High e+/e- ratio dense pair creation with 1021 W.cm-2 laser irradiating solid targets

E. Liang; T. Clarke; A. Henderson; W. Fu; W. Lo; D. Taylor; P. Chaguine; S. Zhou; Y. Hua; X. Cen; X. Wang; J. Kao; H. Hasson; G. Dyer; K. Serratto; N. Riley; M. Donovan; T. Ditmire

doi:10.1038/srep13968

High e+/e- ratio dense pair creation with 10²¹ W.cm^-2 laser irradiating solid targets

E. Liang, T. Clarke, A. Henderson, W. Fu, W. Lo, D. Taylor, P. Chaguine, S. Zhou, Y. Hua, X. Cen, X. Wang, J. Kao, H. Hasson, G. Dyer, K. Serratto, N. Riley, M. Donovan, T. Ditmire

Chemistry and Physics

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Abstract

We report results of new pair creation experiments using ∼100 Joule pulses of the Texas Petawatt Laser to irradiate solid gold and platinum targets, with intensities up to ∼1.9 × 10²¹ W.cm^-2 and pulse durations as short as ∼130 fs. Positron to electron (e+/e-) ratios >15% were observed for many thick disk and rod targets, with the highest e+/e- ratio reaching ∼50% for a Pt rod. The inferred pair yield was ∼ few ×10¹⁰ with emerging pair density reaching ∼10¹⁵ /cm³ so that the pair skin depth becomes < pair jet transverse size. These results represent major milestones towards the goal of creating a significant quantity of dense pair-dominated plasmas with e+/e- approaching 100% and pair skin depth 蠐 pair plasma size, which will have wide-ranging applications to astrophysics and fundamental physics.

Original language	English (US)
Article number	13968
Journal	Scientific reports
Volume	5
DOIs	https://doi.org/10.1038/srep13968
State	Published - Sep 14 2015

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@article{930a5d9695fa4fccb9d2d0cac24e238a,

title = "High e+/e- ratio dense pair creation with 1021 W.cm-2 laser irradiating solid targets",

abstract = "We report results of new pair creation experiments using ∼100 Joule pulses of the Texas Petawatt Laser to irradiate solid gold and platinum targets, with intensities up to ∼1.9 × 1021 W.cm-2 and pulse durations as short as ∼130 fs. Positron to electron (e+/e-) ratios >15% were observed for many thick disk and rod targets, with the highest e+/e- ratio reaching ∼50% for a Pt rod. The inferred pair yield was ∼ few ×1010 with emerging pair density reaching ∼1015 /cm3 so that the pair skin depth becomes < pair jet transverse size. These results represent major milestones towards the goal of creating a significant quantity of dense pair-dominated plasmas with e+/e- approaching 100% and pair skin depth 蠐 pair plasma size, which will have wide-ranging applications to astrophysics and fundamental physics.",

author = "E. Liang and T. Clarke and A. Henderson and W. Fu and W. Lo and D. Taylor and P. Chaguine and S. Zhou and Y. Hua and X. Cen and X. Wang and J. Kao and H. Hasson and G. Dyer and K. Serratto and N. Riley and M. Donovan and T. Ditmire",

year = "2015",

month = sep,

day = "14",

doi = "10.1038/srep13968",

language = "English (US)",

volume = "5",

journal = "Scientific Reports",

issn = "2045-2322",

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T1 - High e+/e- ratio dense pair creation with 1021 W.cm-2 laser irradiating solid targets

AU - Liang, E.

AU - Clarke, T.

AU - Henderson, A.

AU - Fu, W.

AU - Lo, W.

AU - Taylor, D.

AU - Chaguine, P.

AU - Zhou, S.

AU - Hua, Y.

AU - Cen, X.

AU - Wang, X.

AU - Kao, J.

AU - Hasson, H.

AU - Dyer, G.

AU - Serratto, K.

AU - Riley, N.

AU - Donovan, M.

AU - Ditmire, T.

PY - 2015/9/14

Y1 - 2015/9/14

N2 - We report results of new pair creation experiments using ∼100 Joule pulses of the Texas Petawatt Laser to irradiate solid gold and platinum targets, with intensities up to ∼1.9 × 1021 W.cm-2 and pulse durations as short as ∼130 fs. Positron to electron (e+/e-) ratios >15% were observed for many thick disk and rod targets, with the highest e+/e- ratio reaching ∼50% for a Pt rod. The inferred pair yield was ∼ few ×1010 with emerging pair density reaching ∼1015 /cm3 so that the pair skin depth becomes < pair jet transverse size. These results represent major milestones towards the goal of creating a significant quantity of dense pair-dominated plasmas with e+/e- approaching 100% and pair skin depth 蠐 pair plasma size, which will have wide-ranging applications to astrophysics and fundamental physics.

AB - We report results of new pair creation experiments using ∼100 Joule pulses of the Texas Petawatt Laser to irradiate solid gold and platinum targets, with intensities up to ∼1.9 × 1021 W.cm-2 and pulse durations as short as ∼130 fs. Positron to electron (e+/e-) ratios >15% were observed for many thick disk and rod targets, with the highest e+/e- ratio reaching ∼50% for a Pt rod. The inferred pair yield was ∼ few ×1010 with emerging pair density reaching ∼1015 /cm3 so that the pair skin depth becomes < pair jet transverse size. These results represent major milestones towards the goal of creating a significant quantity of dense pair-dominated plasmas with e+/e- approaching 100% and pair skin depth 蠐 pair plasma size, which will have wide-ranging applications to astrophysics and fundamental physics.

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U2 - 10.1038/srep13968

DO - 10.1038/srep13968

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SN - 2045-2322

VL - 5

JO - Scientific Reports

JF - Scientific Reports

M1 - 13968

ER -

High e+/e- ratio dense pair creation with 10²¹ W.cm^-2 laser irradiating solid targets

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