Search

Your search keyword '"Milovich, J."' showing total 33 results
Start Over Author "Milovich, J." Search Limiters Full Text
33 results on '"Milovich, J."'

1. The impact of low-mode symmetry on inertial fusion energy output in the burning plasma state

Author

Ralph, J. E., Ross, J. S., Zylstra, A. B., Kritcher, A. L., Robey, H. F., Young, C. V., Hurricane, O. A., Pak, A., Callahan, D. A., Baker, K. L., Casey, D. T., Döppner, T., Divol, L., Hohenberger, M., Pape, S. Le, Patel, P. K., Tommasini, R., Ali, S. J., Amendt, P. A., Atherton, L. J., Bachmann, B., Bailey, D., Benedetti, L. R., Berzak Hopkins, L., Betti, R., Bhandarkar, S. D., Biener, J., Bionta, R. M., Birge, N. W., Bond, E. J., Bradley, D. K., Braun, T., Briggs, T. M., Bruhn, M. W., Celliers, P. M., Chang, B., Chapman, T., Chen, H., Choate, C., Christopherson, A. R., Clark, D. S., Crippen, J. W., Dewald, E. L., Dittrich, T. R., Edwards, M. J., Farmer, W. A., Field, J. E., Fittinghoff, D., Frenje, J., Gaffney, J., Gatu Johnson, M., Glenzer, S. H., Grim, G. P., Haan, S., Hahn, K. D., Hall, G. N., Hammel, B. A., Harte, J., Hartouni, E., Heebner, J. E., Hernandez, V. J., Herrmann, H. W., Herrmann, M. C., Hinkel, D. E., Ho, D. D., Holder, J. P., Hsing, W. W., Huang, H., Humbird, K. D., Izumi, N., Jarrott, L. C., Jeet, J., Jones, O., Kerbel, G. D., Kerr, S. M., Khan, S. F., Kilkenny, J., Kim, Y., Geppert-Kleinrath, H., Geppert-Kleinrath, V., Kong, C., Koning, J. M., Kroll, J. J., Kruse, M. K. G., Kustowski, B., Landen, O. L., Langer, S., Larson, D., Lemos, N. C., Lindl, J. D., Ma, T., MacDonald, M. J., MacGowan, B. J., Mackinnon, A. J., MacLaren, S. A., MacPhee, A. G., Marinak, M. M., Mariscal, D. A., Marley, E. V., Masse, L., Meaney, K. D., Meezan, N. B., Michel, P. A., Millot, M., Milovich, J. L., Moody, J. D., Moore, A. S., Morton, J. W., Murphy, T. J., Newman, K., Di Nicola, J.-M. G., Nikroo, A., Nora, R., Patel, M. V., Pelz, L. J., Peterson, J. L., Ping, Y., Pollock, B. B., Ratledge, M., Rice, N. G., Rinderknecht, H. G., Rosen, M., Rubery, M. S., Salmonson, J. D., Sater, J., Schiaffino, S., Schlossberg, D. J., Schneider, M. B., Schroeder, C. R., Scott, H. A., Sepke, S. M., Sequoia, K., Sherlock, M. W., Shin, S., Smalyuk, V. A., Spears, B. K., Springer, P. T., Stadermann, M., Stoupin, S., Strozzi, D. J., Suter, L. J., Thomas, C. A., Town, R. P. J., Trosseille, C., Tubman, E. R., Volegov, P. L., Weber, C. R., Widmann, K., Wild, C., Wilde, C. H., Van Wonterghem, B. M., Woods, D. T., Woodworth, B. N., Yamaguchi, M., Yang, S. T., and Zimmerman, G. B.

