The role of fast-electron preheating in low-adiabat cryogenic implosions on OMEGA

D. Shvarts; V. A. Smalyuk; R. Betti; J. A. Delettrez; D. H. Edgell; V. Yu Glebov; V. N. Goncharov; R. L. McCrory; P. W. McKenty; D. D. Meyerhofer; F. J. Marshall; P. B. Radha; S. P. Regan; T. C. Sangster; W. Seka; S. Skupsky; C. Stoeckl; B. Yaakobi; J. A. Frenje; C. K. Li; R. D. Petrasso; F. H. Sěguin

doi:10.1088/1742-6596/112/2/022005

The role of fast-electron preheating in low-adiabat cryogenic implosions on OMEGA

D. Shvarts, V. A. Smalyuk, R. Betti, J. A. Delettrez, D. H. Edgell, V. Yu Glebov, V. N. Goncharov, R. L. McCrory, P. W. McKenty, D. D. Meyerhofer, F. J. Marshall, P. B. Radha, S. P. Regan, T. C. Sangster, W. Seka, S. Skupsky, C. Stoeckl, B. Yaakobi, J. A. Frenje, C. K. LiR. D. Petrasso, F. H. Sěguin

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

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Abstract

The compression in direct-drive, low-adiabat spherical implosions was studied using cryogenic D₂ targets on the 60-beam, 351-nm OMEGA laser in the range of laser intensities from ∼3 × 10¹⁴ to ∼1.5 × 10¹⁵ W/cm². The neutron-burn - averaged areal densities decreased as the laser intensity increased. This decrease in areal density is highly correlated with the increased hard-x-ray signals, caused by hot electrons generated by the two-plasmon-decay instability. The areal-density reduction up to ∼2, observed in the experiments, requires a preheat energy of ∼60 J (∼0.3% of total laser energy), which is consistent with the estimated preheat levels inferred from the hard-x-ray signal levels. Mitigating the generation of fast-electrons results in high areal densities which are close to the 1D predictions.

Original language	English
Article number	022005
Journal	Journal of Physics: Conference Series
Volume	112
Issue number	Part 2
DOIs	https://doi.org/10.1088/1742-6596/112/2/022005
State	Published - 12 Jun 2008
Externally published	Yes
Event	5th International Conference on Inertial Fusion Sciences and Applications, IFSA 2007 - Kobe, Japan Duration: 9 Sep 2007 → 14 Sep 2007

ASJC Scopus subject areas

General Physics and Astronomy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1088/1742-6596/112/2/022005

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Shvarts, D., Smalyuk, V. A., Betti, R., Delettrez, J. A., Edgell, D. H., Glebov, V. Y., Goncharov, V. N., McCrory, R. L., McKenty, P. W., Meyerhofer, D. D., Marshall, F. J., Radha, P. B., Regan, S. P., Sangster, T. C., Seka, W., Skupsky, S., Stoeckl, C., Yaakobi, B., Frenje, J. A., ... Sěguin, F. H. (2008). The role of fast-electron preheating in low-adiabat cryogenic implosions on OMEGA. Journal of Physics: Conference Series, 112(Part 2), Article 022005. https://doi.org/10.1088/1742-6596/112/2/022005

@article{001e593760a34099b7c368faf6d39c72,

title = "The role of fast-electron preheating in low-adiabat cryogenic implosions on OMEGA",

abstract = "The compression in direct-drive, low-adiabat spherical implosions was studied using cryogenic D2 targets on the 60-beam, 351-nm OMEGA laser in the range of laser intensities from ∼3 × 1014 to ∼1.5 × 1015 W/cm2. The neutron-burn - averaged areal densities decreased as the laser intensity increased. This decrease in areal density is highly correlated with the increased hard-x-ray signals, caused by hot electrons generated by the two-plasmon-decay instability. The areal-density reduction up to ∼2, observed in the experiments, requires a preheat energy of ∼60 J (∼0.3% of total laser energy), which is consistent with the estimated preheat levels inferred from the hard-x-ray signal levels. Mitigating the generation of fast-electrons results in high areal densities which are close to the 1D predictions.",

