Laser-driven particle and photon beams and some applications

Ledingham, K.W.D.; Galster, W.

doi:10.1088/1367-2630/12/4/045005

Cited by 155 publications

(101 citation statements)

References 256 publications

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“…The laser pulse shape was described by a super-Gaussian function. Molecular densities of the targets corresponded to the solid state densities and they were equal to 4.86 × 10 22 molecules/cm 3 for CH and 2.69 × 10 22 molecules/cm 3 for ErH 3 . In front of the target, a pre-plasma layer of 0.25 m thickness and the density shape described by an exponential function was used and the ionization degrees of target components were assumed to be 6 for carbon and 10 for erbium (as it was assumed in [17]).…”

Section: Resultsmentioning

confidence: 99%

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Numerical simulations of generation of high-energy ion beams driven by a petawatt femtosecond laser

2015

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Abstract. This contribution presents results of a Particle-in-Cell simulation of ion beam acceleration via the interaction of a petawatt 25 fs laser pulse of high intensity (up to ~10 21 W/cm 2 ) with thin hydrocarbon (CH) and erbium hydride (ErH 3 ) targets of equal areal mass density (of 0.6 g/m 2 ). A special attention is paid to the effect that the laser pulse polarization and the material composition of the target have on the maximum ion energies and the number of high energy (>10 MeV) protons. It is shown that both the mean and the maximum ion energies are higher for the linear polarization than for the circular one. A comparison of the maximum proton energies and the total number of protons generated from the CH and ErH 3 targets using a linearly polarized beam is presented. For the ErH 3 targets the maximum proton energies are higher and they reach 50 MeV for the laser pulse intensity of 10 21 W/cm 2 . The number of protons with energies higher than 10 MeV is an order of magnitude higher for the ErH 3 targets than that for the CH targets.

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Section: Resultsmentioning

confidence: 99%

“…Laser-driven generation of high-energy ion beams has recently attracted considerable interest due to a variety of potential applications including proton radiography, inertial confi nement fusion (ICF) fast ignition, nuclear physics or hadron therapy [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of generation of high-energy ion beams driven by a petawatt femtosecond laser

2015

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“…As a promising alternative to conventional proton sources, compact laser plasma based accelerators have been suggested [5][6][7][8][9][10][11]. Practically, LDPR originates from hydrogenated contaminants on almost any solid target surface when irradiated with sufficiently intense ultrashort-pulse laser light [12].…”

Section: Introductionmentioning

confidence: 99%

Dose-controlled irradiation of cancer cells with laser-accelerated proton pulses

et al. 2012

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Proton beams are a promising tool for the improvement of radiotherapy of cancer, and compact laserdriven proton radiation (LDPR) is discussed as an alternative to established large-scale technology facilitating wider clinical use. Yet, clinical use of LDPR requires substantial development in reliable beam generation and transport, but also in dosimetric protocols as well as validation in radiobiological studies. Here, we present the first dose-controlled direct comparison of the radiobiological effectiveness of intense proton pulses from a laser-driven accelerator with conventionally generated continuous proton beams, demonstrating a first milestone in translational research. Controlled dose delivery, precisely online and offline monitored for each out of *4,000 pulses, resulted in an unprecedented relative dose uncertainty of below 10 %, using approaches scalable to the next translational step toward radiotherapy application.

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“…At intensities above 10 18 W/cm 2 , relativistic plasmas are created as the quiver velocity of the generated electrons approaches the velocity of light. The laser energy is primarily transferred to the plasma electrons and they are accelerated to very high energies [1]. The rapid exit of these hot electrons from the target creates a space-charge field which accelerates protons and ions [2].…”

Section: Introductionmentioning

confidence: 99%

Observation of neutrons in the interaction of high intensity laser pulses with solid targets

Tayyab

Chakera

Naik

et al. 2013

EPJ Web of Conferences

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Abstract.We report an experimental study on fusion neutron generation from deuterated polyethylene (CD 2 ) n target irradiated by 400 mJ, 45 femtosecond laser pulses focused to an intensity >10 18 W/cm 2 . The fusion neutron signal has been detected using a CR-39 detector, a bubble detector, and also confirmed by a neutron time of flight detector. In addition, substantial bremsstrahlung X-ray radiation of MeV energy was also observed. These MeV X-rays have been used to trigger ( , n) reaction in Be and Cu targets and the resulting photo-neutrons were detected on a BF 3 and a bubble detector.

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Laser-driven particle and photon beams and some applications

Cited by 155 publications

References 256 publications

Numerical simulations of generation of high-energy ion beams driven by a petawatt femtosecond laser

Numerical simulations of generation of high-energy ion beams driven by a petawatt femtosecond laser

Dose-controlled irradiation of cancer cells with laser-accelerated proton pulses

Observation of neutrons in the interaction of high intensity laser pulses with solid targets

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