Selective deuterium ion acceleration using the Vulcan petawatt laser

被引：19

作者：

Krygier, A. G. ^{[1
,2
]}

Morrison, J. T. ^{[3
]}

Kar, S. ^{[4
]}

Ahmed, H. ^{[4
]}

Alejo, A. ^{[4
]}

Clarke, R. ^{[5
]}

Fuchs, J. ^{[1
]}

Green, A. ^{[4
]}

Jung, D. ^{[4
]}

Kleinschmidt, A. ^{[6
]}

Najmudin, Z. ^{[7
]}

Nakamura, H. ^{[7
]}

Norreys, P. ^{[5
,8
]}

Notley, M. ^{[5
]}

Oliver, M. ^{[8
]}

Roth, M. ^{[6
]}

Vassura, L. ^{[1
]}

Zepf, M. ^{[4
,9
]}

Borghesi, M. ^{[4
,10
]}

Freeman, R. R. ^{[2
]}

机构：

[1] Ecole Polytech, Lab Utilisat Lasers Intenses, F-91128 Palasiseau, France

[2] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[3] Air Force Res Lab, Prop Syst Directorate, Wright Patterson AFB, OH 45433 USA

[4] Queens Univ Belfast, Sch Math & Phys, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland

[5] Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England

[6] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[7] Univ London Imperial Coll Sci Technol & Med, Dept Phys, Blackett Lab, John Adams Inst, London SW7 2AZ, England

[8] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[9] Helmholtz Inst Jena, D-07743 Jena, Germany

[10] ASCR, ELI Beamlines Project, Inst Phys, Prague 18221, Czech Republic

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 05期

基金：

英国工程与自然科学研究理事会; 美国能源部;

关键词：

GENERATION; DRIVEN;

D O I：

10.1063/1.4919618

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report on the successful demonstration of selective acceleration of deuterium ions by target-normal sheath acceleration (TNSA) with a high-energy petawatt laser. TNSA typically produces a multi-species ion beam that originates from the intrinsic hydrocarbon and water vapor contaminants on the target surface. Using the method first developed by Morrison et al. [Phys. Plasmas 19, 030707 (2012)], an ion beam with > 99% deuterium ions and peak energy 14 MeV/nucleon is produced with a 200 J, 700 fs, > 10(20)W/cm(2) laser pulse by cryogenically freezing heavy water (D2O) vapor onto the rear surface of the target prior to the shot. Within the range of our detectors (0 degrees-8.5 degrees), we find laser-to-deuterium-ion energy conversion efficiency of 4.3% above 0.7 MeV/nucleon while a conservative estimate of the total beam gives a conversion efficiency of 9.4%. (C) 2015 AIP Publishing LLC.

引用

页数：5

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