High repetition rate laser-driven Kα X-ray source utilizing melted metal target

Иванов, К. А.; Uryupina, D. S.; Volkov, R. V.; Shkurinov, A. P.; Ozheredov, I. A.; Paskhalov, A. A.; Eremin, N.V.; Savel’ev, A. B.

doi:10.1016/j.nima.2011.01.160

Cited by 15 publications

(7 citation statements)

References 26 publications

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“…LMs with high stability can be X‐ray source anode targets, which could tolerate higher frequency pulses. [ 94 ] Besides, LMs possess excellent X‐ray absorption capability, showing great potential as contrast agents in the imaging of blood vessels and other tissues. The schematic diagram of injecting Ga particle solution into animals to obtain kidney images is shown in Figure a.…”

Section: Application In Biomedicinementioning

confidence: 99%

Emerging Liquid Metal Biomaterials: From Design to Application

et al. 2022

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Liquid metals (LMs) as emerging biomaterials possess unique advantages including their favorable biosafety, high fluidity, and excellent electrical and thermal conductivities, thus providing a unique platform for a wide range of biomedical applications ranging from drug delivery, tumor therapy, and bioimaging to biosensors. The structural design and functionalization of LMs endow them with enhanced functions such as enhanced targeting ability and stimuli responsiveness, enabling them to achieve better and even multifunctional synergistic therapeutic effects. Herein, the advantages of LMs in biomedicine are presented. The design of LM‐based biomaterials with different scales ranging from micro‐/nanoscale to macroscale and various components is explored in‐depth to promote the understanding of structure–property relationships, guiding their performance optimization and applications. Furthermore, the related advanced progress in the development of LM‐based biomaterials in biomedicine is summarized. Current challenges and prospects of LMs in the biomedical field are also discussed.

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Section: Application In Biomedicinementioning

confidence: 99%

Emerging Liquid Metal Biomaterials: From Design to Application

et al. 2022

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“…An opportunity of liquid targets' application, for example, of liquid gallium (Ga) was considered in Refs. [10][11][12]. This target is unique since it is completely renewable and makes the X-ray repetition rate depend only on the laser pulse repetition rate.…”

Section: Introductionmentioning

confidence: 99%

“…This target is unique since it is completely renewable and makes the X-ray repetition rate depend only on the laser pulse repetition rate. Ga has an atomic number Z = 31 and it was enough to reach high X-ray photons yield about 10 5 photons/shot when liquid Ga target was irradiated by laser pulses with intensity ∼2 × 10 17 W/cm 2 [10] . The main disadvantage of this target type is strong sputtering into vacuum space ∼10 3 µm of liquid Ga per laser shot at laser intensity on target ∼10 16 W/cm 2 .…”

Section: Introductionmentioning

confidence: 99%

Clean source of soft X-ray radiation formed in supersonic Ar gas jets by high-contrast femtosecond laser pulses of relativistic intensity

Alkhimova

Ryazantsev

Skobelev

et al. 2020

High Pow Laser Sci Eng

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In this work, we optimized a clean, versatile, compact source of soft X-ray radiation $(E_{\text{x}\text{-}\text{ray}}\sim 3~\text{keV})$ with an yield per shot up to $7\times 10^{11}~\text{photons}/\text{shot}$ in a plasma generated by the interaction of high-contrast femtosecond laser pulses of relativistic intensity $(I_{\text{las}}\sim 10^{18}{-}10^{19}~\text{W}/\text{cm}^{2})$ with supersonic argon gas jets. Using high-resolution X-ray spectroscopy approaches, the dependence of main characteristics (temperature, density and ionization composition) and the emission efficiency of the X-ray source on laser pulse parameters and properties of the gas medium was studied. The optimal conditions, when the X-ray photon yield reached a maximum value, have been found when the argon plasma has an electron temperature of $T_{\text{e}}\sim 185~\text{eV}$ , an electron density of $N_{\text{e}}\sim 7\times 10^{20}~\text{cm}^{-3}$ and an average charge of $Z\sim 14$ . In such a plasma, a coefficient of conversion to soft X-ray radiation with energies $E_{\text{x}\text{-}\text{ray}}\sim 3.1\;(\pm 0.2)~\text{keV}$ reaches $8.57\times 10^{-5}$ , and no processes leading to the acceleration of electrons to MeV energies occur. It was found that the efficiency of the X-ray emission of this plasma source is mainly determined by the focusing geometry. We confirmed experimentally that the angular distribution of the X-ray radiation is isotropic, and its intensity linearly depends on the energy of the laser pulse, which was varied in the range of 50–280 mJ. We also found that the yield of X-ray photons can be notably increased by, for example, choosing the optimal laser pulse duration and the inlet pressure of the gas jet.

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“…These parameters provide for intensities up to I=10 18 Wcm -2 , inducing short lived, dense plasma which efficiently emits hard X-rays, accelerates multi-charged ions, etc. [1,2].…”

Section: Introductionmentioning

confidence: 99%