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Artykuły w czasopismach na temat „ELECTRON LASER”

Autor: Grafiati

Data publikacji: 11 września 2023

Data aktualizacji: 31 lipca 2025

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1

Prasad, Vinod, Rinku Sharma, and Man Mohan. "Laser Assisted Electron - Alkali Atom Collisions." Australian Journal of Physics 49, no. 6 (1996): 1109. http://dx.doi.org/10.1071/ph961109.

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Lasar assisted inelastic scattering of electrons by alkali atoms is studied theoretically. The non-perturbative quasi-energy method, which is generalised for many atomic states, is used to describe the laser–atom interaction, and the electron–atom interaction is treated within the first Born approximation. We have calculated the total cross section for the excitation of sodium atoms due to simultaneous electron–photon collisions. We show the effect of laser and collision parameters, e.g. laser intensity, polarisation and incident electron energy, on the excitation process.

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2

Huang, Kai, Zhan Jin, Nobuhiko Nakanii, Tomonao Hosokai, and Masaki Kando. "Experimental demonstration of 7-femtosecond electron timing fluctuation in laser wakefield acceleration." Applied Physics Express 15, no. 3 (2022): 036001. http://dx.doi.org/10.35848/1882-0786/ac5237.

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Abstract We report on an experimental investigation of the jitter of electrons from laser wakefield acceleration. The relative arrival timings of the generated electron bunches were detected via electro-optic spatial decoding on the coherent transition radiation emitted when the electrons pass through a 100 μm thick stainless steel foil. The standard deviation of electron timing was measured to be 7 fs at a position outside the plasma. Preliminary analysis suggested that the electron bunches might have durations of a few tens of femtoseconds. This research demonstrated the potential of laser w

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3

MIZUNO, Koji, Kunioki MIMA, and Shoichi ONO. "Tunable lasers. Free electron laser." Review of Laser Engineering 17, no. 11 (1989): 749–58. http://dx.doi.org/10.2184/lsj.17.11_749.

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4

Joachain, C. J. "Laser-Assisted Electron-Atom Collisions." Laser Chemistry 11, no. 3-4 (1991): 273–77. http://dx.doi.org/10.1155/lc.11.273.

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The theoretical methods which have been developed to analyze laser-assisted electron-atom collisions are reviewed. Firstly, the scattering of an electron by a potential in the presence of a laser field is considered. The analysis is then generalized to laser-assisted collisions of electrons with “real” atoms having an internal structure. Two methods are discussed: a semi-perturbative approach suitable for fast incident electrons and a fully non-perturbative theory—the R-matrix-Floquet method—which is applicable to the case of slow incident electrons. In particular it is shown how the dressing

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5

Shukla, Padma Kant, and Bengt Eliasson. "Localization of intense electromagnetic waves in plasmas." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 366, no. 1871 (2008): 1757–69. http://dx.doi.org/10.1098/rsta.2007.2184.

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We present theoretical and numerical studies of the interaction between relativistically intense laser light and a two-temperature plasma consisting of one relativistically hot and one cold component of electrons. Such plasmas are frequently encountered in intense laser–plasma experiments where collisionless heating via Raman instabilities leads to a high-energetic tail in the electron distribution function. The electromagnetic waves (EMWs) are governed by the Maxwell equations, and the plasma is governed by the relativistic Vlasov and hydrodynamic equations. Owing to the interaction between t

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6

SAKAI, KEI, SHUJI MIYAZAKI, SHIGEO KAWATA, SHOTARO HASUMI, and TAKASHI KIKUCHI. "High-energy-density attosecond electron beam production by intense short-pulse laser with a plasma separator." Laser and Particle Beams 24, no. 2 (2006): 321–27. http://dx.doi.org/10.1017/s026303460606040x.

