Geometric scaling of laser-driven proton focusing from hemispherical foils

J. Griff-McMahon; X. Vaisseau; W. Fox; K. Lezhnin; K. Bhutwala; R. Nedbailo; V. Ospina-Bohórquez; T. Karpowski; P. K. Patel; S. Malko

doi:10.1103/3cs1-8r6s

Geometric scaling of laser-driven proton focusing from hemispherical foils

J. Griff-McMahon
, X. Vaisseau
, W. Fox
, K. Lezhnin
, K. Bhutwala
, R. Nedbailo
, V. Ospina-Bohórquez
, T. Karpowski
, P. K. Patel
, S. Malko

PPPL Discovery Plasma Science

Research output: Contribution to journal › Article › peer-review

Abstract

We systematically characterize the focusing behavior of laser-driven proton beams from hemispherical targets of various diameters using mesh radiography. The proton focal location is inferred to be near the geometrical center for the smallest tested hemisphere (Ψ = D_hemi/D_Laser = 6.1). However, larger hemispheres (Ψ = 14.6) degrade the focusing behavior and behave more like flat foils with focal location significantly inside the hemisphere. We also infer a tight virtual focus of 9 ± 3μm through a mesh transition analysis.

Original language	English (US)
Article number	013182
Journal	Physical Review Research
Volume	8
Issue number	1
DOIs	https://doi.org/10.1103/3cs1-8r6s
State	Published - Jan 2026

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1103/3cs1-8r6s

Cite this

@article{590e6e0479fd4cb39e1d4f27c6a97a5f,

title = "Geometric scaling of laser-driven proton focusing from hemispherical foils",

abstract = "We systematically characterize the focusing behavior of laser-driven proton beams from hemispherical targets of various diameters using mesh radiography. The proton focal location is inferred to be near the geometrical center for the smallest tested hemisphere (Ψ = Dhemi/DLaser = 6.1). However, larger hemispheres (Ψ = 14.6) degrade the focusing behavior and behave more like flat foils with focal location significantly inside the hemisphere. We also infer a tight virtual focus of 9 ± 3μm through a mesh transition analysis.",

author = "J. Griff-McMahon and X. Vaisseau and W. Fox and K. Lezhnin and K. Bhutwala and R. Nedbailo and V. Ospina-Boh{\'o}rquez and T. Karpowski and Patel, \{P. K.\} and S. Malko",

note = "Publisher Copyright: {\textcopyright} 2026 authors. Published by the American Physical Society.",

year = "2026",

month = jan,

doi = "10.1103/3cs1-8r6s",

language = "English (US)",

volume = "8",

journal = "Physical Review Research",

issn = "2643-1564",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Geometric scaling of laser-driven proton focusing from hemispherical foils

AU - Griff-McMahon, J.

AU - Vaisseau, X.

AU - Fox, W.

AU - Lezhnin, K.

AU - Bhutwala, K.

AU - Nedbailo, R.

AU - Ospina-Bohórquez, V.

AU - Karpowski, T.

AU - Patel, P. K.

AU - Malko, S.

PY - 2026/1

Y1 - 2026/1

N2 - We systematically characterize the focusing behavior of laser-driven proton beams from hemispherical targets of various diameters using mesh radiography. The proton focal location is inferred to be near the geometrical center for the smallest tested hemisphere (Ψ = Dhemi/DLaser = 6.1). However, larger hemispheres (Ψ = 14.6) degrade the focusing behavior and behave more like flat foils with focal location significantly inside the hemisphere. We also infer a tight virtual focus of 9 ± 3μm through a mesh transition analysis.

AB - We systematically characterize the focusing behavior of laser-driven proton beams from hemispherical targets of various diameters using mesh radiography. The proton focal location is inferred to be near the geometrical center for the smallest tested hemisphere (Ψ = Dhemi/DLaser = 6.1). However, larger hemispheres (Ψ = 14.6) degrade the focusing behavior and behave more like flat foils with focal location significantly inside the hemisphere. We also infer a tight virtual focus of 9 ± 3μm through a mesh transition analysis.

UR - https://www.scopus.com/pages/publications/105031151514

UR - https://www.scopus.com/pages/publications/105031151514#tab=citedBy

U2 - 10.1103/3cs1-8r6s

DO - 10.1103/3cs1-8r6s

M3 - Article

AN - SCOPUS:105031151514

SN - 2643-1564

VL - 8

JO - Physical Review Research

JF - Physical Review Research

IS - 1

M1 - 013182

ER -

Geometric scaling of laser-driven proton focusing from hemispherical foils

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this