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Journal articles on the topic 'Plasma Raman instability'

Author: Grafiati

Published: 3 June 2025

Last updated: 1 August 2025

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1

Baldis, H. A., D. M. Villeneuve, and C. J. Walsh. "Plasma waves in laser fusion plasmas." Canadian Journal of Physics 64, no. 8 (1986): 961–68. http://dx.doi.org/10.1139/p86-165.

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This paper presents a review of plasma wave generation in laser-produced plasmas. A general review is given of stimulated scattering phenomena and the use of Thomson scattering techniques to diagnose waves in plasma. Two examples of the application of such methods are given: one is the simultaneous measurement of plasma and ion waves produced by the two-plasmon decay instability, the other the observation of plasma waves generated by stimulated Raman scattering.

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2

Mašek, M., and K. Rohlena. "Kinetics of the Raman scattering in a laser corona using a transform method." Laser and Particle Beams 35, no. 4 (2017): 687–98. http://dx.doi.org/10.1017/s0263034617000696.

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AbstractThis paper is an extension of our previous paper (Mašek and Rohlena, 2015), where we applied a transform method for the solution of Vlasov–Maxwell set of equations in a one-dimensional geometry to describe the Raman backscattering of the heating ns laser wave in the external corona of the generated laser plasma in a strongly non-linear regime. The method is stabilized by a simplified Fokker–Planck collision term, which, in turn, is used for a study of the influence of collisional and collisionless damping mechanisms of the daughter electron plasma wave (EPW) on the instability developm

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3

Bonnaud, G. "Ion mobility influence on stimulated Raman scattering in homogeneous laser-irradiated plasma." Laser and Particle Beams 5, no. 1 (1987): 101–14. http://dx.doi.org/10.1017/s0263034600002524.

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1½ D computer simulations have been performed to illustrate the influence of ion dynamics on stimulated Raman scattering in laser irradiated plasmas. A flat density profile has been used. Backward and forward scatter and heated electron distribution have been studied as a function of ion mass and ion temperature. The results show clearly that the lighter the ions, the more inhibited the Raman scatter and associated fast electron production. Futhermore, when ions are cold enough to allow Brillouin scattering release, Raman scatter, as well as associated suprathermal electrons is even more reduc

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4

Shvets, G., N. J. Fisch, and J. ‐M Rax. "Relativistic Raman instability shifted by half‐plasma frequency." Physics of Plasmas 3, no. 3 (1996): 1109–12. http://dx.doi.org/10.1063/1.871766.

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5

Mašek, M., and K. Rohlena. "Kinetics of the Raman instability in laser plasma." Czechoslovak Journal of Physics 55, no. 8 (2005): 973–88. http://dx.doi.org/10.1007/s10582-005-0097-8.

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6

Simon, Albert. "Raman scattering." Canadian Journal of Physics 64, no. 8 (1986): 956–60. http://dx.doi.org/10.1139/p86-164.

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Observations of Raman scattered light from inhomogeneous laser-produced plasma have shown characteristics quite different from the simple predictions for the stimulated Raman scattering instability. An alternative explanation in terms of enhanced scattering, produced by bursts of hot electrons arising at the quarter-critical or critical surface, is described. Comparison is made between the predictions of this theory and four experiments.

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7

Babu, Sanjay, Asheel Kumar, Ram Jeet, Arvind Kumar, and Ashish Varma. "Stimulated Raman Scattering of X-Mode Laser in a Plasma Channel." Laser and Particle Beams 2021 (May 4, 2021): 1–10. http://dx.doi.org/10.1155/2021/9919467.

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Stimulated Raman forward scattering (SRFS) of an intense X-mode laser pump in a preformed parabolic plasma density profile is investigated. The laser pump excites a plasma wave and one/two electromagnetic sideband waves. In Raman forward scattering, the growth rate of the parametric instability scales as two-third powers of the pump amplitude and increases linearly with cyclotron frequency.

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8

Jia-Tai, Zhang. "Stimulated Raman scattering instability in partially ionized laser-plasma." Chinese Physics 14, no. 1 (2004): 169–71. http://dx.doi.org/10.1088/1009-1963/14/1/031.