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An attosecond electron beam generation is studied by an intense short-pulse TEM (1,0) + TEM (0,1)-mode laser with a plasma separator in vacuum. The TEM (1,0) + TEM (0,1)-mode laser has a ring-shaped intensity peak in the radial direction. Electrons are accelerated and compressed near the focus point of the TEM (1,0) + TEM (0,1)-mode laser. However, after the focus point, some electrons move to its deceleration phase of the laser pulse and are decelerated. As a result, a longitudinal velocity deference of electrons generated causes a density lowering. In order to suppress the deceleration and t

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7

Xiang, Ran, Xin Yu Tan, and Hui Li Wei. "Influence of Electron-Phonon Coupling Coefficient on Properties in Femtosecond Laser Ablation." Materials Science Forum 814 (March 2015): 144–49. http://dx.doi.org/10.4028/www.scientific.net/msf.814.144.

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Thermodynamics effects generated by femtosecond laser ablation are very important. In this work, the numerical simulation of high-energy femtosecond laser ablation especially the electro-phonon coupling coefficient influence of high-energy femtosecond laser ablation on metal target was studied. A new two-temperature model (TTM) which considered the effects of electron density of states (DOS) on electron-phonon coupling coefficient was first established, then the temperature evolvement for electron and lattice in different electro-phonon coupling coefficient G, and the effect of G on electron t

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8

Singh, K. P., D. N. Gupta, and V. Sajal. "Electron energy enhancement by a circularly polarized laser pulse in vacuum." Laser and Particle Beams 27, no. 4 (2009): 635–42. http://dx.doi.org/10.1017/s0263034609990474.

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AbstractEnergy enhancement by a circularly polarized laser pulse during acceleration of the electrons by a Gaussian laser pulse has been investigated. The electrons close to the temporal peak of the laser pulse show strong initial phase dependence for a linearly polarized laser pulse. The energy gained by the electrons close to the rising edge of the pulse does not show initial phase dependence for either linearly- or circularly-polarized laser pulse. The maximum energy of the electrons gets enhanced for a circularly polarized in comparison to a linearly polarized laser pulse due to axial symm

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9

Parmigiani, Fulvio, and Daniel Ratner. "Seeded Free-Electron Lasers and Free-Electron Laser Applications." Synchrotron Radiation News 29, no. 3 (2016): 2–3. http://dx.doi.org/10.1080/08940886.2016.1174035.

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10

Melikian, Robert. "Acceleration of electrons by high intensity laser radiation in a magnetic field." Laser and Particle Beams 32, no. 2 (2014): 205–10. http://dx.doi.org/10.1017/s026303461300092x.

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AbstractWe consider the acceleration of electrons in vacuum by means of the circularly-polirized electromagnetic wave, propagating along a magnetic field. We show that the electron energy growth, when using ultra-short and ultra-intense laser pulses (1 ps, 1018 W/cm2, CO2 laser) in the presence of a magnetic field, may reach up to the value 2,1 GeV. The growth of the electron energy is shown to increase proportionally with the increase of the laser intensity and the initial energy of the electron. We find that for some direction of polarization of the wave, the acceleration of electrons does n

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11

Keefer, Dennis, Ahad Sedghinasab, Newton Wright, and Quan Zhang. "Laser propulsion using free electron lasers." AIAA Journal 30, no. 10 (1992): 2478–82. http://dx.doi.org/10.2514/3.11250.

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12

Luan, Shixia, Wei Yu, Masakatsu Murakami, et al. "Time evolution of solid-density plasma during and after irradiation by a short, intense laser pulse." Laser and Particle Beams 30, no. 3 (2012): 407–14. http://dx.doi.org/10.1017/s0263034612000249.

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AbstractA two-dimensional theoretical model for the evolution of solid-density plasma irradiated by short, intense laser pulse is introduced. The electrons near the target surface are pushed inward by the radiation pressure, leading to a receding electron density jump where the laser is reflected. The electrostatic field of the resulting charge separation eventually balances the radiation pressure at the laser peak. After that the charge separation field becomes dominant. It accelerates and compresses the ions that are left behind until they merge with the compressed electrons, resulting in a

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13

Karmakar, A., and A. Pukhov. "Collimated attosecond GeV electron bunches from ionization of high-Z material by radially polarized ultra-relativistic laser pulses." Laser and Particle Beams 25, no. 3 (2007): 371–77. http://dx.doi.org/10.1017/s0263034607000249.

