Experimental investigation on nuclear reactions using a laser-accelerated proton and deuteron beam

Tayyab, M.; Bagchi, Suman; Moorti, A.; Chakera, J. A.

doi:10.1088/1361-6587/ab4339

Cited by 10 publications

(14 citation statements)

References 49 publications

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“…Since 2005, there have been a series of laser-driven p-11 B experiments at several diferent facilities (Labaune et al [23,24], Picciotto et al [25], Margarone et al [26], Baccou et al [27], Tayyab et al [28], Giufrida et al [29], Margarone et al [30], Bonvalet et al [31], TPW [32], Margarone et al [33]) and the measured alpha particle yields have shown an impressive increase, as seen in Figure 3. A common goal of these experiments has been to maximize the generation of high-energy protons via laser-driven charged particle acceleration (CPA) and to interact these protons with boroncontaining targets to generate alpha particles via the p-11 B reaction.…”

Section: Alpha Yields From Laser-driven Experiments With Boron Targetsmentioning

confidence: 99%

“…We see that experiments have been done at a variety of wavelengths, with laser energies varying from 15 J to 1.4 kJ, laser pulse widths of 25 fs to 300 ps, and focused intensities "I" from 3 × 10 16 to 2 × 10 21 . Te experiments on the Ti : Sa laser system at the Laser Plasma Division, RRCAT, India [28] had the shortest 25 fs pulse width and focal intensities of 1 × 10 20 . Tis ensemble of experiments also encompasses a broad range of laser prepulse or contrast ratios.…”

Section: Alpha Yields From Laser-driven Experiments With Boron Targetsmentioning

confidence: 99%

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Path to Increasing p-B11 Reactivity via ps and ns Lasers

et al. 2022

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The Lawson criterion for proton-boron (p-11B) thermonuclear fusion is substantially higher than that for deuterium-tritium (DT) because the fusion cross section is lower and peaks at higher ion energies. The Maxwellian averaged p-11B reactivity peaks at several hundred keV, where bremsstrahlung radiation emission may dominate over fusion reactions if electrons and ions are in thermal equilibrium and the losses are unrestricted. Nonequilibrium burn has often been suggested to realize the benefits of this aneutronic reaction, but the predominance of elastic scattering over fusion reactivity makes this difficult to achieve. The development of ultrashort pulse lasers (USPL) has opened new possibilities for initiating nonequilibrium thermonuclear burns and significant numbers of p-11B alpha particles have been reported from several experiments. We present an analysis that shows that these significant alpha yields are the result of beam fusion reactions that do not scale to net energy gain. We further find that the yields can be explained by experimental parameters and recently updated cross sections such that a postulated avalanche mechanism is not required. We use this analysis to understand the underlying physics of USPL-driven nonequilibrium fusion reactions and whether they can be used to initiate fusion burns. We conclude by outlining a path to increasing the p-11B reactivity towards the goal of achieving ignition and describing the design principles that we will use to develop a computational point design.

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Section: Alpha Yields From Laser-driven Experiments With Boron Targetsmentioning

confidence: 99%

Section: Alpha Yields From Laser-driven Experiments With Boron Targetsmentioning

confidence: 99%

Path to Increasing p-B11 Reactivity via ps and ns Lasers

et al. 2022

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“…The same case at 100 Hz is depicted by the black dashed line. The estimations for a compact laser were calculated from the single-shot experimental data reported in Tayyab et al 24 .…”

Section: Production Of 11 Cmentioning

confidence: 99%

Production of carbon-11 for PET preclinical imaging using a high-repetition rate laser-driven proton source