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9

ŠKORIĆ, MILOŠ M., LJUBOMIR NIKOLIĆ, and SEIJI ISHIGURO. "Self-organization and control in stimulated Raman backscattering." Journal of Plasma Physics 79, no. 6 (2013): 1003–6. http://dx.doi.org/10.1017/s0022377813001189.

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AbstractA stimulated Raman scattering (SRS) on electron plasma waves in underdense plasmas is of a big concern in laser fusion due to an energy loss and target preheating. Complex features of large Backward-SRS (BRS) in experiments and simulations with laser fusion targets are found. Recently, to reach ultra-high intensities at multi-exawatts and beyond, relevant to high-energy physics, Raman amplification based on BRS was proposed; still, with high sensitivity and a narrow operational window. Firstly, we revisit a standard three-coupled mode model of BRS to show that the condition for an abso

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10

Škorić, Miloš M. "On a theory of stimulated scattering in laser plasmas." Laser and Particle Beams 5, no. 1 (1987): 83–88. http://dx.doi.org/10.1017/s0263034600002500.

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A linear parametric theory of laser light instabilities including decay, stimulated Raman and Brillouin scattering, etc. is currently well developed. However, attention is drawn to a novel laser light instability against parametric excitation of magneto-static fluctuations. In a collisionless plasma regime, magneto-static fields are driven by the ponderomotive electron magnetization current. Generally, two types of magneto-static instabilities exist: magneto-modulational instability and stimulated magneto-static scattering instability. Growth rates are calculated which indicate the possible im

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11

GUERRA, R., J. T. MENDONÇA, and P. K. SHUKLA. "Stimulated Raman, Brillouin and dust–Brillouin scattering in dusty plasmas." Journal of Plasma Physics 59, no. 2 (1998): 343–65. http://dx.doi.org/10.1017/s002237789700620x.

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Stimulated scatterings of large-amplitude electromagnetic waves by Langmuir, dust–ion-acoustic and dust-acoustic waves in unmagnetized dusty plasmas are investigated by employing the standard methods of nonlinear three-wave interactions and by incorporating the effects of grain-charge fluctuations, collisions of electrons and ions with dust grains, the plasma drag on a dust grain (for the case of the dust-acoustic wave) and the dependence of the average dust charge on the dusty plasma parameters. Distinction is made between the charging collisions, when electrons and ions are accumulated onto

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12

Cairns, Iver H. "Third and higher harmonic plasma emission due to Raman scattering." Journal of Plasma Physics 38, no. 2 (1987): 199–208. http://dx.doi.org/10.1017/s0022377800012514.

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The theory for third and higher harmonic plasma emission by the weak turbulence (or random phase) process L + T′→T (where L denotes a Langmuir wave, and T and T′ denote transverse waves) is developed. Kinematic constraints on the characteristics and growth lengths of waves participating in the wave processes are identified. The cases of L waves produced either directly by a streaming instability, or by the decay L→L′+S (S is an ion sound wave) of L waves generated by a streaming instability, are considered. Limits on the brightness temperature of the radiation are determined, and expressions f

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13

Zhou, Y. Z., C. Y. Zheng, Z. J. Liu, and L. H. Cao. "Weibel instability induced by kinetic stimulated Raman scattering in unmagnetized and magnetized plasmas." Plasma Physics and Controlled Fusion 64, no. 4 (2022): 045009. http://dx.doi.org/10.1088/1361-6587/ac4bcf.

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Abstract The kinetic stimulated Raman scattering (SRS) is found to result in significant Weibel-generated magnetic fields via 2D particle-in-cell simulations. During the high-intensity laser pulse, the daughter electron plasma waves of SRS heat the electrons effectively and lead to anisotropy in the velocity space. This anisotropy results in the development of a quasi-static magnetic field near the laser speckle, and the growth rate has been discussed. The results show that the kinetic SRS can lead to an averaged magnetic field of more than 10 T, which can be an important magnetic field source

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14

Singh, Ranjeet, and V. K. Tripathi. "Stimulated Raman scattering coupled to decay instability in a plasma channel." Physics of Plasmas 19, no. 1 (2012): 012109. http://dx.doi.org/10.1063/1.3675851.