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Three dimensional Particle-in-Cell (3D-PIC) simulations of electron acceleration in vacuum with radially polarized ultra-intense laser beams have been performed. It is shown that single-cycle laser pulses efficiently accelerate a single attosecond electron bunch to GeV energies. When multi-cycle laser pulses are used, one has to employ ionization of high-Z materials to inject electrons in the accelerating phase at the laser pulse maximum. In this case, a train of highly collimated attosecond electron bunches with a quasi-monoenergetic spectra is produced. A comparison with electron acceleratio

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14

Zhou, Shiyi, Zhijun Zhang, Chuliang Zhou, Zhongpeng Li, Ye Tian, and Jiansheng Liu. "A high-energy electron density modulator driven by an intense laser standing wave." Laser and Particle Beams 37, no. 2 (2019): 197–202. http://dx.doi.org/10.1017/s0263034619000338.

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AbstractA high energy electron density modulator from a high-intensity laser standing wave field is studied herein by investigating the ultrafast motion of electrons in the field. Electrons converge at the electric field antinodes, and the discrete electron density peaks modulated by the field located at the corresponding laser phases of kx = nπ, (n = 0, 1, 2, …), that is, the modulation period is 1/2 the wavelength of the individual laser. We also discussed the influence of the laser parameters such as laser intensity and waist size on the beam modulator. It is shown that a long interaction l

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15

Nicks, Bradley Scott, Ernesto Barraza-Valdez, Sahel Hakimi, et al. "High-Density Dynamics of Laser Wakefield Acceleration from Gas Plasmas to Nanotubes." Photonics 8, no. 6 (2021): 216. http://dx.doi.org/10.3390/photonics8060216.

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The electron dynamics of laser wakefield acceleration (LWFA) is examined in the high-density regime using particle-in-cell simulations. These simulations model the electron source as a target of carbon nanotubes. Carbon nanotubes readily allow access to near-critical densities and may have other advantageous properties for potential medical applications of electron acceleration. In the near-critical density regime, electrons are accelerated by the ponderomotive force followed by the electron sheath formation, resulting in a flow of bulk electrons. This behavior represents a qualitatively disti

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16

Barzegar, S., M. Sedaghat, and A. R. Niknam. "Controlled electron injection into beam driven plasma wakefield accelerators employing a co-propagating laser pulse." Plasma Physics and Controlled Fusion 63, no. 12 (2021): 125016. http://dx.doi.org/10.1088/1361-6587/ac2e42.

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Abstract A novel technique for generating high current electron bunches in electron beam driven plasma wakefield accelerators (PWFAs) is suggested based on co-propagation of an electron beam and a laser pulse. It is observed that propagation of a laser pulse in front of an electron beam driver leads to bubble expansion and consequently electron injection into a PWFA. The acceleration structure is extensively studied in this scheme and the bubble evolution process is discussed. The difference in propagation velocity of the laser pulse and the beam driver in the plasma and variation of electron

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17

LAPPAS, D. G., R. GROBE, and J. H. EBERLY. "IMPORTANCE OF ELECTRON–ELECTRON INTERACTION FOR HARMONIC GENERATION." Journal of Nonlinear Optical Physics & Materials 04, no. 03 (1995): 595–603. http://dx.doi.org/10.1142/s0218863595000252.

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We compute the spectrum of the high-order harmonic radiation that is emitted during the interaction of a short laser pulse with a one-dimensional two-electron system. The flexibility of our numerical approach allows us to determine the relative importance of the e–e interaction for the scattered light by coupling only one of the two electrons to the field. The harmonic emission from each electron can then be determined. The e–e interaction appears to be at least as important as the coupling of one electron to the laser field. The coupling of both electrons to the field enhances the nonlinear r

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18

Liu, Huiya, Ning Kang, Shenlei Zhou, et al. "Emission properties of suprathermal electrons produced by laser–plasma interactions." Laser and Particle Beams 35, no. 4 (2017): 663–69. http://dx.doi.org/10.1017/s0263034617000702.

