Evidence map›Paper›PMID 35115579›Full record

ArticleScientific reports2022

Influence of spatial-intensity contrast in ultraintense laser-plasma interactions.

R Wilson, M King, N M H Butler, D C Carroll, T P Frazer, M J Duff, A Higginson, R J Dance, J Jarrett, Z E Davidson and 7 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

17 authors.

R WilsonSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
M KingSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
N M H ButlerSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
D C CarrollCentral Laser Facility, STFC Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK.
T P FrazerSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
M J DuffSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
A HigginsonSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
R J DanceSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
J JarrettSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
Z E DavidsonSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
C D ArmstrongSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
H LiuCentral Laser Facility, STFC Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK.
S J HawkesCentral Laser Facility, STFC Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK.
R J ClarkeCentral Laser Facility, STFC Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK.
D NeelySUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
R J GraySUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
P McKennaSUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK. paul.mckenna@strath.ac.uk.

Funding

Engineering and Physical Sciences Research Council EP/G054940/1Engineering and Physical Sciences Research Council EP/K022415/1Engineering and Physical Sciences Research Council EP/M018091/1Engineering and Physical Sciences Research Council EP/R006202/1Engineering and Physical Sciences Research Council EP/R029148/1Laserlab-Europe 871124
6 · The paper itself

Abstract

Increasing the intensity to which high power laser pulses are focused has opened up new research possibilities, including promising new approaches to particle acceleration and phenomena such as high field quantum electrodynamics. Whilst the intensity achievable with a laser pulse of a given power can be increased via tighter focusing, the focal spot profile also plays an important role in the interaction physics. Here we show that the spatial-intensity distribution, and specifically the ratio of the intensity in the peak of the laser focal spot to the halo surrounding it, is important in the interaction of ultraintense laser pulses with solid targets. By comparing proton acceleration measurements from foil targets irradiated with by a near-diffraction-limited wavelength scale focal spot and larger F-number focusing, we find that this spatial-intensity contrast parameter strongly influences laser energy coupling to fast electrons. We find that for multi-petawatt pulses, spatial-intensity contrast is potentially as important as temporal-intensity contrast.

Identifiers

PMID35115579
PMCPMC8814164

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.