Diagnostic Methodologies of Laser-Initiated 11B(p,α)2α Fusion Reactions

Consoli, F.; Angelis, R. De; Andreoli, P.; Bonasera, A.; Cipriani, M.; Cristofari, G.; Giorgio, Giorgio Di; Giulietti, Danilo; Salvadori, M.

doi:10.3389/fphy.2020.561492

Cited by 18 publications

(35 citation statements)

References 71 publications

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“…The photograph shows the D-dot probe used in the experiment. probe, followed by megahertz-gigahertz oscillations with an exponentially decaying envelope [10,[27][28][29][30] . It is worth noting that we used a shifted timescale by setting the instant t 0 = 0 ns at the moment when the rise of the signal occurs (the EM signal takes the propagation time of t = d Ddot c ≈ 4.1 ns to reach the probe, from the moment when the laser-plasma interaction occurs).…”

Section: Resultsmentioning

confidence: 99%

Transient electromagnetic fields generated in experiments at the PHELIX laser facility

Scisciò

Consoli

Salvadori

et al. 2021

High Pow Laser Sci Eng

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Large-amplitude electromagnetic radiofrequency fields are created by the charge-separation induced in interactions of high-intensity, short-pulse lasers with solid targets and have intensity that decreases with the distance from the target. Alternatively, it was experimentally proved very recently that charged particles emitted by petawatt lasertarget interactions can be deposited on a capacitor-collector structure, far away from the target, and lead to the rapid (nanosecond-scale) generation of large quasi-static electric fields (MV/m), over wide regions. We demonstrate here the generation of both these fields in experiments at the PHELIX laser facility, with approximately 20 J energy and approximately 10 19 W/cm 2 intensity, for picoseconds laser pulses, interacting with pre-ionized polymer foams of near critical density. Quasi-static fields, up to tens of kV/m, were here observed at distances larger than 1 m from the target, with results much higher than the radiofrequency component. This is of primary importance for inertial-confinement fusion and laser-plasma acceleration and also for promising applications in different scenarios.

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Section: Resultsmentioning

confidence: 99%

Transient electromagnetic fields generated in experiments at the PHELIX laser facility

Scisciò

Consoli

Salvadori

et al. 2021

High Pow Laser Sci Eng

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“…The characteristics of this detector, in particular its high sensitivity, make it perfectly suitable to monitor processes characterized by low fluxes such as, for instance, the particles produced by laser-initiated p- 11 B fusion reactions [ 14 ] or laser interactions with gas-jet targets. Moreover, thanks to the compactness and the easy handling of the detector structure, it is also possible to position a set of them at different angles and distances from the interaction point.…”

Section: Discussionmentioning

confidence: 99%

“…In experiments of laser–matter interaction, this limits the solid angle of detection coverage, and thus the overall sensitivity of the detection system. Indeed, there are several applications, for instance those characterized by low fluxes of emitted particles, where instead high sensitivities are required [ 14 ] . For other cases, because the ion fluxes decrease with respect to energy, information about the maximum energy of the emitted particles can be retrieved accurately only by detectors with high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Time-of-flight methodologies with large-area diamond detectors for ion characterization in laser-driven experiments

Salvadori

Giorgio

Cipriani

et al. 2022

High Pow Laser Sci Eng

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Time-Of-Flight (TOF) technique coupled with semiconductor detectors is a powerful instrument to provide real-time characterization of ions accelerated because of laser-matter interactions. Nevertheless, the presence of strong electromagnetic pulses (EMPs) generated during the interactions, can severely hinder its employment. For this reason, the diagnostic system must be designed to have high EMP shielding. Here we present a new advanced prototype of detector, developed at ENEA-Centro Ricerche Frascati (Italy), with a large area (15 mm × 15 mm) polycrystalline diamond sensor having 150 µm thickness. The tailored detector design and testing ensure high sensitivity and, thanks to the fast temporal response, high energy resolution of the reconstructed ion spectrum. The detector was offline calibrated and then successfully tested during an experimental campaign carried out at the PHELIX laser facility (𝐸 𝐿 ∼100 J, 𝜏 𝐿 = 750 fs, 𝐼 𝐿 ∼ (1 − 2.5) × 10 19 W cm -2 ) at GSI (Germany). The high rejection to EMP fields was demonstrated and suitable calibrated spectra of the accelerated protons were obtained.

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“…The compactness of the spectrometers makes them very suitable to be used in cluttered experimental chambers, even when very little space is available. The possibility to place these devices rather close to the interaction point and their intrinsic sensitivity even in the harsh conditions that this proximity induces, make them suitable candidates for the accurate characterizations of ions produced in experiments of low-rate fusion reactions triggered by laser [12,17]). The first tests performed on them in experiments at the ABC laser facilty showed their correct operation even at low distances from the target.…”

Section: Discussionmentioning

confidence: 99%

Development of advanced Thomson spectrometers for nuclear fusion experiments initiated by laser

Giorgio¹,

Consoli²,

Angelis³

et al. 2020

J. Inst.

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A: Thomson Spectrometers are devices capable to separate the several particle species (with distinct charge-to-mass ratio and energy) produced by the different regimes of laser-matter experiments. In this work we describe the development of advanced spectrometers for low and medium energy particles. In particular, they are suitable for protons in the 5 keV-2 MeV and 100 keV-10 MeV energy ranges, respectively. The new prototypes of spectrometers have been designed and built to have a high sensitivity and be adaptable to many experimental situations and configurations, and are tailored to the characterization of charged particles and products of nuclear fusion reactions initiated by high energy and intensity lasers. Details on the realized prototypes, on their characterization and testing, together with the first experimental results are discussed. K: Plasma diagnostics -charged-particle spectroscopy; Spectrometers; Erasable phosphors; Plasma generation (laser-produced, RF, x ray-produced) 1Corresponding author.

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Diagnostic Methodologies of Laser-Initiated 11B(p,α)2α Fusion Reactions

Cited by 18 publications

References 71 publications

Transient electromagnetic fields generated in experiments at the PHELIX laser facility

Transient electromagnetic fields generated in experiments at the PHELIX laser facility

Time-of-flight methodologies with large-area diamond detectors for ion characterization in laser-driven experiments

Development of advanced Thomson spectrometers for nuclear fusion experiments initiated by laser

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