Published
2024
Full Text
View/download PDF

2. Experiments conducted in the burning plasma regime with inertial fusion implosions

Author

Ross, J. S., Ralph, J. E., Zylstra, A. B., Kritcher, A. L., Robey, H. F., Young, C. V., Hurricane, O. A., Callahan, D. A., Baker, K. L., Casey, D. T., Doeppner, T., Divol, L., Hohenberger, M., Pape, S. Le, Pak, A., Patel, P. K., Tommasini, R., Ali, S. J., Amendt, P. A., Atherton, L. J., Bachmann, B., Bailey, D., Benedetti, L. R., Hopkins, L. Berzak, Betti, R., Bhandarkar, S. D., Bionta, R. M., Birge, N. W., Bond, E. J., Bradley, D. K., Braun, T., Briggs, T. M., Bruhn, M. W., Celliers, P. M., Chang, B., Chapman, T., Chen, H., Choate, C., Christopherson, A. R., Clark, D. S., Crippen, J. W., Dewald, E. L., Dittrich, T. R., Edwards, M. J., Farmer, W. A., Field, J. E., Fittinghoff, D., Frenje, J., Gaffney, J., Johnson, M. Gatu, Glenzer, S. H., Grim, G. P., Haan, S., Hahn, K. D., Hall, G. N., Hammel, B. A., Harte, J., Hartouni, E., Heebner, J. E., Hernandez, V. J., Herrmann, H., Herrmann, M. C., Hinkel, D. E., Ho, D. D., Holder, J. P., Hsing, W. W., Huang, H., Humbird, K. D., Izumi, N., Jarrott, L. C., Jeet, J., Jones, O., Kerbel, G. D., Kerr, S. M., Khan, S. F., Kilkenny, J., Kim, Y., Kleinrath, H. Geppert, Kleinrath, V. Geppert, Kong, C., Koning, J. M., Kroll, J. J., Landen, O. L., Langer, S., Larson, D., Lemos, N. C., Lindl, J. D., Ma, T., MacDonald, M. J., MacGowan, B. J., Mackinnon, A. J., MacLaren, S. A., MacPhee, A. G., Marinak, M. M., Mariscal, D. A., Marley, E. V., Masse, L., Meaney, K., Meezan, N. B., Michel, P. A., Millot, M., Milovich, J. L., Moody, J. D., Moore, A. S., Morton, J. W., Murphy, T., Newman, K., Di Nicola, J. -M. G., Nikroo, A., Nora, R., Patel, M. V., Pelz, L. J., Peterson, J. L., Ping, Y., Pollock, B. B., Ratledge, M., Rice, N. G., Rinderknecht, H., Rosen, M., Rubery, M. S., Salmonson, J. D., Sater, J., Schiaffino, S., Schlossberg, D. J., Schneider, M. B., Schroeder, C. R., Scott, H. A., Sepke, S. M., Sequoia, K., Sherlock, M. W., Shin, S., Smalyuk, V. A., Spears, B. K., Springer, P. T., Stadermann, M., Stoupin, S., Strozzi, D. J., Suter, L. J., Thomas, C. A., Town, R. P. J., Tubman, E. R., Volegov, P. L., Weber, C. R., Widmann, K., Wild, C., Wilde, C. H., Van Wonterghem, B. M., Woods, D. T., Woodworth, B. N., Yamaguchi, M., Yang, S. T., and Zimmerman, G. B.

Subjects
Physics - Plasma Physics, High Energy Physics - Experiment
Abstract

An experimental program is currently underway at the National Ignition Facility (NIF) to compress deuterium and tritium (DT) fuel to densities and temperatures sufficient to achieve fusion and energy gain. The primary approach being investigated is indirect drive inertial confinement fusion (ICF), where a high-Z radiation cavity (a hohlraum) is heated by lasers, converting the incident energy into x-ray radiation which in turn drives the DT fuel filled capsule causing it to implode. Previous experiments reported DT fuel gain exceeding unity [O.A. Hurricane et al., Nature 506, 343 (2014)] and then exceeding the kinetic energy of the imploding fuel [S. Le Pape et al., Phys. Rev. Lett. 120, 245003 (2018)]. We report on recent experiments that have achieved record fusion neutron yields on NIF, greater than 100 kJ with momentary fusion powers exceeding 1PW, and have for the first time entered the burning plasma regime where fusion alpha-heating of the fuel exceeds the energy delivered to the fuel via compression. This was accomplished by increasing the size of the high-density carbon (HDC) capsule, increasing energy coupling, while controlling symmetry and implosion design parameters. Two tactics were successful in controlling the radiation flux symmetry and therefore the implosion symmetry: transferring energy between laser cones via plasma waves, and changing the shape of the hohlraum. In conducting these experiments, we controlled for known sources of degradation. Herein we show how these experiments were performed to produce record performance, and demonstrate the data fidelity leading us to conclude that these shots have entered the burning plasma regime.