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15

Mašek, M., and K. Rohlena. "Novel features of non-linear Raman instability in a laser plasma." European Physical Journal D 56, no. 1 (2009): 79–90. http://dx.doi.org/10.1140/epjd/e2009-00271-9.

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16

Ghanshyam. "Simulated Raman scattering instability of laser beam in a plasma channel." Indian Journal of Physics 86, no. 8 (2012): 731–38. http://dx.doi.org/10.1007/s12648-012-0120-4.

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17

Offenberger, A. A., J. Santiago, M. Fujita, R. Fedosejevs, and W. Rozmus. "Stimulated scattering from laser produced plasma." Laser and Particle Beams 8, no. 1-2 (1990): 153–71. http://dx.doi.org/10.1017/s0263034600007916.

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Stimulated Brillouin and Raman scattering are of considerable interest because of their importance to basic nonlinear plasma physics phenomena and to laser-driven inertial confinement fusion. Induced scattering can be substantial for high intensity (I), long wavelength (λ) lasers because the instability growth rates depend exponentially on Jλ2, and also for short wavelength, long scalelength (L) laser/plasma interaction because of nearly homogeneous or large convective gain conditions. Experimental results from both KrF and CO2 laser/plasma interaction studies are presented to illustrate impor

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18

Lin, Zunqi, Anle Lei, Wei Fan, Shenlei Zhou, and Li Wang. "An important effect of filamentation instability on laser fusion physical processes." High Power Laser Science and Engineering 1, no. 3-4 (2013): 110–22. http://dx.doi.org/10.1017/hpl.2014.1.

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AbstractThe process of high power laser interaction with the large scale length corona plasma produced by the leading edge of the laser pulse has been investigated. Early experimental results are re-analyzed and conclusions drawn. In particular, studies of the close connection of unstable filamentation instability with – mainly – two-plasmon decay and – partly – stimulated Raman scattering, stimulated Brillouin scattering, and resonance absorption are carried out in this paper. The positive and negative effects of filamentation instability are also discussed.

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19

Rozina, Ch, N. Maryam, and Z. Iqbal. "Raman Scattering Instability of Transverse Electromagnetic Waves in Degenerate Spin Polarized Plasma." Plasma Physics Reports 47, no. 1 (2021): 54–59. http://dx.doi.org/10.1134/s1063780x21010128.

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20

Zhao, X., X. H. Yuan, J. Zheng, et al. "An angular-resolved scattered-light diagnostic for laser-plasma instability studies." Review of Scientific Instruments 93, no. 5 (2022): 053505. http://dx.doi.org/10.1063/5.0090841.

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We developed an angular-resolved scattered-light diagnostic station (ARSDS) to extend the study of laser-plasma instabilities (LPIs) by simultaneously diagnosing their features at different angles in a single shot. The ARSDS angularly samples the scattered light using an array of fibers with flexible setups. The collected light is detected with an imaging spectrometer, a streaked spectrometer, or a fiber-optic spectrometer to provide time-integrated/time-resolved spectral information. The ARSDS was implemented at Shenguang-II Upgrade laser facility for the double-cone ignition campaigns. Preli

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21

Kline, J. L., D. S. Montgomery, C. Rousseaux, et al. "Investigation of stimulated Raman scattering using a short-pulse diffraction limited laser beam near the instability threshold." Laser and Particle Beams 27, no. 1 (2009): 185–90. http://dx.doi.org/10.1017/s0263034609000251.

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AbstractShort pulse laser plasma interaction experiments using diffraction limited beams provide an excellent platform to investigate the fundamental physics of stimulated Raman scattering. Detailed understanding of these laser plasma instabilities impacts the current inertial confinement fusion ignition designs and could potentially impact fast ignition when higher energy lasers are used with longer pulse durations (>1 kJ and >1 ps). Using short laser pulses, experiments can be modeled over the entire interaction time of the laser using particle-in-cell codes to validate our understandi

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22

Hao, L., Z. J. Liu, X. Y. Hu, and C. Y. Zheng. "Competition between the stimulated Raman and Brillouin scattering under the strong damping condition." Laser and Particle Beams 31, no. 2 (2013): 203–9. http://dx.doi.org/10.1017/s0263034613000074.