Peñas,

Alejo,

Bembibre

et al. 2024

Preprint

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Most advanced medical imaging techniques, such as positron-emission tomography (PET), require tracers that are produced in conventional particle accelerators. This paper focuses on the evaluation of a potential alternative technology based onlaser-driven ion acceleration for the production of radioisotopes for PET imaging. We report for the first time the use of ahigh-repetition rate, ultra-intense laser system for the production of carbon-11 in multi-shot operation. Proton bunches with energies up to 10 – 14 MeV were systematically accelerated in long series at pulse rates between 0.1 and 1 Hz using a PW-class laser. These protons were used to activate a boron target via the 11B(p,n)11C nuclear reaction. A peak activity of 234 kBq was obtained in multi-shot operation with laser pulses with an energy of 25 J. Significant carbon-11 production was also achieved for lower pulse energies. The experimental carbon-11 activities measured in this work are comparable to the levels required for preclinical PET, which would be feasible by operating at the repetition rate of current state-of-the-art technology (10Hz). The scalability of next-generation laser-driven accelerators in terms of this parameter for sustained operation over time could increase these overall levels into the clinical PET range.

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“…Davis et al have studied theoretically neutron production from the fusion reaction of 7 Li(d, xn) [18]. Tayyab et al conducted an experimental investigation on the production of 11 C using proton and deuteron beams generated by the interaction of a 25 fs, 150 TW Ti: sapphire laser with thin foils [19], in which the highest 11 C activity obtained was 5.2 kBq per shot. Ma et al theoretically investigated the photonuclear production of 62,64 Cu at a laser intensity of 3.4 × 10 21 W cm −2 [20].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of medical isotopes ^62,64Cu and ⁶⁸Ga production using intense picosecond laser pulse

Cao

Lan

et al. 2023

Plasma Phys. Control. Fusion

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Radioisotopes are indispensable agents in medical diagnosis and treatment, among which 62, 64Cu and 68Ga are medical isotopes widely used in positron emission tomography (PET) imaging. Experiments of generating these radioisotopes via laser-induced photonuclear reactions were performed on the XingGuangIII laser facility of the Laser Fusion Research Center (LFRC) at Mianyang. Large-charge (Q_e ~ 40 nC) MeV electron (e–) beams were generated with 100 TW picosecond (ps) laser pulses. The e– beams then impinge on a metal stack composed of Ta foil and activation plates (natural Cu and Ga2O3), producing high-energy bremsstrahlung radiations and isotopes 62, 64Cu and 68Ga, respectively. The characteristic emissions of the produced 62, 64Cu and 68Ga were off-line detected and the production yields of 62, 64Cu and 68Ga were obtained to be the order of 106 per laser shot. The dependence of radioisotope production efficiency (per e–) on electron temperature (T_e) is investigated through Geant4 simulations. It is found that the production efficiency increases with the T_e and then reaches a saturation value of 8 × 10−5 for 62Cu and 10–5 for 68Ga at T_e ~ 10 MeV. The prospect of producing medically isotopes 62, 64Cu and 68Ga is further evaluated by using table-top femtosecond laser system of high repetition. Considering a repetition rate of 100 Hz, it is expected that the activity can reach 0.2 GBq for 62Cu, 0.1 GBq for 64Cu and 0.05 GBq for 68Ga, respectively. Such activity would meet the required dose for clinical PET imaging, indicating the great potential to produce medical radioisotopes with an all-optical, high-repetition laser system.

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Experimental investigation on nuclear reactions using a laser-accelerated proton and deuteron beam

Cited by 10 publications

References 49 publications

Path to Increasing p-B11 Reactivity via ps and ns Lasers

Path to Increasing p-B11 Reactivity via ps and ns Lasers

Production of carbon-11 for PET preclinical imaging using a high-repetition rate laser-driven proton source

Experimental study of medical isotopes ^62,64Cu and ⁶⁸Ga production using intense picosecond laser pulse

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Experimental investigation on nuclear reactions using a laser-accelerated proton and deuteron beam

Cited by 10 publications

References 49 publications

Path to Increasing p-B11 Reactivity via ps and ns Lasers

Path to Increasing p-B11 Reactivity via ps and ns Lasers

Production of carbon-11 for PET preclinical imaging using a high-repetition rate laser-driven proton source

Experimental study of medical isotopes 62,64Cu and 68Ga production using intense picosecond laser pulse

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Experimental study of medical isotopes ^62,64Cu and ⁶⁸Ga production using intense picosecond laser pulse