Published
2021

3. Burning plasma achieved in inertial fusion

Author

Zylstra, A. B., Hurricane, O. A., Callahan, D. A., Kritcher, A. L., Ralph, J. E., Robey, H. F., Ross, J. S., Young, C. V., Baker, K. L., Casey, D. T., Döppner, T., Divol, L., Hohenberger, M., Le Pape, S., Pak, A., Patel, P. K., Tommasini, R., Ali, S. J., Amendt, P. A., Atherton, L. J., Bachmann, B., Bailey, D., Benedetti, L. R., Berzak Hopkins, L., Betti, R., Bhandarkar, S. D., Biener, J., Bionta, R. M., Birge, N. W., Bond, E. J., Bradley, D. K., Braun, T., Briggs, T. M., Bruhn, M. W., Celliers, P. M., Chang, B., Chapman, T., Chen, H., Choate, C., Christopherson, A. R., Clark, D. S., Crippen, J. W., Dewald, E. L., Dittrich, T. R., Edwards, M. J., Farmer, W. A., Field, J. E., Fittinghoff, D., Frenje, J., Gaffney, J., Gatu Johnson, M., Glenzer, S. H., Grim, G. P., Haan, S., Hahn, K. D., Hall, G. N., Hammel, B. A., Harte, J., Hartouni, E., Heebner, J. E., Hernandez, V. J., Herrmann, H., Herrmann, M. C., Hinkel, D. E., Ho, D. D., Holder, J. P., Hsing, W. W., Huang, H., Humbird, K. D., Izumi, N., Jarrott, L. C., Jeet, J., Jones, O., Kerbel, G. D., Kerr, S. M., Khan, S. F., Kilkenny, J., Kim, Y., Geppert Kleinrath, H., Geppert Kleinrath, V., Kong, C., Koning, J. M., Kroll, J. J., Kruse, M. K. G., Kustowski, B., Landen, O. L., Langer, S., Larson, D., Lemos, N. C., Lindl, J. D., Ma, T., MacDonald, M. J., MacGowan, B. J., Mackinnon, A. J., MacLaren, S. A., MacPhee, A. G., Marinak, M. M., Mariscal, D. A., Marley, E. V., Masse, L., Meaney, K., Meezan, N. B., Michel, P. A., Millot, M., Milovich, J. L., Moody, J. D., Moore, A. S., Morton, J. W., Murphy, T., Newman, K., Di Nicola, J.-M. G., Nikroo, A., Nora, R., Patel, M. V., Pelz, L. J., Peterson, J. L., Ping, Y., Pollock, B. B., Ratledge, M., Rice, N. G., Rinderknecht, H., Rosen, M., Rubery, M. S., Salmonson, J. D., Sater, J., Schiaffino, S., Schlossberg, D. J., Schneider, M. B., Schroeder, C. R., Scott, H. A., Sepke, S. M., Sequoia, K., Sherlock, M. W., Shin, S., Smalyuk, V. A., Spears, B. K., Springer, P. T., Stadermann, M., Stoupin, S., Strozzi, D. J., Suter, L. J., Thomas, C. A., Town, R. P. J., Tubman, E. R., Trosseille, C., Volegov, P. L., Weber, C. R., Widmann, K., Wild, C., Wilde, C. H., Van Wonterghem, B. M., Woods, D. T., Woodworth, B. N., Yamaguchi, M., Yang, S. T., and Zimmerman, G. B.

Published
2022
Full Text
View/download PDF

4. The first cryogenic DT layered, beryllium capsule implosion at the National Ignition Facility

Author

Wilson, D. C., Kline, J. L., Yi, S. A., Simakov, A. N., Kyrala, G. A., Olson, R. E., Perry, T. S., Merrill, F. E., Batha, S., Zylstra, A. B., Callahan, D. A., Cassata, W., Dewald, E. L., Haan, S. W., Hinkel, D. E., Hurricane, O. A., Izumi, N., Ma, T., MacPhee, A. G., Milovich, J. L., Ralph, J. E., Rygg, J. R., Schneider, M. B., Sepke, S., Strozzi, D. J., Tommasini, R., Yeamans, C., Rinderknecht, H. G., and Sio, B. H.

Subjects
Physics - Plasma Physics
Abstract

NIF experiments with Be capsules have followed a path of the highly successful "high-foot" CH capsules. Several keyhole and ConA targets preceeded a DT layered shot. In addition to backscatter subtraction, laser drive multipliers were needed to match observed X-ray drives. Those for the picket (0.95), trough (1.0) and second pulse (0.80) were determined by VISAR measurements. The time dependence of the Dante total x-ray flux and its fraction > 1.8 keV reflect the time dependence of the multipliers. A two step drive multiplier for the main pulse can match implosion times, but Dante measurements suggest the drive multiplier must increase late in time. With a single set of time dependent, multi-level multipliers the Dante data are well matched. These same third pulse drive multipliers also match the implosion times and Dante signals for two CH capsule DT. One discrepancy in the calculations is the X-ray flux in the picket. Calculations over-estimate the flux > 1.8 keV by a factor of ~100, while getting the total flux correctly. These harder X-rays cause an expansion of the Be/fuel interface of 2-3 km/s before the arrival of the first shock. VISAR measurements show only 0.2 to 0.3 km/s. The X-ray drive on the DT Be capsule was further degraded by a random decrease of 9% in the total picket flux. This small change caused the capsule fuel to change from an adiabat of 1.8 to 2.3 by mistiming of the first and second shocks. With this shock tuning and adjustments to the calculation, the first NIF Be capsule implosion achieved 29% of calculated yield, comparable to the CH DT capsules of 68% and 21%. Inclusion of a large M1 asymmetry in the DT ice layer and mixing from instability growth may help explain this final degradation. In summary when driven similarly the Be capsules performed like CH capsules. Performance degradation for both seems to be dominated by drive and capsule asymmetries.