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AbstractSuprathermal electrons produced by laser–plasma interactions at 0.53-μm laser wavelength have been investigated using 19 electron spectrometers. The targets were 2- and 10-μm-thick Al foils, while the laser average intensities were 2 × 1013 and 7 × 1014 W/cm2. A double temperature distribution was observed in the electron energy spectrum: the lower electron temperature was below 25 keV, whereas the higher was ~50 keV. The angular distribution of the total suprathermal electron energy approximately obeyed the Gaussian distribution, peaking along the k vector of the incident laser beam f

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19

Nicks, B. S., T. Tajima, D. Roa, A. Nečas, and G. Mourou. "Laser-wakefield application to oncology." International Journal of Modern Physics A 34, no. 34 (2019): 1943016. http://dx.doi.org/10.1142/s0217751x19430164.

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Recent developments in fiber lasers and nanomaterials have allowed the possibility of using laser wakefield acceleration (LWFA) as the source of low-energy electron radiation for endoscopic and intraoperative brachytherapy, a technique in which sources of radiation for cancer treatment are brought directly to the affected tissues, avoiding collateral damage to intervening tissues. To this end, the electron dynamics of LWFA is examined in the high-density regime. In the near-critical density regime, electrons are accelerated by the ponderomotive force followed by an electron sheath formation, r

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20

ZHONG Peilin, JIANG Yueqian, ZI Ming, et al. "Laser driven electron acceleration from dual-plane composited targets for space radiation applications." Acta Physica Sinica 74, no. 6 (2025): 0. https://doi.org/10.7498/aps.74.20241639.

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Laser driven electron beam has important application value in the field of space radiation environment simulation. However, due to the shortcomings of poor spectrum tunability and high laser energy of the electron beam generated by laser direct irradiation of high-density solid targets, which limits to its wide application. In this paper, a scheme is proposed to simulate the orbital electron radiation in near-Earth space by using laser driven dual-plane composited target electron acceleration. It is found that the high-density solid target Ⅱ can provide a large number of low energy electrons,

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21

Shi, Yin, David R Blackman, and Alexey Arefiev. "Electron acceleration using twisted laser wavefronts." Plasma Physics and Controlled Fusion 63, no. 12 (2021): 125032. http://dx.doi.org/10.1088/1361-6587/ac318d.

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Abstract Using plasma mirror injection we demonstrate, both analytically and numerically, that a circularly polarized helical laser pulse can accelerate highly collimated dense bunches of electrons to several hundred MeV using currently available laser systems. The circular-polarized helical (Laguerre–Gaussian) beam has a unique field structure where the transverse fields have helix-like wave-fronts which tend to zero on-axis where, at focus, there are large on-axis longitudinal magnetic and electric fields. The acceleration of electrons by this type of laser pulse is analyzed as a function of

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22

Zhang, Yingchao, Xun Shi, Wenjing You, et al. "Coherent modulation of the electron temperature and electron–phonon couplings in a 2D material." Proceedings of the National Academy of Sciences 117, no. 16 (2020): 8788–93. http://dx.doi.org/10.1073/pnas.1917341117.

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Ultrashort light pulses can selectively excite charges, spins, and phonons in materials, providing a powerful approach for manipulating their properties. Here we use femtosecond laser pulses to coherently manipulate the electron and phonon distributions, and their couplings, in the charge-density wave (CDW) material 1T-TaSe2. After exciting the material with a femtosecond pulse, fast spatial smearing of the laser-excited electrons launches a coherent lattice breathing mode, which in turn modulates the electron temperature. This finding is in contrast to all previous observations in multiple ma

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23

Aurand, B., L. Reichwein, K. M. Schwind, et al. "Spatial profile of accelerated electrons from ponderomotive scattering in hydrogen cluster targets." New Journal of Physics 24, no. 3 (2022): 033006. http://dx.doi.org/10.1088/1367-2630/ac53ba.

