Effects of pulse chirp on laser-driven proton acceleration
Permogorov, Alexander LU ; Cantono, Giada LU
; Guenot, Diego
LU
; Persson, Anders
LU
and Wahlström, Claes Göran
LU
(2022)
In Scientific Reports
12.
- Abstract
Optimisation and reproducibility of beams of protons accelerated from laser-solid interactions require accurate control of a wide set of variables, concerning both the laser pulse and the target. Among the former ones, the chirp and temporal shape of the pulse reaching the experimental area may vary because of spectral phase modulations acquired along the laser system and beam transport. Here, we present an experimental study where we investigate the influence of the laser pulse chirp on proton acceleration from ultrathin flat foils (10 and 100 nm thickness), while minimising any asymmetry in the pulse temporal shape. The results show a ± 10 % change in the maximum proton energy depending on the sign of the chirp. This effect is most... (More)
Optimisation and reproducibility of beams of protons accelerated from laser-solid interactions require accurate control of a wide set of variables, concerning both the laser pulse and the target. Among the former ones, the chirp and temporal shape of the pulse reaching the experimental area may vary because of spectral phase modulations acquired along the laser system and beam transport. Here, we present an experimental study where we investigate the influence of the laser pulse chirp on proton acceleration from ultrathin flat foils (10 and 100 nm thickness), while minimising any asymmetry in the pulse temporal shape. The results show a ± 10 % change in the maximum proton energy depending on the sign of the chirp. This effect is most noticeable from 10 nm-thick target foils, suggesting a chirp-dependent influence of relativistic transparency.
(Less)
- author
- Permogorov, Alexander
LU
; Cantono, Giada
LU
; Guenot, Diego
LU
; Persson, Anders
LU
and Wahlström, Claes Göran
LU
- organization
- publishing date
- 2022-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Scientific Reports
- volume
- 12
- article number
- 3031
- publisher
- Nature Publishing Group
- external identifiers
-
- scopus:85125156093
- pmid:35194105
- ISSN
- 2045-2322
- DOI
- 10.1038/s41598-022-07019-4
- language
- English
- LU publication?
- yes
- id
- 18893922-1770-43f4-a3ed-cdb7320a405c
- date added to LUP
- 2022-04-19 15:26:17
- date last changed
- 2024-06-29 20:01:53
@article{18893922-1770-43f4-a3ed-cdb7320a405c,
abstract = {{<p>Optimisation and reproducibility of beams of protons accelerated from laser-solid interactions require accurate control of a wide set of variables, concerning both the laser pulse and the target. Among the former ones, the chirp and temporal shape of the pulse reaching the experimental area may vary because of spectral phase modulations acquired along the laser system and beam transport. Here, we present an experimental study where we investigate the influence of the laser pulse chirp on proton acceleration from ultrathin flat foils (10 and 100 nm thickness), while minimising any asymmetry in the pulse temporal shape. The results show a ± 10 % change in the maximum proton energy depending on the sign of the chirp. This effect is most noticeable from 10 nm-thick target foils, suggesting a chirp-dependent influence of relativistic transparency.</p>}},
author = {{Permogorov, Alexander and Cantono, Giada and Guenot, Diego and Persson, Anders and Wahlström, Claes Göran}},
issn = {{2045-2322}},
language = {{eng}},
publisher = {{Nature Publishing Group}},
series = {{Scientific Reports}},
title = {{Effects of pulse chirp on laser-driven proton acceleration}},
url = {{http://dx.doi.org/10.1038/s41598-022-07019-4}},
doi = {{10.1038/s41598-022-07019-4}},
volume = {{12}},
year = {{2022}},
}