Published
2017

5. Increased compression in HDC-based ablator implosions using modified drive profile

Author

Tommasini, R., primary, Casey, D. T., additional, Clark, D., additional, Do, A., additional, Baker, K. L., additional, Landen, O. L., additional, Smalyuk, V. A., additional, Weber, C., additional, Bachmann, B., additional, Hartouni, E., additional, Kerr, S., additional, Krauland, C., additional, Marley, E. V., additional, Millot, M., additional, Milovich, J., additional, Nora, R. C., additional, Pak, A. E., additional, Schlossberg, D., additional, Woodworth, B., additional, Briggs, T. M., additional, Holunga, D. M., additional, Nikroo, A., additional, and Stadermann, M., additional

Published
2023
Full Text
View/download PDF

6. Publisher Correction: Burning plasma achieved in inertial fusion

Author

Zylstra, A. B., Hurricane, O. A., Callahan, D. A., Kritcher, A. L., Ralph, J. E., Robey, H. F., Ross, J. S., Young, C. V., Baker, K. L., Casey, D. T., Döppner, T., Divol, L., Hohenberger, M., Le Pape, S., Pak, A., Patel, P. K., Tommasini, R., Ali, S. J., Amendt, P. A., Atherton, L. J., Bachmann, B., Bailey, D., Benedetti, L. R., Berzak Hopkins, L., Betti, R., Bhandarkar, S. D., Biener, J., Bionta, R. M., Birge, N. W., Bond, E. J., Bradley, D. K., Braun, T., Briggs, T. M., Bruhn, M. W., Celliers, P. M., Chang, B., Chapman, T., Chen, H., Choate, C., Christopherson, A. R., Clark, D. S., Crippen, J. W., Dewald, E. L., Dittrich, T. R., Edwards, M. J., Farmer, W. A., Field, J. E., Fittinghoff, D., Frenje, J., Gaffney, J., Gatu Johnson, M., Glenzer, S. H., Grim, G. P., Haan, S., Hahn, K. D., Hall, G. N., Hammel, B. A., Harte, J., Hartouni, E., Heebner, J. E., Hernandez, V. J., Herrmann, H., Herrmann, M. C., Hinkel, D. E., Ho, D. D., Holder, J. P., Hsing, W. W., Huang, H., Humbird, K. D., Izumi, N., Jarrott, L. C., Jeet, J., Jones, O., Kerbel, G. D., Kerr, S. M., Khan, S. F., Kilkenny, J., Kim, Y., Geppert Kleinrath, H., Geppert Kleinrath, V., Kong, C., Koning, J. M., Kroll, J. J., Kruse, M. K. G., Kustowski, B., Landen, O. L., Langer, S., Larson, D., Lemos, N. C., Lindl, J. D., Ma, T., MacDonald, M. J., MacGowan, B. J., Mackinnon, A. J., MacLaren, S. A., MacPhee, A. G., Marinak, M. M., Mariscal, D. A., Marley, E. V., Masse, L., Meaney, K., Meezan, N. B., Michel, P. A., Millot, M., Milovich, J. L., Moody, J. D., Moore, A. S., Morton, J. W., Murphy, T., Newman, K., Di Nicola, J.-M. G., Nikroo, A., Nora, R., Patel, M. V., Pelz, L. J., Peterson, J. L., Ping, Y., Pollock, B. B., Ratledge, M., Rice, N. G., Rinderknecht, H., Rosen, M., Rubery, M. S., Salmonson, J. D., Sater, J., Schiaffino, S., Schlossberg, D. J., Schneider, M. B., Schroeder, C. R., Scott, H. A., Sepke, S. M., Sequoia, K., Sherlock, M. W., Shin, S., Smalyuk, V. A., Spears, B. K., Springer, P. T., Stadermann, M., Stoupin, S., Strozzi, D. J., Suter, L. J., Thomas, C. A., Town, R. P. J., Tubman, E. R., Trosseille, C., Volegov, P. L., Weber, C. R., Widmann, K., Wild, C., Wilde, C. H., Van Wonterghem, B. M., Woods, D. T., Woodworth, B. N., Yamaguchi, M., Yang, S. T., and Zimmerman, G. B.