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Abstract We study the laser-driven acceleration of electrons from overdense hydrogen clusters to energies of up to 13 MeV in laser forward direction and several hundreds of keV in an outer ring-structure. The use of cryogenic hydrogen allows for high repetition-rate operation and examination of the influence of source parameters like temperature and gas flow. The outer ring-structure of accelerated electrons, originating from the interaction, that is robust against the change of laser and target parameters can be observed for low electron densities of ca 3 × 1016 cm−3. For higher electron dens

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24

Pae, Ki Hong, Chul Min Kim, Vishwa Bandhu Pathak, Chang-Mo Ryu, and Chang Hee Nam. "Direct laser acceleration of electrons from a plasma mirror by an intense few-cycle Laguerre–Gaussian laser and its dependence on the carrier-envelope phase." Plasma Physics and Controlled Fusion 64, no. 5 (2022): 055013. http://dx.doi.org/10.1088/1361-6587/ac5a0a.

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Abstract A direct acceleration scheme to generate high-energy, high-charge electron beams with an intense few-cycle Laguerre–Gaussian (LG) laser pulse was investigated using three-dimensional particle-in-cell simulations. In this scheme, an intense LG laser pulse was irradiated onto a solid density plasma slab. When the laser pulse is reflected, electrons on the target front surface are injected into the longitudinal electric field of the laser and accelerated further. We found that the carrier-envelope phase (CEP) of the few-cycle laser pulse plays a key role in the electron injection and acc

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25

Ghotra, Harjit Singh. "Cosh-Gaussian laser pulse influenced electron acceleration in an ion channel." Laser Physics Letters 19, no. 9 (2022): 096002. http://dx.doi.org/10.1088/1612-202x/ac8282.

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Abstract The electron acceleration in a prepared ion channel is studied theoretically by using a radially polarized (RP) cosh-Gaussian (ChG) laser pulse. The peculiar propagation properties of ChG laser cause it to focus early and over a shorter time than a Gaussian laser pulse, making it suitable for accelerating electrons to extremely high energies over a small duration. The electrostatic field formed by an ion channel prevents electrons from escaping the interaction zone due to their transverse oscillations, whereas the decentering parameter of the ChG laser pulse influences electron energy

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26

Vladisavlevici, Iuliana-Mariana, Daniel Vizman та Emmanuel d’Humières. "Laser Driven Electron Acceleration from Near-Critical Density Targets towards the Generation of High Energy γ-Photons". Photonics 9, № 12 (2022): 953. http://dx.doi.org/10.3390/photonics9120953.

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In this paper, we investigate the production of high energy gamma photons at the interaction between an ultra-high intensity laser pulse with an energetic electron beam and with a near-critical density plasma for the laser intensity varying between 1019–1023 W/cm2. In the case of the interaction with an electron beam, and for the highest laser intensities considered, the electrons lose almost all their energy to emit gamma photons. In the interaction with a near-critical density plasma, the electrons are first accelerated by the laser pulse up to GeV energies and further emit high energy radia

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27

Keszei, Ernö, and Jean-Paul Jay-Gerin. "On the role of the parent cation in the dynamics of formation of laser-induced hydrated electrons." Canadian Journal of Chemistry 70, no. 1 (1992): 21–23. http://dx.doi.org/10.1139/v92-004.

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A short account is given of the continuum and molecular descriptions of the formation of hydrated electrons. Starting with a scheme of hydration dynamics of laser-induced electrons that accounts for the formation of hydrated electrons without invoking the "direct" ionization of water, a new model explaining the dynamics of electron hydration in terms of a molecular description is proposed. According to this model, the parent cation plays an active role in the trapping of electrons, deepening electron traps that preexist in the liquid before excitation. Consequences of this description to the t

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Sawada, H., T. Yabuuchi, N. Higashi, et al. "Ultrafast time-resolved 2D imaging of laser-driven fast electron transport in solid density matter using an x-ray free electron laser." Review of Scientific Instruments 94, no. 3 (2023): 033511. http://dx.doi.org/10.1063/5.0130953.

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High-power, short-pulse laser-driven fast electrons can rapidly heat and ionize a high-density target before it hydrodynamically expands. The transport of such electrons within a solid target has been studied using two-dimensional (2D) imaging of electron-induced Kα radiation. However, it is currently limited to no or picosecond scale temporal resolutions. Here, we demonstrate femtosecond time-resolved 2D imaging of fast electron transport in a solid copper foil using the SACLA x-ray free electron laser (XFEL). An unfocused collimated x-ray beam produced transmission images with sub-micron and

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MALKA, V., A. F. LIFSCHITZ, J. FAURE, and Y. GLINEC. "GeV MONOENERGETIC ELECTRON BEAM WITH LASER PLASMA ACCELERATOR." International Journal of Modern Physics B 21, no. 03n04 (2007): 277–86. http://dx.doi.org/10.1142/s0217979207042057.