author = "D. Shvarts and Smalyuk, {V. A.} and R. Betti and Delettrez, {J. A.} and Edgell, {D. H.} and Glebov, {V. Yu} and Goncharov, {V. N.} and McCrory, {R. L.} and McKenty, {P. W.} and Meyerhofer, {D. D.} and Marshall, {F. J.} and Radha, {P. B.} and Regan, {S. P.} and Sangster, {T. C.} and W. Seka and S. Skupsky and C. Stoeckl and B. Yaakobi and Frenje, {J. A.} and Li, {C. K.} and Petrasso, {R. D.} and S{\v e}guin, {F. H.}",

note = "Publisher Copyright: {\textcopyright} 2008 IOP Publishing Ltd.; 5th International Conference on Inertial Fusion Sciences and Applications, IFSA 2007 ; Conference date: 09-09-2007 Through 14-09-2007",

year = "2008",

month = jun,

day = "12",

doi = "10.1088/1742-6596/112/2/022005",

language = "English",

volume = "112",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

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Shvarts, D, Smalyuk, VA, Betti, R, Delettrez, JA, Edgell, DH, Glebov, VY, Goncharov, VN, McCrory, RL, McKenty, PW, Meyerhofer, DD, Marshall, FJ, Radha, PB, Regan, SP, Sangster, TC, Seka, W, Skupsky, S, Stoeckl, C, Yaakobi, B, Frenje, JA, Li, CK, Petrasso, RD & Sěguin, FH 2008, 'The role of fast-electron preheating in low-adiabat cryogenic implosions on OMEGA', Journal of Physics: Conference Series, vol. 112, no. Part 2, 022005. https://doi.org/10.1088/1742-6596/112/2/022005

TY - JOUR

T1 - The role of fast-electron preheating in low-adiabat cryogenic implosions on OMEGA

AU - Shvarts, D.

AU - Smalyuk, V. A.

AU - Betti, R.

AU - Delettrez, J. A.

AU - Edgell, D. H.

AU - Glebov, V. Yu

AU - Goncharov, V. N.

AU - McCrory, R. L.

AU - McKenty, P. W.

AU - Meyerhofer, D. D.

AU - Marshall, F. J.

AU - Radha, P. B.

AU - Regan, S. P.

AU - Sangster, T. C.

AU - Seka, W.

AU - Skupsky, S.

AU - Stoeckl, C.

AU - Yaakobi, B.

AU - Frenje, J. A.

AU - Li, C. K.

AU - Petrasso, R. D.

AU - Sěguin, F. H.

PY - 2008/6/12

Y1 - 2008/6/12

N2 - The compression in direct-drive, low-adiabat spherical implosions was studied using cryogenic D2 targets on the 60-beam, 351-nm OMEGA laser in the range of laser intensities from ∼3 × 1014 to ∼1.5 × 1015 W/cm2. The neutron-burn - averaged areal densities decreased as the laser intensity increased. This decrease in areal density is highly correlated with the increased hard-x-ray signals, caused by hot electrons generated by the two-plasmon-decay instability. The areal-density reduction up to ∼2, observed in the experiments, requires a preheat energy of ∼60 J (∼0.3% of total laser energy), which is consistent with the estimated preheat levels inferred from the hard-x-ray signal levels. Mitigating the generation of fast-electrons results in high areal densities which are close to the 1D predictions.

AB - The compression in direct-drive, low-adiabat spherical implosions was studied using cryogenic D2 targets on the 60-beam, 351-nm OMEGA laser in the range of laser intensities from ∼3 × 1014 to ∼1.5 × 1015 W/cm2. The neutron-burn - averaged areal densities decreased as the laser intensity increased. This decrease in areal density is highly correlated with the increased hard-x-ray signals, caused by hot electrons generated by the two-plasmon-decay instability. The areal-density reduction up to ∼2, observed in the experiments, requires a preheat energy of ∼60 J (∼0.3% of total laser energy), which is consistent with the estimated preheat levels inferred from the hard-x-ray signal levels. Mitigating the generation of fast-electrons results in high areal densities which are close to the 1D predictions.

UR - http://www.scopus.com/inward/record.url?scp=84996503725&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/112/2/022005

DO - 10.1088/1742-6596/112/2/022005

M3 - Conference article

AN - SCOPUS:84996503725

SN - 1742-6588

VL - 112

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - Part 2

M1 - 022005

T2 - 5th International Conference on Inertial Fusion Sciences and Applications, IFSA 2007

Y2 - 9 September 2007 through 14 September 2007

ER -

The role of fast-electron preheating in low-adiabat cryogenic implosions on OMEGA

Abstract

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