Published
2022
Full Text
View/download PDF

7. Fuel gain exceeding unity in an inertially confined fusion implosion

Author

Hurricane, O. A., Callahan, D. A., Casey, D. T., Celliers, P. M., Cerjan, C., Dewald, E. L., Dittrich, T. R., Döppner, T., Hinkel, D. E., Hopkins, Berzak L.F., Kline, J. L., Le Pape, S., Ma, T., MacPhee, A. G., Milovich, J. L., Pak, A., Park, H.-S., Patel, P. K., Remington, B. A., Salmonson, J. D., Springer, P. T., and Tommasini, R.

Published
2014
Full Text
View/download PDF

8. Does aid reduce poverty?

Author

Milovich, J

Abstract

Fifty years of literature on aid effectiveness has so far proven inconclusive. Two main challenges still require some attention. The first is to properly identify the causal effect of aid on poverty alleviation. To address it, I exploit differences in the number of years countries have been temporary members of the United Nations Security Council as an instrument for the average amount of economic aid disbursed by the United States. The second is to obtain reliable data on poverty, which I confront by using multidimensional poverty data from the Oxford Poverty and Human Development Initiative (OPHI). For a sample of 64 developing countries, I estimate a significant relationship between higher amounts of aid received during the period 1946–1999 and lower Multidimensional Poverty Index (MPI) between 2000 and 2014. On the contrary, the relationship does not seem to be significant when poverty is measured from an income perspective. Alternative measures of poverty could help improve the understanding of the relationship between development aid and poverty alleviation and might also contribute to improved targeting for aid disbursements.

Published
2019

9. Ignition tuning for the National Ignition Campaign

Author

Landen O., Edwards J., Haan S.W., Lindl J.D., Boehly T.R., Bradley D.K., Callahan D.A., Celliers P.M., Dewald E.L., Dixit S., Doeppner T., Eggert J., Farley D., Frenje J.A., Glenn S., Glenzer S.H., Hamza A., Hammel B.A., Haynam C., LaFortune K., Hicks D.G., Hoffman N., Izumi N., Jones O.S., Kilkenny J.D., Kline J.L., Kyrala G.A., Mackinnon A.J., Milovich J., Moody J., Meezan N., Michel P., Munro D.H., Olson R.E., Ralph J., Robey H.F., Nikroo A., Regan S.P., Spears B.K., Suter L.J., Thomas C.A., Town R., Wilson D.C., MacGowan B.J., Atherton L.J., and Moses E.I.

Subjects
Physics, QC1-999
Abstract

The overall goal of the indirect-drive inertial confinement fusion [1] tuning campaigns [2] is to maximize the probability of ignition by experimentally correcting for likely residual uncertainties in the implosion and hohlraum physics [3] used in our radiation-hydrodynamic computational models, and by checking for and resolving unexpected shot-to-shot variability in performance [4]. This has been started successfully using a variety of surrogate capsules that set key laser, hohlraum and capsule parameters to maximize ignition capsule implosion velocity, while minimizing fuel adiabat, core shape asymmetry and ablator-fuel mix.

Published
2013
Full Text
View/download PDF

10. Towards an integrated model of the NIC layered implosions

Author

Jones O., Callahan D., Cerjan C., Clark D., Edwards M.J., Glenzer S., Marinak M., Meezan N., Milovich J., Olson R., Patel M., Robey H., Sepke S., Spears B., Springer P., Weber S., and Wilson D.

Subjects
Physics, QC1-999
Abstract

A detailed simulation-based model of the June 2011 National Ignition Campaign (NIC) cryogenic DT experiments is presented. The model is based on integrated hohlraum-capsule simulations that utilize the best available models for the hohlraum wall, ablator, and DT equations of state and opacities. The calculated radiation drive was adjusted by changing the input laser power to match the experimentally measured shock speeds, shock merger times, peak implosion velocity, and bangtime. The crossbeam energy transfer model was tuned to match the measured time-dependent symmetry. Mid-mode mix was included by directly modeling the ablator and ice surface perturbations up to mode 60. Simulated experimental values were extracted from the simulation and compared against the experiment. The model adjustments brought much of the simulated data into closer agreement with the experiment, with the notable exception of the measured yields, which were 15–40% of the calculated yields.

