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Akademický článek

Parametric study of high-energy ring-shaped electron beams from a laser wakefield accelerator

Publikováno v: New Journal of Physics, Vol 24, Iss 1, p 013017 (2022)

Laser wakefield accelerators commonly produce on-axis, low-divergence, high-energy electron beams. However, a high charge, annular shaped beam can be trapped outside the bubble and accelerated to high energies. Here we present a parametric study on t

Externí odkaz: https://doaj.org/article/73efba51f7cd478abdc2f40829d178b9

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Akademický článek

Making pions with laser light

Autor: W Schumaker, T Liang, R Clarke, J M Cole, G Grittani, S Kuschel, S P D Mangles, Z Najmudin, K Poder, G Sarri, D Symes, A G R Thomas, M Vargas, M Zepf, K Krushelnick

Publikováno v: New Journal of Physics, Vol 20, Iss 7, p 073008 (2018)

The interaction of high intensity short pulse laser beams with plasmas can accelerate electrons to energies in excess of a GeV. These electron beams can subsequently be used to generate short-lived particles such as positrons, muons, and pions. In re

Externí odkaz: https://doaj.org/article/b3524daaf3dd420482a39938d7cc2863

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Akademický článek

Tools for uranium characterization in carbonate samples: case studies of natural U–Pb geochronology reference materials

Autor: E. T. Rasbury, T. M. Present, P. Northrup, R. V. Tappero, A. Lanzirotti, J. M. Cole, K. M. Wooton, K. Hatton

Publikováno v: Geochronology, Vol 3, Pp 103-122 (2021)

Laser ablation U–Pb analyses of carbonate (LAcarb) samples has greatly expanded the potential for U–Pb dating to a variety of carbonate-producing settings. Carbonates that were previously considered impossible to date using isotope dilution metho

Externí odkaz: https://doaj.org/article/3dbb8cf455b14c0dace16d4e65153118

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Akademický článek

Characterization of laser wakefield acceleration efficiency with octave spanning near-IR spectrum measurements

Publikováno v: Physical Review Accelerators and Beams, Vol 25, Iss 10, p 101302 (2022)

We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser to the plasma wakefield and from the plasma to the accelerated electron beam was diagnosed b

Externí odkaz: https://doaj.org/article/a4841cb57f2d4a0dafc47d2acbe910f9

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Akademický článek

Bright x-ray radiation from plasma bubbles in an evolving laser wakefield accelerator

Publikováno v: Physical Review Accelerators and Beams, Vol 23, Iss 6, p 061301 (2020)

We show that the properties of the electron beam and bright x rays produced by a laser wakefield accelerator can be predicted if the distance over which the laser self-focuses and compresses prior to self-injection is taken into account. A model base

Externí odkaz: https://doaj.org/article/0af2be0687dd49cdb637910c98cf8668

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Akademický článek

Experimental Signatures of the Quantum Nature of Radiation Reaction in the Field of an Ultraintense Laser

Publikováno v: Physical Review X, Vol 8, Iss 3, p 031004 (2018)

The description of the dynamics of an electron in an external electromagnetic field of arbitrary intensity is one of the most fundamental outstanding problems in electrodynamics. Remarkably, to date, there is no unanimously accepted theoretical solut

Externí odkaz: https://doaj.org/article/1f773c284fe742b981cfc0e3a56fb879

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Akademický článek

Experimental Evidence of Radiation Reaction in the Collision of a High-Intensity Laser Pulse with a Laser-Wakefield Accelerated Electron Beam

Publikováno v: Physical Review X, Vol 8, Iss 1, p 011020 (2018)

The dynamics of energetic particles in strong electromagnetic fields can be heavily influenced by the energy loss arising from the emission of radiation during acceleration, known as radiation reaction. When interacting with a high-energy electron be

Externí odkaz: https://doaj.org/article/368118f5f341453ca728edd86784aa65

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Transparent and flexible polymerized graphite oxide thin film with frequency-dependent dielectric constant

Autor: D. W. Lee, J. W. Seo, G. R. Jelbert, L. de Los Santos, J. M. Cole, C. Panagopoulos, C. H. W. Barnes

Here we report on the preparation of transparent and flexible polymerized graphite oxide, which is composed of carbons with sp3-hybridized orbitals and a non-planar ring structure, and which demonstrates dispersion in its dielectric constant at room

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4dfaffb9b50e4bddf0c7b5a4df9bdb59

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