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Title: Progress in Long Scale Length Laser-Plasma Interactions

Abstract

The first experiments on the National Ignition Facility (NIF) have employed the first four beams to measure propagation and laser backscattering losses in large ignition-size plasmas. Gas-filled targets between 2 mm and 7 mm length have been heated from one side by overlapping the focal spots of the four beams from one quad operated at 351 nm (3{omega}) with a total intensity of 2 x 10{sup 15} W cm{sup -2}. The targets were filled with 1 atm of CO{sub 2} producing of up to 7 mm long homogeneously heated plasmas with densities of n{sub e} = 6 x 10{sup 20} cm{sup -3} and temperatures of T{sub e} = 2 keV. The high energy in a NIF quad of beams of 16kJ, illuminating the target from one direction, creates unique conditions for the study of laser plasma interactions at scale lengths not previously accessible. The propagation through the large-scale plasma was measured with a gated x-ray imager that was filtered for 3.5 keV x rays. These data indicate that the beams interact with the full length of this ignition-scale plasma during the last {approx}1 ns of the experiment. During that time, the full aperture measurements of the stimulated Brillouin scattering andmore » stimulated Raman scattering show scattering into the four focusing lenses of 6% for the smallest length ({approx}2 mm). increasing to 12% for {approx}7 mm. These results demonstrate the NIF experimental capabilities and further provide a benchmark for three-dimensional modeling of the laser-plasma interactions at ignition-size scale lengths.« less

Authors:
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Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15006528
Report Number(s):
UCRL-CONF-155301
Journal ID: ISSN 0029--5515; TRN: US0400846
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Journal Volume: 44; Journal Issue: 12; Conference: Third International Conference on Inertial Fusion Sciences and Applications, Monterey, CA (US), 09/07/2003--09/12/2003; Other Information: PBD: 11 Nov 2003
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APERTURES; BACKSCATTERING; BENCHMARKS; BRILLOUIN EFFECT; FOCUSING; LASERS; LENSES; PLASMA; SCATTERING; SIMULATION; TARGETS; US NATIONAL IGNITION FACILITY