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Laser plasma accelerators produce today ultra short, quasi-monoenergetic and collimated electron beams with potential applications in material science, chemistry and medicine. The laser plasma accelerator used to produce such an electron beam is presented. The design of a laser based accelerator designed to produce more energetic electron beams with a narrow relative energy spread is also proposed here. This compact approach should permit a miniaturization and cost reduction of future accelerators and associated X-Free Electrons Lasers (XFEL).

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Pustovalov, Victor K. "Multi-temperature modeling of femtosecond laser pulse on metallic nanoparticles accounting for the temperature dependences of the parameters." Nanotechnology and Precision Engineering 5, no. 4 (2022): 045001. http://dx.doi.org/10.1063/10.0013776.

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This review considers the fundamental dynamical processes of metal nanoparticles during and after the impact of a femtosecond laser pulse on a nanoparticle, including the absorption of photons. Understanding the sequence of events after photon absorption and their timescales is important for many applications of nanoparticles. Various processes are discussed, starting with optical absorption by electrons, proceeding through the relaxation of the electrons due to electron–electron scattering and electron–phonon coupling, and ending with the dissipation of the nanoparticle energy into the enviro

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Long, Cheng. "Gamma Photons and electron-pairs Generation estimation for collision of PW-class Laser and electron beams." Highlights in Science, Engineering and Technology 38 (March 16, 2023): 444–49. http://dx.doi.org/10.54097/hset.v38i.5857.

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After the proposal of the concept of CPA techniques, the laser intensity has boosted dramatically since then. As the focusing intensity of the laser beam reaches the order above 1023 W/cm2 for multiple PW laser facilities, the laser material interaction enters the QED regime, where the gamma photons generation and electrons-positron pairs generation can be realized. This paper provides an overview of the current research in the field of electrodynamics about laser intensities and electron generation. Basic theories of the generation of e and e- pair and photons are introduced. The history of t

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Li, Kai, and Wen Yi Huo. "The nonlocal electron heat transport under the non-Maxwellian distribution in laser plasmas and its influence on laser ablation." Physics of Plasmas 30, no. 4 (2023): 042702. http://dx.doi.org/10.1063/5.0130888.

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The electron heat transport plays an important role in laser driven inertial confinement fusion. For the plasmas created by intense laser, the traditional Spitzer–Härm theory cannot accurately describe the electron heat transport process mainly due to two physical effects. First, the electron distribution function would significantly differ from the Maxwellian distribution because of the inverse bremsstrahlung heating. Second, the long mean free paths of heat carrying electrons relative to the temperature scale length indicate that the electron heat flux has the nonlocal feature. In 2020, we h

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Braiman, Guy, Ori Reinhardt, Chen Mechel, Omer Levi, and Ido Kaminer. "The Synthetic Hilbert Space of Laser-Driven Free-Electrons." Quantum 7 (January 3, 2023): 888. http://dx.doi.org/10.22331/q-2023-01-03-888.

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Recent advances in laser interactions with coherent free electrons have enabled to shape the electron&apos;s quantum state. Each electron becomes a superposition of energy levels on an infinite quantized ladder, shown to contain up to thousands of energy levels. We propose to utilize the quantum nature of such laser-driven free electrons as a "synthetic Hilbert space" in which we construct and control qudits (quantum digits). The question that motivates our work is what qudit states can be accessed using electron-laser interactions, and whether it is possible to implement any arbitrary qua

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MORENO-MARÍN, JUAN CARLOS, ISABEL ABRIL, RAFAEL GARCIA-MOLINA, and NÉSTOR R. ARISTA. "Inverse mean free path of swift electrons in metals irradiated by a strong laser field." Laser and Particle Beams 21, no. 1 (2003): 91–96. http://dx.doi.org/10.1017/s0263034603211174.

