Lulin Fan

Production of iodine isotopes via ultra-intense laser-driven photonuclear reactions

Tongjun Xu, Guoqiang Zhang, Putong Wang, Yufeng Dong et autres

The investigation and production of proton-rich iodine isotopes predominantly rely on conventional accelerator-based methods, typically requiring prolonged irradiation periods to measure or achieve quantifiable yields for isotopic isolation. Bremsstrahlung radiation sources generated by high-power laser-plasma-accelerated electron beams with ultrahigh charge (tens of …

All-optically controllable electron and X-ray sources from microchannel-guided direct laser acceleration

Chengyu Qin, Hui Zhang, Shun Li, Angxiao Li et autres

Abstract We present an experimental study on electron and X-ray generation from the interaction of a hundreds of TW femtosecond laser with microchannels. Leveraging the guiding effect of the channel structure on both the laser and electrons, a well-collimated electron beam is …

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Proton–boron fusion in femtosecond-laser-irradiated nanowire array target

Putong Wang, Guoqiang Zhang, Xian-Gai Deng, Youjing Wang et autres

In this work, we performed an experimental campaign to study α-particles from laser-driven proton–boron fusion on nanowire array targets. An ultra-intense laser was utilized with an intensity of 2×1020 W/cm2 to interact with nanowire array targets. We verified that nanowire targets have …

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Enhanced laser-driven backward proton acceleration using micro-wire array targets

Lulin Fan, Tongjun Xu, Qingsong Wang, Jiancai Xu et autres

Micro-structured targets can be employed to enhance the coupling of laser energy to the high energy density plasma. Here we report on experimental measurement of enhanced proton beam energy from laser-driven micro-wire array (MWA) targets along the backward direction. An ultra-intense ( …

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Detection of limited-energy α particles using CR-39 in laser-induced p −11B reaction

Putong Wang, Xian-Gai Deng, Zhiguo Ma, Changbo Fu et autres

Due to the harsh radiation environment produced by strong laser plasma, most of the detectors based on semiconductors cannot perform well. So, it is important to develop new detecting techniques with higher detection thresholds and highly charged particle resolution for investigating nuclear …

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Collimated gamma beams with high peak flux driven by laser-accelerated electrons

Lulin Fan, Tongjun Xu, Shun Li, Z. Xu et autres

Abstract Laser-accelerated electrons are promising in producing gamma-photon beams of high peak flux for the study of nuclear photonics, obtaining copious positrons and exploring photon–photon interaction in vacuum. We report on the experimental generation of brilliant gamma-ray beams with not only high …

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High efficiency laser-driven proton sources using 3D-printed micro-structure

Chengyu Qin, H. Zhang, Shun Li, Nengwen Wang et autres

Abstract Fine structured targets are promising in enhancing laser-driven proton acceleration for various applications. Here, we apply 3D-printed microwire-array (MWA) structure to boost the energy conversion efficiency from laser to proton beam. Under irradiation of high contrast femtosecond laser pulse, the MWA …

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High Efficiency Laser-Driven Proton Sources Using 3D-Printed Micro-Structure

Chengyu Qin, Hui Zhang, Shun Li, Nengwen Wang et autres

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