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AbstractIn this paper, we discuss the competition between the stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) instabilities under the strong damping condition. Based on a five-wave interaction model, relations of the stationary backscattering reflectivity between SRS and SBS are deduced in the case of homogeneous plasmas. Developments of the two coexistent instabilities are simulated with different parameters. The density and the temperature of plasma are found to be important in determining which instability dominates the backscattering in the regime of competition

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23

Paknezhad, Alireza, and Davoud Dorranian. "Nonlinear backward Raman scattering in the short laser pulse interaction with a cold underdense transversely magnetized plasma." Laser and Particle Beams 29, no. 3 (2011): 373–80. http://dx.doi.org/10.1017/s0263034611000474.

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AbstractRaman backward scattering is investigated in the interaction of linearly polarized ultra short laser pulse with a homogenous cold underdense magnetized plasma by taking into account the relativistic effect and the effect of nonlinearity up to third order. The plasma is embedded in a uniform magnetic field perpendicular to both of propagation direction and electric vector of the radiation field. Nonlinear wave equation is set up and differential equations, which model the instability, are derived. Using of the Fourier transformation, analytical solutions are obtained for a set of physic

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24

Zhao, Yao, Lu-Le Yu, Jun Zheng, et al. "Effects of large laser bandwidth on stimulated Raman scattering instability in underdense plasma." Physics of Plasmas 22, no. 5 (2015): 052119. http://dx.doi.org/10.1063/1.4921659.

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25

Michel, D. T., S. Depierreux, V. Tassin, C. Stenz, M. Chateau, and C. Labaune. "Saturation of Raman instability in gas jet plasma in LULI 2000 laser experiments." Journal of Physics: Conference Series 244, no. 2 (2010): 022022. http://dx.doi.org/10.1088/1742-6596/244/2/022022.

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26

Yue, Dong-Ning, Min Chen, Yao Zhao, et al. "Post-solitons and electron vortices generated by femtosecond intense laser interacting with uniform near-critical-density plasmas." Chinese Physics B 31, no. 4 (2022): 045205. http://dx.doi.org/10.1088/1674-1056/ac46c5.

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Generation of nonlinear structures, such as stimulated Raman side scattering waves, post-solitons and electron vortices, during ultra-short intense laser pulse transportation in near-critical-density (NCD) plasmas is studied by using multi-dimensional particle-in-cell (PIC) simulations. In two-dimensional geometries, both P- and S-polarized laser pulses are used to drive these nonlinear structures and to check the polarization effects on them. In the S-polarized case, the scattered waves can be captured by surrounding plasmas leading to the generation of post-solitons, while the main pulse exc

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27

Ghosh, S., and S. Dixit. "Stimulated Raman Scattering and Raman Instability of an Intense Helicon Wave in Longitudinally Magnetized n-Type Piezoelectric Semiconducting Plasma." physica status solidi (b) 131, no. 1 (1985): 255–65. http://dx.doi.org/10.1002/pssb.2221310127.

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28

McKinstrie, C. J., and A. Simon. "Nonlinear saturation of the absolute stimulated Raman scattering instability in a finite collisional plasma." Physics of Fluids 29, no. 6 (1986): 1959. http://dx.doi.org/10.1063/1.865623.

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29

Wang, Y. X., Q. Wang, C. Y. Zheng, et al. "Saturation of stimulated Raman backscattering due to beam plasma instability induced by trapped electrons." Plasma Physics and Controlled Fusion 62, no. 7 (2020): 075009. http://dx.doi.org/10.1088/1361-6587/ab8f10.

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30

BÉGUÉ, M. L., A. GHIZZO, P. BERTRAND, E. SONNENDRÜCKER, and O. COULAUD. "Two-dimensional semi-Lagrangian Vlasov simulations of laser–plasma interaction in the relativistic regime." Journal of Plasma Physics 62, no. 4 (1999): 367–88. http://dx.doi.org/10.1017/s0022377899008065.