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We analyze the influence of a high-intensity laser field in the inverse mean free path of electrons moving through a degenerate electron gas. Our calculations are based on the random-phase-approximation formalism, in terms of the dielectric function of the medium, where the effects of the laser field are included in the dynamical response. The main effects on the slowing down of the electrons are studied as a function of the intensity and frequency of the laser field, as well as a function of the projectile velocity. A modification of the electron inverse mean free path for plasmon and electro

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CHEN, HUI, and SCOTT C. WILKS. "Evidence of enhanced effective hot electron temperatures in ultraintense laser-solid interactions due to reflexing." Laser and Particle Beams 23, no. 4 (2005): 411–16. http://dx.doi.org/10.1017/s0263034605050585.

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It is shown that the effective hot electron temperature, Thot, associated with the energetic electrons produced during the interaction of an ultra-intense laser with thin solid targets is dependent on the thickness of the target. We report the first direct experimental observations of electron energy spectra obtained from laser-solid interactions that indicates the reflexing of electrons in thin targets results in higher electron temperatures than those obtained in thick target interactions. This can occur for targets whose thickness, xt, is less than about half the range of an electron at the

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Huang, Kai, Hideyuki Kotaki, Michiaki Mori, Yukio Hayashi, Nobuhiko Nakanii, and Masaki Kando. "Single-Shot Electro-Optic Sampling on the Temporal Structure of Laser Wakefield Accelerated Electrons." Crystals 10, no. 8 (2020): 640. http://dx.doi.org/10.3390/cryst10080640.

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Particle acceleration driven by a high power Ti: sapphire laser has invoked great interest worldwide because of the ultrahigh acceleration gradient. For the aspect of electron acceleration, electron beams with energies over GeV have been generated using the laser wakefield acceleration mechanism. For the optimization of the electron generation process, real-time electron parameter monitors are necessary. One of the key parameters of a high energy particle beam is the temporal distribution, which is closely related with the timing resolution in a pump-probe application. Here, we introduced the

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CHAUHAN, P. K., S. T. MAHMOUD, R. P. SHARMA, and H. D. PANDEY. "Effect of laser ripple on the beat wave excitation and particle acceleration." Journal of Plasma Physics 73, no. 1 (2007): 117–30. http://dx.doi.org/10.1017/s002237780600465x.

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Abstract.This paper presents the effect of ripple on the plasma wave excitation process and acceleration of electrons in a laser produced plasma. The plasma wave is generated by the beating of two coaxial lasers of frequencies ω1 and ω2, such that ω1-ω2≅ωp. One of the main laser beams also has intensity spikes. The nonlinearity due to the relativistic mass variation depends not only on the intensity of one laser beam but also on the second laser beam. Therefore the behavior of the first laser beam affects the second laser beam, hence cross-focusing takes place. Owing to the interaction of ripp

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Magesh Kumar, K. K., and V. K. Tripathi. "Laser wakefield bubble regime acceleration of electrons in a preformed non uniform plasma channel." Laser and Particle Beams 30, no. 4 (2012): 575–82. http://dx.doi.org/10.1017/s0263034612000547.

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AbstractA model of bubble regime electron acceleration by an intense laser pulse in non uniform plasma channel is developed. The plasma electrons at the front of the pulse and slightly off the laser axis in the plasma channel, experience axial and radial ponderomotive and space charge forces, creating an electron evacuated non uniform ion bubble. The expelled electrons travel along the surface of the bubble and reach the stagnation point, forming an electron sphere of radius re. The electrons of this sphere are pulled into the ion bubble and are accelerated to high energies. The Lorentz booste

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Poole, M. W. "Laser physics: Advances in free-electron lasers." Nature 316, no. 6026 (1985): 300. http://dx.doi.org/10.1038/316300a0.

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Silva, Luis O., F. Fiúza, R. A. Fonseca, et al. "Laser electron acceleration with 10 PW lasers." Comptes Rendus Physique 10, no. 2-3 (2009): 167–75. http://dx.doi.org/10.1016/j.crhy.2009.03.012.

