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Stabilized radiation pressure acceleration and neutron generation in ultrathin deuterated foils

Abstract:
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.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physrevlett.129.114801

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Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
129
Issue:
11
Article number:
114801
Publication date:
2022-09-09
Acceptance date:
2022-04-28
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pmid:
36154426


Language:
English
Keywords:
Pubs id:
1280577
Local pid:
pubs:1280577
Deposit date:
2022-11-14

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