Role of hot-electron preheating in the compression of direct-drive imploding targets with cryogenic D2 ablators

V. A. Smalyuk; D. Shvarts; R. Betti; J. A. Delettrez; D. H. Edgell; V. Yu Glebov; V. N. Goncharov; R. L. McCrory; D. D. Meyerhofer; 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. Séguin

doi:10.1103/PhysRevLett.100.185005

Role of hot-electron preheating in the compression of direct-drive imploding targets with cryogenic D2 ablators

V. A. Smalyuk, D. Shvarts, R. Betti, J. A. Delettrez, D. H. Edgell, V. Yu Glebov, V. N. Goncharov, R. L. McCrory, D. D. Meyerhofer, 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. Séguin

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Abstract

The compression of direct-drive, spherical implosions is studied using cryogenic D2 targets on the 60-beam, 351-nm OMEGA laser with intensities ranging from ∼3×1014 to ∼1×1015W/cm2. The hard-x-ray signal from hot electrons generated by laser-plasma instabilities increases with laser intensity, while the areal density decreases. Mitigating hot-electron production, by reducing the laser intensity to ∼3×1014W/cm2, results in areal density of the order of ∼140mg/cm2, in good agreement with 1D simulations. These results will be considered in future direct-drive-ignition designs.

Original language	English
Article number	185005
Journal	Physical Review Letters
Volume	100
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.100.185005
State	Published - 8 May 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (all)

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10.1103/PhysRevLett.100.185005

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Smalyuk, V. A., Shvarts, D., Betti, R., Delettrez, J. A., Edgell, D. H., Glebov, V. Y., Goncharov, V. N., McCrory, R. L., Meyerhofer, D. D., Radha, P. B., Regan, S. P., Sangster, T. C., Seka, W., Skupsky, S., Stoeckl, C., Yaakobi, B., Frenje, J. A., Li, C. K., Petrasso, R. D., & Séguin, F. H. (2008). Role of hot-electron preheating in the compression of direct-drive imploding targets with cryogenic D2 ablators. Physical Review Letters, 100(18), [185005]. https://doi.org/10.1103/PhysRevLett.100.185005

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title = "Role of hot-electron preheating in the compression of direct-drive imploding targets with cryogenic D2 ablators",

abstract = "The compression of direct-drive, spherical implosions is studied using cryogenic D2 targets on the 60-beam, 351-nm OMEGA laser with intensities ranging from ∼3×1014 to ∼1×1015W/cm2. The hard-x-ray signal from hot electrons generated by laser-plasma instabilities increases with laser intensity, while the areal density decreases. Mitigating hot-electron production, by reducing the laser intensity to ∼3×1014W/cm2, results in areal density of the order of ∼140mg/cm2, in good agreement with 1D simulations. These results will be considered in future direct-drive-ignition designs.",

author = "Smalyuk, {V. A.} and D. Shvarts and R. Betti and Delettrez, {J. A.} and Edgell, {D. H.} and Glebov, {V. Yu} and Goncharov, {V. N.} and McCrory, {R. L.} and Meyerhofer, {D. D.} 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{\'e}guin, {F. H.}",

year = "2008",

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doi = "10.1103/PhysRevLett.100.185005",

language = "English",

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Smalyuk, VA, Shvarts, D, Betti, R, Delettrez, JA, Edgell, DH, Glebov, VY, Goncharov, VN, McCrory, RL, Meyerhofer, DD, Radha, PB, Regan, SP, Sangster, TC, Seka, W, Skupsky, S, Stoeckl, C, Yaakobi, B, Frenje, JA, Li, CK, Petrasso, RD & Séguin, FH 2008, 'Role of hot-electron preheating in the compression of direct-drive imploding targets with cryogenic D2 ablators', Physical Review Letters, vol. 100, no. 18, 185005. https://doi.org/10.1103/PhysRevLett.100.185005

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T1 - Role of hot-electron preheating in the compression of direct-drive imploding targets with cryogenic D2 ablators

AU - Smalyuk, V. A.

AU - Shvarts, D.

AU - Betti, R.

AU - Delettrez, J. A.

AU - Edgell, D. H.

AU - Glebov, V. Yu

AU - Goncharov, V. N.

AU - McCrory, R. L.

AU - Meyerhofer, D. D.

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 - Séguin, F. H.

PY - 2008/5/8

Y1 - 2008/5/8

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AB - The compression of direct-drive, spherical implosions is studied using cryogenic D2 targets on the 60-beam, 351-nm OMEGA laser with intensities ranging from ∼3×1014 to ∼1×1015W/cm2. The hard-x-ray signal from hot electrons generated by laser-plasma instabilities increases with laser intensity, while the areal density decreases. Mitigating hot-electron production, by reducing the laser intensity to ∼3×1014W/cm2, results in areal density of the order of ∼140mg/cm2, in good agreement with 1D simulations. These results will be considered in future direct-drive-ignition designs.

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Role of hot-electron preheating in the compression of direct-drive imploding targets with cryogenic D2 ablators

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