Stabilized Radiation Pressure Acceleration and Neutron Generation in Ultrathin Deuterated Foils.

Autor:	Alejo A; School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom.; Instituto Galego de Física de Altas Enerxías, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain., Ahmed H; School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom.; Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom., Krygier AG; Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA., Clarke R; Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom., Freeman RR; Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA., Fuchs J; LULI-CNRS, CEA, UPMC Univ Paris 06: Sorbonne Université, Ecole Polytechnique, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France., Green A; School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom., Green JS; Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom., Jung D; School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom., Kleinschmidt A; Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany., Morrison JT; Propulsion Systems Directorate, Air Force Research Lab, Wright Patterson Air Force Base, Ohio 45433, USA., Najmudin Z; The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, SW7 2AZ, United Kingdom., Nakamura H; The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, SW7 2AZ, United Kingdom., Norreys P; Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom.; Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom., Notley M; Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom., Oliver M; Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom., Roth M; Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany., Vassura L; LULI-CNRS, CEA, UPMC Univ Paris 06: Sorbonne Université, Ecole Polytechnique, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France., Zepf M; School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom., Borghesi M; School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom., Kar S; School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2022 Sep 09; Vol. 129 (11), pp. 114801.
DOI:	10.1103/PhysRevLett.129.114801
Abstrakt:	Premature relativistic transparency of ultrathin, laser-irradiated targets is recognized as an obstacle to achieving a stable radiation pressure acceleration in the "light sail" (LS) mode. Experimental data, corroborated by 2D PIC simulations, show that a few-nm thick overcoat surface layer of high Z material significantly improves ion bunching at high energies during the acceleration. This is diagnosed by simultaneous ion and neutron spectroscopy following irradiation of deuterated plastic targets. In particular, copious and directional neutron production (significantly larger than for other in-target schemes) arises, under optimal parameters, as a signature of plasma layer integrity during the acceleration.
Databáze:	MEDLINE
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