Published
2013
Full Text
View/download PDF

11. NIF Rugby High Foot Campaign from the design side

Author

Leidinger, J-P, primary, Callahan, D A, additional, Berzak-Hopkins, L F, additional, Ralph, J E, additional, Amendt, P, additional, Hinkel, D E, additional, Michel, P, additional, Moody, J D, additional, Ross, J S, additional, Rygg, J R, additional, Celliers, P, additional, Clouët, J-F, additional, Dewald, E L, additional, Kaiser, P, additional, Khan, S, additional, Kritcher, A L, additional, Liberatore, S, additional, Marion, D, additional, Masson-Laborde, P-E, additional, Milovich, J L, additional, Morice, O, additional, Pak, A E, additional, Poujade, O, additional, Strozzi, D, additional, and Hurricane, O A, additional

Published
2016
Full Text
View/download PDF

13. Progress in detailed modelling of low foot and high foot implosion experiments on the National Ignition Facility

Author

Clark, D S, primary, Weber, C R, additional, Eder, D C, additional, Haan, S W, additional, Hammel, B A, additional, Hinkel, D E, additional, Jones, O S, additional, Kritcher, A L, additional, Marinak, M M, additional, Milovich, J L, additional, Patel, P K, additional, Robey, H F, additional, Salmonson, J D, additional, and Sepke, S M, additional

Published
2016
Full Text
View/download PDF

14. Indirect-drive ablative Richtmyer Meshkov node scaling

Author

Landen, O L, primary, Baker, K L, additional, Clark, D S, additional, Goncharov, V N, additional, Hammel, B A, additional, Ho, D D, additional, Hurricane, O A, additional, Lindl, J D, additional, Loomis, E N, additional, Masse, L, additional, Mauche, C, additional, Milovich, J L, additional, Peterson, J L, additional, Smalyuk, V A, additional, Yi, S A, additional, Velikovich, A L, additional, and Weber, C., additional

Published
2016
Full Text
View/download PDF

15. Performance of indirectly driven capsule implosions on NIF using adiabat-shaping

Author

Robey, H F, primary, Smalyuk, V A, additional, Milovich, J L, additional, Döppner, T, additional, Casey, D T, additional, Baker, K L, additional, Peterson, J L, additional, Bachmann, B, additional, Hopkins, L F Berzak, additional, Bond, E, additional, Caggiano, J A, additional, Callahan, D A, additional, Celliers, P M, additional, Cerjan, C, additional, Clark, D S, additional, Dixit, S N, additional, Edwards, M J, additional, Gharibyan, N, additional, Haan, S W, additional, Hammel, B A, additional, Hamza, A V, additional, Hatarik, R, additional, Hurricane, O A, additional, Jancaitis, K S, additional, Jones, O S, additional, Kerbel, G D, additional, Kroll, J J, additional, Lafortune, K N, additional, Landen, O L, additional, Ma, T, additional, Marinak, M M, additional, MacGowan, B J, additional, MacPhee, A G, additional, Pak, A, additional, Patel, M, additional, Patel, P K, additional, Perkins, L J, additional, Sayre, D B, additional, Sepke, S M, additional, Spears, B K, additional, Tommasini, R, additional, Weber, C R, additional, Widmayer, C C, additional, Yeamans, C, additional, Giraldez, E, additional, Hoover, D, additional, Nikroo, A, additional, Hohenberger, M, additional, and Johnson, M Gatu, additional

Published
2016
Full Text
View/download PDF

17. X-ray drive of beryllium capsule implosions at the National Ignition Facility

Author

Wilson, D C, primary, Yi, S A, additional, Simakov, A N, additional, Kline, J L, additional, Kyrala, G A, additional, Dewald, E L, additional, Tommasini, R, additional, Ralph, J E, additional, Olson, R E, additional, Strozzi, D J, additional, Celliers, P M, additional, Schneider, M B, additional, MacPhee, A G, additional, Zylstra, A B, additional, Callahan, D A, additional, Hurricane, O A, additional, Milovich, J L, additional, Hinkel, D E, additional, Rygg, J R, additional, Rinderknecht, H G, additional, Sio, H, additional, Perry, T S, additional, and Batha, S, additional

Published
2016
Full Text
View/download PDF

18. Simulations of symcap and layered NIF experiments with top/bottom laser asymmetry to impose P1 drive on capsules

Author

Eder, D, primary, Spears, B, additional, Casey, D, additional, Pak, A, additional, Ma, T, additional, Izumi, N, additional, Pollock, B, additional, Weber, C, additional, Kritcher, A, additional, Jones, O, additional, Milovich, J, additional, Town, R, additional, Robey, H, additional, Hinkel, D, additional, Callahan, D, additional, Hatchett, S, additional, Knauer, J, additional, Yeamans, C, additional, Bleuel, D, additional, Nagel, S, additional, Hatarik, R, additional, Khan, S, additional, Sayre, D, additional, Caggiano, J, additional, Grim, G, additional, Eckart, M, additional, Fittinghoff, D, additional, Merrill, F, additional, and Bradley, D, additional

