Effects of radiation on direct-drive laser fusion targets

D. G. Colombant; S. E. Bodner; A. J. Schmitt; M. Klapisch; J. H. Gardner; Y. Aglitskiy; A. V. Deniz; S. P. Obenschain; C. J. Pawley; V. Serlin; J. L. Weaver

doi:10.1063/1.874026

Effects of radiation on direct-drive laser fusion targets

D. G. Colombant^*
, S. E. Bodner
, A. J. Schmitt
, M. Klapisch
, J. H. Gardner
, Y. Aglitskiy
, A. V. Deniz
, S. P. Obenschain
, C. J. Pawley
, V. Serlin
, J. L. Weaver

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

36 Scopus citations

Abstract

The role played by radiation in the radiation-preheated direct-drive laser fusion target design is discussed. The soft x-rays emitted during the foot of the laser pulse - at a few 10¹²W/cm² - preheat the low-opacity foam ablator which helps to control the Rayleigh-Taylor instability. The foam opacity is, however, thick enough to stop that radiation, keeping the fuel on a low adiabat. Radiation effects are also important in the blow-off corona of the target because they establish a long scale-length plasma. This may help to shield the ablation region from the nonuniformities in the laser absorption.

Original language	English
Pages (from-to)	2046-2054
Number of pages	9
Journal	Physics of Plasmas
Volume	7
Issue number	5 II
DOIs	https://doi.org/10.1063/1.874026
State	Published - May 2000
Externally published	Yes
Event	41st Annual Meeting of the Division of Plasma Physics of the Ameircan Physical Society - Seattle, WA, United States Duration: 15 Nov 1999 → 19 Nov 1999

Access to Document

10.1063/1.874026

Cite this

@article{86d83e752ca247ea9332adb121e49238,

title = "Effects of radiation on direct-drive laser fusion targets",

abstract = "The role played by radiation in the radiation-preheated direct-drive laser fusion target design is discussed. The soft x-rays emitted during the foot of the laser pulse - at a few 1012W/cm2 - preheat the low-opacity foam ablator which helps to control the Rayleigh-Taylor instability. The foam opacity is, however, thick enough to stop that radiation, keeping the fuel on a low adiabat. Radiation effects are also important in the blow-off corona of the target because they establish a long scale-length plasma. This may help to shield the ablation region from the nonuniformities in the laser absorption.",

author = "Colombant, \{D. G.\} and Bodner, \{S. E.\} and Schmitt, \{A. J.\} and M. Klapisch and Gardner, \{J. H.\} and Y. Aglitskiy and Deniz, \{A. V.\} and Obenschain, \{S. P.\} and Pawley, \{C. J.\} and V. Serlin and Weaver, \{J. L.\}",

year = "2000",

month = may,

doi = "10.1063/1.874026",

language = "אנגלית",

volume = "7",

pages = "2046--2054",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "5 II",

note = "41st Annual Meeting of the Division of Plasma Physics of the Ameircan Physical Society ; Conference date: 15-11-1999 Through 19-11-1999",

}

TY - JOUR

T1 - Effects of radiation on direct-drive laser fusion targets

AU - Colombant, D. G.

AU - Bodner, S. E.

AU - Schmitt, A. J.

AU - Klapisch, M.

AU - Gardner, J. H.

AU - Aglitskiy, Y.

AU - Deniz, A. V.

AU - Obenschain, S. P.

AU - Pawley, C. J.

AU - Serlin, V.

AU - Weaver, J. L.

PY - 2000/5

Y1 - 2000/5

N2 - The role played by radiation in the radiation-preheated direct-drive laser fusion target design is discussed. The soft x-rays emitted during the foot of the laser pulse - at a few 1012W/cm2 - preheat the low-opacity foam ablator which helps to control the Rayleigh-Taylor instability. The foam opacity is, however, thick enough to stop that radiation, keeping the fuel on a low adiabat. Radiation effects are also important in the blow-off corona of the target because they establish a long scale-length plasma. This may help to shield the ablation region from the nonuniformities in the laser absorption.

AB - The role played by radiation in the radiation-preheated direct-drive laser fusion target design is discussed. The soft x-rays emitted during the foot of the laser pulse - at a few 1012W/cm2 - preheat the low-opacity foam ablator which helps to control the Rayleigh-Taylor instability. The foam opacity is, however, thick enough to stop that radiation, keeping the fuel on a low adiabat. Radiation effects are also important in the blow-off corona of the target because they establish a long scale-length plasma. This may help to shield the ablation region from the nonuniformities in the laser absorption.

UR - https://www.scopus.com/pages/publications/0001408545

U2 - 10.1063/1.874026

DO - 10.1063/1.874026

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.conferencearticle???

AN - SCOPUS:0001408545

SN - 1070-664X

VL - 7

SP - 2046

EP - 2054

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5 II

T2 - 41st Annual Meeting of the Division of Plasma Physics of the Ameircan Physical Society

Y2 - 15 November 1999 through 19 November 1999

ER -

Effects of radiation on direct-drive laser fusion targets

Abstract

Access to Document

Other files and links

Fingerprint

Cite this