to produce broadband protons for radiography. Observations of the deflection pattern of probe protons show the existence of self-generated electric fields at the shock front with the electric potential on the order of 300 V. Finally, analytical and particle tracking methods support this conclusion.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ; ORCiD logo [1] ;  [1] ;  [3] ;  [3]
  1. Univ. of California, San Diego, CA (United States). Center for Energy Research
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Grant/Contract Number:
SC0014600; AC52-07NA27344; FC52-08NA28752
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 111; Journal Issue: 3; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Univ. of California, San Diego, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); USDOE National Nuclear Security Administration (NNSA); LLNL Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; isotopes; polymers; computer graphics; transition metals; chemical elements; lasers; shock waves; radiography; radiograph; electrostatics
OSTI Identifier:
1482221
Alternate Identifier(s):
OSTI ID: 1372129

Hua, R., Sio, H., Wilks, S. C., Beg, F. N., McGuffey, C., Bailly-Grandvaux, M., Collins, G. W., and Ping, Y.. Study of self-generated fields in strongly-shocked, low-density systems using broadband proton radiography. United States: N. p., Web. doi:10.1063/1.4995226.
Hua, R., Sio, H., Wilks, S. C., Beg, F. N., McGuffey, C., Bailly-Grandvaux, M., Collins, G. W., & Ping, Y.. Study of self-generated fields in strongly-shocked, low-density systems using broadband proton radiography. United States. doi:10.1063/1.4995226.
Hua, R., Sio, H., Wilks, S. C., Beg, F. N., McGuffey, C., Bailly-Grandvaux, M., Collins, G. W., and Ping, Y.. 2017. "Study of self-generated fields in strongly-shocked, low-density systems using broadband proton radiography". United States. doi:10.1063/1.4995226. https://www.osti.gov/servlets/purl/1482221.
@article{osti_1482221,
title = {Study of self-generated fields in strongly-shocked, low-density systems using broadband proton radiography},
author = {Hua, R. and Sio, H. and Wilks, S. C. and Beg, F. N. and McGuffey, C. and Bailly-Grandvaux, M. and Collins, G. W. and Ping, Y.},
abstractNote = {Here we report results from experiments on the study of field generation at the shock front in low-density gas configured in quasi-planar geometry using broad-energy proton probing. Experiments were conducted using three long pulse laser beams with a total energy of 6.4 kJ in 2 ns for shock generation and an 850 J, 10 ps short pulse laser to produce broadband protons for radiography. Observations of the deflection pattern of probe protons show the existence of self-generated electric fields at the shock front with the electric potential on the order of 300 V. Finally, analytical and particle tracking methods support this conclusion.},
doi = {10.1063/1.4995226},
journal = {Applied Physics Letters},
number = 3,
volume = 111,
place = {United States},
year = {2017},
month = {7}
}

Works referenced in this record:

Energetic proton generation in ultra-intense laser�solid interactions
journal, February 2001
  • Wilks, S. C.; Langdon, A. B.; Cowan, T. E.
  • Physics of Plasmas, Vol. 8, Issue 2, p. 542-549
  • DOI: 10.1063/1.1333697