Citation Formats

Glenzer, S H, Arnold, P, Bardsley, G, Berger, R L, Bonanno, G, Borger, T, Bower, D E, Bowers, M, Bryant, R, Buckman, S, Burkhart, S C, Campbell, K, Chrisp, M P, Cohen, B I, Constantin, G, Cooper, F, Cox, J, Dewald, E, Divol, L, Dixit, S, Duncan, J, Eder, D, Edwards, J, Erbert, G, Felker, B, Fornes, J, Frieders, G, Froula, D H, Gardner, S D, Gates, C, Gonzalez, M, Grace, S, Gregori, G, Greenwood, A, Griffith, R, Hall, T, Hammel, B A, Haynam, C, Heestand, G, Henesian, M, Hermes, G, Hinkel, D, Holder, J, Holdner, F, Holtmeier, G, Hsing, W, Huber, S, James, T, Johnson, S, Jones, O S, Kalantar, D, Kamperschroer, J H, Kauffman, R, Kelleher, T, Knight, J, Kirkwood, R K, Kruer, W L, Labiak, W, Landen, O L, Langdon, A B, Langer, S, Latray, D, Lee, A, Lee, F D, Lund, D, MacGowan, B, Marshall, S, McBride, J, McCarville, T, McGrew, L, Mackinnon, A J, Mahavandi, S, Manes, K, Marshall, C, Mertens, E, Meezan, N, Miller, G, Montelongo, S, Moody, J D, Moses, E, Munro, D, Murray, J, Neumann, J, Newton, M, Ng, E, Niemann, C, Nikitin, A, Opsahl, P, Padilla, E, Parham, T, Parrish, G, Petty, C, Polk, M, Powell, C, Reinbachs, I, Rekow, V, Rinnert, R, Riordan, B, and Rhodes, M. Progress in Long Scale Length Laser-Plasma Interactions. United States: N. p., 2003. Web. doi:10.1088/0029-5515/44/12/S08.
Glenzer, S H, Arnold, P, Bardsley, G, Berger, R L, Bonanno, G, Borger, T, Bower, D E, Bowers, M, Bryant, R, Buckman, S, Burkhart, S C, Campbell, K, Chrisp, M P, Cohen, B I, Constantin, G, Cooper, F, Cox, J, Dewald, E, Divol, L, Dixit, S, Duncan, J, Eder, D, Edwards, J, Erbert, G, Felker, B, Fornes, J, Frieders, G, Froula, D H, Gardner, S D, Gates, C, Gonzalez, M, Grace, S, Gregori, G, Greenwood, A, Griffith, R, Hall, T, Hammel, B A, Haynam, C, Heestand, G, Henesian, M, Hermes, G, Hinkel, D, Holder, J, Holdner, F, Holtmeier, G, Hsing, W, Huber, S, James, T, Johnson, S, Jones, O S, Kalantar, D, Kamperschroer, J H, Kauffman, R, Kelleher, T, Knight, J, Kirkwood, R K, Kruer, W L, Labiak, W, Landen, O L, Langdon, A B, Langer, S, Latray, D, Lee, A, Lee, F D, Lund, D, MacGowan, B, Marshall, S, McBride, J, McCarville, T, McGrew, L, Mackinnon, A J, Mahavandi, S, Manes, K, Marshall, C, Mertens, E, Meezan, N, Miller, G, Montelongo, S, Moody, J D, Moses, E, Munro, D, Murray, J, Neumann, J, Newton, M, Ng, E, Niemann, C, Nikitin, A, Opsahl, P, Padilla, E, Parham, T, Parrish, G, Petty, C, Polk, M, Powell, C, Reinbachs, I, Rekow, V, Rinnert, R, Riordan, B, & Rhodes, M. Progress in Long Scale Length Laser-Plasma Interactions. United States. doi:10.1088/0029-5515/44/12/S08.
Glenzer, S H, Arnold, P, Bardsley, G, Berger, R L, Bonanno, G, Borger, T, Bower, D E, Bowers, M, Bryant, R, Buckman, S, Burkhart, S C, Campbell, K, Chrisp, M P, Cohen, B I, Constantin, G, Cooper, F, Cox, J, Dewald, E, Divol, L, Dixit, S, Duncan, J, Eder, D, Edwards, J, Erbert, G, Felker, B, Fornes, J, Frieders, G, Froula, D H, Gardner, S D, Gates, C, Gonzalez, M, Grace, S, Gregori, G, Greenwood, A, Griffith, R, Hall, T, Hammel, B A, Haynam, C, Heestand, G, Henesian, M, Hermes, G, Hinkel, D, Holder, J, Holdner, F, Holtmeier, G, Hsing, W, Huber, S, James, T, Johnson, S, Jones, O S, Kalantar, D, Kamperschroer, J H, Kauffman, R, Kelleher, T, Knight, J, Kirkwood, R K, Kruer, W L, Labiak, W, Landen, O L, Langdon, A B, Langer, S, Latray, D, Lee, A, Lee, F D, Lund, D, MacGowan, B, Marshall, S, McBride, J, McCarville, T, McGrew, L, Mackinnon, A J, Mahavandi, S, Manes, K, Marshall, C, Mertens, E, Meezan, N, Miller, G, Montelongo, S, Moody, J D, Moses, E, Munro, D, Murray, J, Neumann, J, Newton, M, Ng, E, Niemann, C, Nikitin, A, Opsahl, P, Padilla, E, Parham, T, Parrish, G, Petty, C, Polk, M, Powell, C, Reinbachs, I, Rekow, V, Rinnert, R, Riordan, B, and Rhodes, M. Tue . "Progress in Long Scale Length Laser-Plasma Interactions". United States. doi:10.1088/0029-5515/44/12/S08. https://www.osti.gov/servlets/purl/15006528.
@article{osti_15006528,
title = {Progress in Long Scale Length Laser-Plasma Interactions},
author = {Glenzer, S H and Arnold, P and Bardsley, G and Berger, R L and Bonanno, G and Borger, T and Bower, D E and Bowers, M and Bryant, R and Buckman, S and Burkhart, S C and Campbell, K and Chrisp, M P and Cohen, B I and Constantin, G and Cooper, F and Cox, J and Dewald, E and Divol, L and Dixit, S and Duncan, J and Eder, D and Edwards, J and Erbert, G and Felker, B and Fornes, J and Frieders, G and Froula, D H and Gardner, S D and Gates, C and Gonzalez, M and Grace, S and Gregori, G and Greenwood, A and Griffith, R and Hall, T and Hammel, B A and Haynam, C and Heestand, G and Henesian, M and Hermes, G and Hinkel, D and Holder, J and Holdner, F and Holtmeier, G and Hsing, W and Huber, S and James, T and Johnson, S and Jones, O S and Kalantar, D and Kamperschroer, J H and Kauffman, R and Kelleher, T and Knight, J and Kirkwood, R K and Kruer, W L and Labiak, W and Landen, O L and Langdon, A B and Langer, S and Latray, D and Lee, A and Lee, F D and Lund, D and MacGowan, B and Marshall, S and McBride, J and McCarville, T and McGrew, L and Mackinnon, A J and Mahavandi, S and Manes, K and Marshall, C and Mertens, E and Meezan, N and Miller, G and Montelongo, S and Moody, J D and Moses, E and Munro, D and Murray, J and Neumann, J and Newton, M and Ng, E and Niemann, C and Nikitin, A and Opsahl, P and Padilla, E and Parham, T and Parrish, G and Petty, C and Polk, M and Powell, C and Reinbachs, I and Rekow, V and Rinnert, R and Riordan, B and Rhodes, M},
abstractNote = {The first experiments on the National Ignition Facility (NIF) have employed the first four beams to measure propagation and laser backscattering losses in large ignition-size plasmas. Gas-filled targets between 2 mm and 7 mm length have been heated from one side by overlapping the focal spots of the four beams from one quad operated at 351 nm (3{omega}) with a total intensity of 2 x 10{sup 15} W cm{sup -2}. The targets were filled with 1 atm of CO{sub 2} producing of up to 7 mm long homogeneously heated plasmas with densities of n{sub e} = 6 x 10{sup 20} cm{sup -3} and temperatures of T{sub e} = 2 keV. The high energy in a NIF quad of beams of 16kJ, illuminating the target from one direction, creates unique conditions for the study of laser plasma interactions at scale lengths not previously accessible. The propagation through the large-scale plasma was measured with a gated x-ray imager that was filtered for 3.5 keV x rays. These data indicate that the beams interact with the full length of this ignition-scale plasma during the last {approx}1 ns of the experiment. During that time, the full aperture measurements of the stimulated Brillouin scattering and stimulated Raman scattering show scattering into the four focusing lenses of 6% for the smallest length ({approx}2 mm). increasing to 12% for {approx}7 mm. These results demonstrate the NIF experimental capabilities and further provide a benchmark for three-dimensional modeling of the laser-plasma interactions at ignition-size scale lengths.},
doi = {10.1088/0029-5515/44/12/S08},
journal = {},
issn = {0029--5515},
number = 12,
volume = 44,
place = {United States},
year = {2003},
month = {11}
}

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