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Ansari, A., M. S. Patel, S. P. Mishra, Arvind Kumar, Asheel Kumar, and A. Varma. "Excitation of large-amplitude electron plasma wave by counterpropagation of two laser beams in spherical nanoparticles." Laser Physics 35, no. 4 (2025): 045402. https://doi.org/10.1088/1555-6611/adc559.

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Abstract The counterpropagation interaction of two different laser beams with a spherical nanoparticle medium is used to excite a large-amplitude electron plasma wave. The two laser beams having slightly different frequencies cause beat wave generation at the beat wave number k = k 1 + k 2 and beat wave frequency ω = ω 1 − ω 2 . The high-power laser beam radiation ionizes the atoms of the nanoparticles and subsequently converts them into plasma plume balls. The gradient in the field of each laser beam is considered to be responsible for the generation of a nonlinear ponderomotive force to the

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Kargarian, A., K. Hajisharifi, and H. Mehdian. "Laser-driven electron acceleration in hydrogen pair-ion plasma containing electron impurities." Laser and Particle Beams 36, no. 2 (2018): 203–9. http://dx.doi.org/10.1017/s0263034618000174.

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AbstractIn this paper, the intense laser heating of hydrogen pair-ion plasma with and without electron impurities through investigation of related nonlinear phenomena has been studied in detail, using a developed relativistic particle-in-cell simulation code. It is shown that the presence of electron impurities has an essential role in the behavior of nonlinear phenomena contributing to the laser absorption including phase mixing, wave breaking, and stimulated scatterings. The inclusion of electron into an initial pure hydrogen plasma not only causes the occurrence of stimulated scattering con

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Mima, Kunioki, and Kazuo Imasaki. "Free Electron Laser." Kakuyūgō kenkyū 59, no. 5 (1988): 311–36. http://dx.doi.org/10.1585/jspf1958.59.311.

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Imasaki, Kazuo. "Free Electron Laser." JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE 9, no. 3 (1988): 17–20. http://dx.doi.org/10.2530/jslsm1980.9.3_17.

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Singer, Sidney. "Free-Electron Laser." Science 255, no. 5050 (1992): 1335. http://dx.doi.org/10.1126/science.255.5050.1335.c.

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MIMA, KUNIOKI. "Free electron laser." Review of Laser Engineering 21, no. 1 (1993): 119–23. http://dx.doi.org/10.2184/lsj.21.119.

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SINGER, S. "Free-Electron Laser." Science 255, no. 5050 (1992): 1335. http://dx.doi.org/10.1126/science.255.5050.1335-b.

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MIMA, Kunioki. "Free electron laser." Review of Laser Engineering 15, no. 6 (1987): 375–80. http://dx.doi.org/10.2184/lsj.15.375.

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Bostanjoglo, O., F. Heinricht, and F. Wünsch. "Performance of A Laser-Pulsed Thermal Electron Gun." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 1 (1990): 124–25. http://dx.doi.org/10.1017/s0424820100179373.

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High-speed electron microscopy strongly demands a high-brightness electron gun in order to increase the number of image forming electrons. A few years ago, a laser-pulsed high-brightness electron gun was introduced. Fig.1 shows the experimental set-up, A standard triode system was supplemented with a Nd:YAG laser, focussing optics and a modified anode, which incorporates the laser deflection mirror. The frequency doubled laser pulse (τ =5 ns, λ = 532 nm) is focused through a window onto the tip of the tungsten hairpin emitter. The laser treated area (≈ 100 μm diameter) is heated well above the

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Singh, Mamta, and Devki Nandan Gupta. "Optical second-and third harmonic radiation generation in a laser-produced plasma." Laser Physics 32, no. 8 (2022): 085001. http://dx.doi.org/10.1088/1555-6611/ac787a.

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Abstract The harmonic generation of a laser in gases is strictly dependent on the ionization dynamics. In this work, we study optical second and third harmonic radiation generation of a laser in an ionizing gas incorporating the electron-ion recombination effects. Neutral gas is irradiated by an intense laser field which generates free-electrons by tunnel ionization. If the laser pulse is long enough, the electron-ion recombination effects need to be accounted for laser dynamics in plasmas. The laser is assumed to have intensity near the tunnel ionization threshold so as to get plasma density

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