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A semi-Lagrangian two-dimensional fully relativistic Vlasov code for multicomputer environments is developed to study trapped-particle dynamics in phase space induced by relativistic modulational and Raman instabilities. Attention is focused on the efficiency properties of the numerical scheme, which allows a very fine description of particle dynamics in phase space. Vlasov simulations show the appearance of coherent vortex structures as a result of the nonlinear saturation mechanism of the relativistic modulational instability. Growth rates are computed and found to be in good agreement with

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31

SHARMA, B. S., and N. K. JAIMAN. "Non-local theory of a transverse magnetic mode pumped free electron laser." Journal of Plasma Physics 74, no. 5 (2008): 585–94. http://dx.doi.org/10.1017/s0022377808007459.

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AbstractA non-local theory is used to study the effects of the corrugation parameter ε of a plasma-filled slow wave structure, the cyclotron frequency of a pumped magnetic field Ω and the relativistic gamma factor γ0 on the instability growth Γ of a free electron laser in the presence of an external finite axial magnetic field. The dispersion relation is derived and the growth rate is formulated in the Raman regime. The growth rate is approximately proportional to ε. There is a considerable decrease in the instability growth when the cyclotron frequency is close to ω0. The growth rate approxim

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32

Sary, G., and L. Gremillet. "Hybrid Zakharov-kinetic simulation of nonlinear stimulated Raman scattering." Physics of Plasmas 29, no. 7 (2022): 072103. http://dx.doi.org/10.1063/5.0090211.

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We present a novel 2D reduced numerical model for stimulated Raman scattering (SRS) in laser fusion plasmas in which envelope equations for the electromagnetic fields are coupled to a hybrid description of the electron species. Specifically, the electron distribution is split between a bulk part described by a Zakharov-like linear model and a kinetic tail discretized using a particle-in-cell-like (PIC) scheme. By avoiding to sample the bulk-electron distribution, this approach greatly reduces the numerical cost of SRS simulations compared with PIC codes, while still being able to describe the

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33

Malka, V., A. Modena, Z. Najmudin, et al. "Second harmonic generation and its interaction with relativistic plasma waves driven by forward Raman instability in underdense plasmas." Physics of Plasmas 4, no. 4 (1997): 1127–31. http://dx.doi.org/10.1063/1.872201.

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34

TSUNG, F., S. YA TOCHITSKY, D. J. HABERBERGER, W. B. MORI, and C. JOSHI. "CO2 Laser acceleration of forward directed MeV proton beams in a gas target at critical plasma density." Journal of Plasma Physics 78, no. 4 (2012): 373–82. http://dx.doi.org/10.1017/s0022377812000189.

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AbstractThe generation of 1–5 MeV protons from the interaction of a 3 ps TW CO2 laser pulse with a gas target with a peak density around the critical plasma density has been studied by 2D particle-in-cell simulations. The proton acceleration in the preformed plasma with a symmetric, linearly ramped density distribution occurs via formation of sheath of the hot electrons on the back surface of the target. The maximum energy of the hot electrons and, hence, net acceleration of protons is mainly defined by Forward Raman scattering instability in the underdense part of the plasma. Forward directed

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35

GUPTA, D. N., and A. K. SHARMA. "Parametric up-conversion of a trivelpiece–gould mode in a beam–plasma system." Laser and Particle Beams 22, no. 1 (2004): 89–94. http://dx.doi.org/10.1017/s0263034604221176.

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A large amplitude Trivelpiece–Gould (TG) mode, in a strongly magnetized beam–plasma system, parametrically couples to a beam space charge mode and a TG mode sideband. The density perturbation associated with the beam mode couples with the electron oscillatory velocity, due to the pump wave, to produce a nonlinear current, driving the sideband. The pump and the sideband waves exert a ponderomotive force on the electrons with a component parallel to the ambient magnetic field, driving the beam mode. For a pump wave having k0·v0b0/ω0 < 0, where ω0, k0 are the frequency and the wave number of t

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36

McKinstrie, C. J., and R. Bingham. "Stimulated Raman forward scattering and the relativistic modulational instability of light waves in rarefied plasma." Physics of Fluids B: Plasma Physics 4, no. 8 (1992): 2626–33. http://dx.doi.org/10.1063/1.860178.