Published
2016
Full Text
View/download PDF

19. Towards a more universal understanding of radiation drive in gas-filled hohlraums

Author

Jones, O S, primary, Thomas, C A, additional, Amendt, P A, additional, Hall, G N, additional, Izumi, N, additional, Barrios Garcia, M A, additional, Berzak Hopkins, L F, additional, Chen, H, additional, Dewald, E L, additional, Hinkel, D E, additional, Kritcher, A L, additional, Marinak, M M, additional, Meezan, N B, additional, Milovich, J L, additional, Moody, J D, additional, Moore, A S, additional, Patel, M V, additional, Ralph, J E, additional, Regan, S P, additional, Rosen, M D, additional, Schneider, M B, additional, Sepke, S M, additional, Strozzi, DJ, additional, and Turnbull, D P, additional

Published
2016
Full Text
View/download PDF

21. A new symmetry model for hohlraum-driven capsule implosion experiments on the NIF

Author

Jones, O., primary, Rygg, R., additional, Tomasini, R., additional, Eder, D., additional, Kritcher, A., additional, Milovich, J., additional, Peterson, L., additional, Thomas, C., additional, Barrios, M., additional, Benedetti, R., additional, Doeppner, T., additional, Ma, T., additional, Nagel, S., additional, Pak, A., additional, Field, J., additional, Izumi, N., additional, Glenn, S., additional, Town, R., additional, and Bradley, D., additional

Published
2016
Full Text
View/download PDF

23. Erratum: Corrigendum: Fuel gain exceeding unity in an inertially confined fusion implosion

Author

Hurricane, O. A., primary, Callahan, D. A., additional, Casey, D. T., additional, Celliers, P. M., additional, Cerjan, C., additional, Dewald, E. L., additional, Dittrich, T. R., additional, Döppner, T., additional, Hinkel, D. E., additional, Hopkins, L. F. Berzak, additional, Kline, J. L., additional, LePape, S., additional, Ma, T., additional, MacPhee, A. G., additional, Milovich, J. L., additional, Pak, A., additional, Park, H.-S., additional, Patel, P. K., additional, Remington, B. A., additional, Salmonson, J. D., additional, Springer, P. T., additional, and Tommasini, R., additional

Published
2014
Full Text
View/download PDF

24. Model sensitivity in the effect of Antarctic sea ice and stratification on atmospheric pCO2

Author

Archer, D., Martin, P., Milovich, J., Brovkin, V., https://orcid.org/0000-0001-6420-3198, Plattner, K., and Ashendel, C.

Subjects
530 Physics
Abstract

Several recent papers have demonstrated a decrease in atmospheric pCO(2) resulting from barriers to communication between the deep sea and the atmosphere in the Southern Ocean. Stephens and Keeling [2000] decreased pCO(2) by increasing Antarctic sea ice in a seven-box model of the world ocean, and Toggweiler [1999] showed a similar response to Southern Ocean stratification. In box models the pCO(2) of the atmosphere is controlled by the region of the surface ocean that fills the deep sea [Archer et al., 2000a]. By severing the Southern Ocean link between the deep sea and the atmosphere, atmospheric pCO(2) in these models is controlled elsewhere and typically declines, although the models range widely in their responses. "Continuum models,'' such as three-dimensional (3-D) and 2-D general circulation models, control pCO(2) in a more distributed way and do not exhibit box model sensitivity to high-latitude sea ice or presumably stratification. There is still uncertainty about the high-latitude sensitivity of the real ocean. Until these model sensitivities can be resolved, glacial pCO(2) hypotheses and interpretations based on Southern Ocean barrier mechanisms (see above mentioned references plus Elderfield and Rickaby [2000], Francois et al. [1998], Gildor and Tziperman [2001], Sigman and Boyle [2000], and Watson et al. [2000]) are walking on thin ice.

Published
2003

25. Reproducibility of hohlraum-driven implosion symmetry on the National Ignition Facility.

Author

Kyrala, G. A., Bradley, D. K., Callahan, D. A., Dixit, S. N., Edwards, M. J., Glenn, S. M., Glenzer, S. H., Izumi, N., Jones, O. S., Kline, J. L., Landen, O. L., Ma, T., Milovich, J. L., Meezan, N. B., Spears, B. K., Town, R. P. J., Weber, S., Benedetti, R., Döppner, T., and Ralph, J.

