We used the PW high-repetition laser facility VEGA-3 at Centro de Láseres Pulsados in Salamanca,with the goal of studying the generation of radioisotopes using laser-driven proton beams.Various types of targets h...We used the PW high-repetition laser facility VEGA-3 at Centro de Láseres Pulsados in Salamanca,with the goal of studying the generation of radioisotopes using laser-driven proton beams.Various types of targets have been irradiated including in particular several targets containing boron to generateα-particles through the hydrogen–boron fusion reaction.We have successfully identifiedγ-ray lines from several radioisotopes created by irradiation using lasergeneratedα-particles or protons including^(43)Sc,^(44)Sc,^(48)Sc,^(7)Be,^(11)C and^(18)F.We show that radioisotope generation can be used as a diagnostic tool to evaluateα-particle generation in laser-driven proton–boron fusion experiments.We also show the production of^(11)C radioisotopes,≈6×10~6,and of^(44)Sc radioisotopes,≈5×10~4per laser shot.This result can open the way to develop laser-driven radiation sources of radioisotopes for medical applications.展开更多
Real-time evaluation of laser-driven byproducts is crucial for state-of-the-art facilities operating at high repetition rates.This work presents real-time measurements of hard X-rays(bremsstrahlung radiation) generate...Real-time evaluation of laser-driven byproducts is crucial for state-of-the-art facilities operating at high repetition rates.This work presents real-time measurements of hard X-rays(bremsstrahlung radiation) generated from the interaction of high-intensity laser pulses with solid targets in the target normal sheath acceleration regime using a scintillator stack detector. The detector offers insights into the effectiveness of laser–plasma interaction through measured fiuctuations in bremsstrahlung radiation temperature and scintillation light yield on a shot-to-shot basis. Moreover, a strong correlation of the bremsstrahlung measurements(i.e., temperature and yield) with the cutoff energy of laser-driven protons was observed. The scintillator stack detector serves not only as a diagnostic for online monitoring of the laser–plasma interaction but also as a promising tool for estimating proton energy fiuctuations in a non-disruptive manner, which is particularly important when direct proton source characterization is impractical, for example, during experiments aimed at irradiating user samples with the accelerated proton beam.展开更多
基金supported by COST(European Cooperation in Science and Technology)through Action CA21128 PROBONO(PROton BOron Nuclear Fusion:from energy production to medical applicati Ons)funding from the European Union’s 2020 research and innovation program under grant agreement No.101008126(RADNEXT project)United States Department of Energy under grant#DEFG02-93ER40773+3 种基金SMILEI simulations were performed thanks to granted access to the HPC resources of TGCC under allocation No.2023-A0140514117 made by GENCIfinancial support of the Id Ex University of Bordeaux/Grand Research Program‘GPR LIGHT’and of the Graduate Program on Light Sciences and Technologies of the University of BordeauxL.G.and V.K.acknowledge the support of the Czech Science Foundation through grant No.GACR24-11398Ssupport of HB11 Energy,Ltd.,Australia,through its Collaborative Science Program.H.L.and M.H.
文摘We used the PW high-repetition laser facility VEGA-3 at Centro de Láseres Pulsados in Salamanca,with the goal of studying the generation of radioisotopes using laser-driven proton beams.Various types of targets have been irradiated including in particular several targets containing boron to generateα-particles through the hydrogen–boron fusion reaction.We have successfully identifiedγ-ray lines from several radioisotopes created by irradiation using lasergeneratedα-particles or protons including^(43)Sc,^(44)Sc,^(48)Sc,^(7)Be,^(11)C and^(18)F.We show that radioisotope generation can be used as a diagnostic tool to evaluateα-particle generation in laser-driven proton–boron fusion experiments.We also show the production of^(11)C radioisotopes,≈6×10~6,and of^(44)Sc radioisotopes,≈5×10~4per laser shot.This result can open the way to develop laser-driven radiation sources of radioisotopes for medical applications.
基金the ELIMAIA experimental team and the L3-HAPLS laser team for the support provided during the experimentfunded by the Ministry of Education, Youth and Sports of the Czech Republic by the project ‘Advanced Research Using High Intensity Laser Produced Photons and Particles’ (CZ.02.1.01/0.0/0.0/16_019/0000789)supported by the European Structural and Investment Fund and the Czech Ministry of Education, Youth and Sports (Project International mobility MSCA-IF IV FZUCZ.02.2.69/0.0/0.0/20-079/0017754)。
文摘Real-time evaluation of laser-driven byproducts is crucial for state-of-the-art facilities operating at high repetition rates.This work presents real-time measurements of hard X-rays(bremsstrahlung radiation) generated from the interaction of high-intensity laser pulses with solid targets in the target normal sheath acceleration regime using a scintillator stack detector. The detector offers insights into the effectiveness of laser–plasma interaction through measured fiuctuations in bremsstrahlung radiation temperature and scintillation light yield on a shot-to-shot basis. Moreover, a strong correlation of the bremsstrahlung measurements(i.e., temperature and yield) with the cutoff energy of laser-driven protons was observed. The scintillator stack detector serves not only as a diagnostic for online monitoring of the laser–plasma interaction but also as a promising tool for estimating proton energy fiuctuations in a non-disruptive manner, which is particularly important when direct proton source characterization is impractical, for example, during experiments aimed at irradiating user samples with the accelerated proton beam.