Subjects
CRYOGENICS, ABLATIVE materials, HYDRODYNAMICS, SHAPE measurement, LASERS
Abstract

Indirectly driven Symcap capsules are used at the NIF to obtain information about ignition capsule implosion performance, in particular shape. Symcaps replace the cryogenic fuel layer with an equivalent ablator mass and can be similarly diagnosed. Symcaps are good symmetry surrogates to an ignition capsule after the peak of the drive, radiation-hydrodynamics simulations predict that doping of the symcaps vary the behavior of the implosion. We compare the equatorial shapes of a symcap doped with Si or Ge, as well as examine the reproducibility of the shape measurement using two symcaps with the same hohlraum and laser conditions. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
View/download PDF

26. Shock timing on the National Ignition Facility: The first precision tuning series.

Author

Robey, H. F., Celliers, P. M., Kline, J. L., Mackinnon, A. J., Boehly, T. R., Landen, O. L., Eggert, J. H., Hicks, D., Le Pape, S., Farley, D. R., Bowers, M. W., Krauter, K. G., Munro, D. H., Jones, O. S., Milovich, J. L., Clark, D., Spears, B. K., Town, R. P. J., Haan, S. W., and Dixit, S.

Subjects
SHOCK waves, ADIABATIC flow, CRYOGENICS, DEUTERIUM, AERODYNAMICS
Abstract

Ignition implosions on the National Ignition Facility (NIF) [Lindl et al., Phys. Plasmas 11, 339 (2004)] are driven with a very carefully tailored sequence of four shock waves that must be timed to very high precision in order to keep the fuel on a low adiabat. The first series of precision tuning experiments on NIF have been performed. These experiments use optical diagnostics to directly measure the strength and timing of all four shocks inside the hohlraum-driven, cryogenic deuterium-filled capsule interior. The results of these experiments are presented demonstrating a significant decrease in the fuel adiabat over previously un-tuned implosions. The impact of the improved adiabat on fuel compression is confirmed in related deuterium-tritium (DT) layered capsule implosions by measurement of fuel areal density (ρR), which show the highest fuel compression (ρR ~ 1.0 g/cm²) measured to date. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
View/download PDF

27. 3D Simulations of the NIF indirect drive ignition target design

Author

Jones, O S, primary, Milovich, J L, additional, Callahan, D A, additional, Edwards, M J, additional, Landen, O L, additional, Salmonson, J D, additional, Clark, D S, additional, Haan, S W, additional, Marinak, M M, additional, Patel, M V, additional, Langer, S H, additional, Sepke, S M, additional, Springer, P T, additional, and Hatchett, S P, additional

Published
2010
Full Text
View/download PDF

28. Solution of the Nonlinear Poisson–Boltzmann Equation Using Pseudo-transient Continuation and the Finite Element Method

Author

Shestakov, A. I., Milovich, J. L., and Noy, A.

Subjects
*FINITE element method, *GRIDS (Typographic design)
Abstract

The nonlinear Poisson–Boltzmann (PB) equation is solved using Newton–Krylov iterations coupled with pseudo-transient continuation. The PB potential is used to compute the electrostatic energy and evaluate the force on a user-specified contour. The PB solver is embedded in a existing, 3D, massively parallel, unstructured-grid, finite element code. Either Dirichlet or mixed boundary conditions are allowed. The latter specifies surface charges, approximates far-field conditions, or linearizes conditions “regulating” the surface charge. Stability and robustness are proved using results for backward Euler differencing of diffusion equations. Potentials and energies of charged spheres and plates are computed and results compared to analysis. An approximation to the potential of the nonlinear, spherical charge is derived by combining two analytic formulæ. The potential and force due to a conical probe interacting with a flat plate are computed for two types of boundary conditions: constant potential and constant charge. The second case is compared with direct force measurements by chemical force microscopy. The problem is highly nonlinear—surface potentials of the linear and nonlinear PB equations differ by over an order of magnitude. Comparison of the simulated and experimentally measured forces shows that approximately half of the surface carboxylic acid groups, of density 1/(0.2 nm2), ionize in the electrolyte implying surface charges of 0.4 C/m2, surface potentials of 0.27 V, and a force of 0.6 nN when the probe and plate are 8.7 nm apart. [Copyright &y& Elsevier]

Published
2002
Full Text
View/download PDF

31. Corrigendum: Fuel gain exceeding unity in an inertially confined fusion implosion.

Author

Hurricane, O. A., Callahan, D. A., Casey, D. T., Celliers, P. M., Cerjan, C., Dewald, E. L., Dittrich, T. R., Döppner, T., Hinkel, D. E., Hopkins, L. F. Berzak, Kline, J. L., LePape, S., Ma, T., MacPhee, A. G., Milovich, J. L., Pak, A., Park, H.-S., Patel, P. K., Remington, B. A., and Salmonson, J. D.

Subjects
FUSION reactor fuel, NUCLEAR fuels
Abstract

A correction to the article "Fuel gain exceeding unity in an inertially confined fusion implosion" that was published in 2014 issue is presented.

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results