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37

Shi-Bing, Liu, Chen Tao, and Chen Shi-Gang. "Dynamic Characteristics of Growing Modes of Raman Instability from Intense Laser Beam Propagating Through Plasma." Communications in Theoretical Physics 41, no. 4 (2004): 605–8. http://dx.doi.org/10.1088/0253-6102/41/4/605.

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38

Fomyts’kyi, Mykhailo, Charles Chiu, Michael Downer, and Franklin Grigsby. "Controlled plasma wave generation and particle acceleration through seeding of the forward Raman scattering instability." Physics of Plasmas 12, no. 2 (2005): 023103. http://dx.doi.org/10.1063/1.1839182.

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39

Luo, Mufei, Stefan Hüller, Min Chen, and Zhengming Sheng. "On the role of bandwidth in pump and seed light waves for stimulated Raman scattering in inhomogeneous plasmas." Physics of Plasmas 29, no. 3 (2022): 032102. http://dx.doi.org/10.1063/5.0078985.

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The effects of incoherence on the three-wave coupling process of backward stimulated Raman scattering (SRS) in inhomogeneous plasmas are investigated theoretically and numerically via a three-wave coupling model. The impact of the plasma wave nonlinearity is taken into account, namely, the effect of trapped electrons via a nonlinear frequency shift of the electron plasma wave. Incoherence in the coupling is introduced in the seed wave, and the laser pump wave via bandwidth associated with a Lorentzian power spectrum. It is found that temporal incoherence can suppress the instability as long as

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40

Thareja, R. K., Abhilasha, and R. K. Dwivedi. "Optical emission spectroscopy of laser-produced carbon plasma at moderate and low irradiance in an ambient atmosphere." Laser and Particle Beams 13, no. 4 (1995): 481–92. http://dx.doi.org/10.1017/s0263034600009629.

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The plasma produced during pulsed-laser deposition of thin carbon films is studied in the presence of ambient gases (Air, He, Ar) at low and moderate irradiances of Nd:YAG laser. The presence of ambient gas shows a pronounced effect on the dynamics of the plasma plume. At moderate intensity, we report an appearance of a peculiar double-peak structure in the temporal profile of the C II transition in laser-produced carbon plasma as it expands into a background gas. We believe that the structure originates mainly due to stratification of the plasma into fast and slow ion components at the interf

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41

Roy, Tridib. "Some glimpses of the plasma processes involved in power spectra of radio pulsars." Monthly Notices of the Royal Astronomical Society 504, no. 4 (2021): 5001–20. http://dx.doi.org/10.1093/mnras/stab1110.

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ABSTRACT Although more than a half-century since pulsar discovery, the field of pulsar astronomy has attained an unprecedented level of success and has opened several windows in astronomy, very few theories have been put forwarded to investigate the nature of power spectra and emission properties of radio pulsars. There has been a copious amount of observation dedicated to investigating the nature and shape of radio pulsar’s power spectra. In this paper, I have suggested some alternative plasma processes in the frame of general parametric instability, such as Stimulated Raman Scattering (SRS)

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42

Paknezhad, Alireza. "Effect of dc-magnetic field on the growth rate of Raman backscattering of X-mode laser in magnetized collisional plasma." Laser and Particle Beams 34, no. 1 (2015): 80–85. http://dx.doi.org/10.1017/s0263034615000932.

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AbstractStimulated Raman backward scattering of an X-mode laser beam propagating in a homogenous plasma is studied in the presence of a transverse magnetic field. As the laser propagates in its X-mode in plasma, it decays into an upper hybrid wave and a down-shifted sideband wave. Beating the incident laser with the sideband exerts a nonlinear ponderomotive force acting on plasma electrons driving the excited upper hybrid wave. The incident wave then parametrically couples with the upper hybrid wave to drive the sideband. Using the fluid model and nonlinear current density, the nonlinear ponde

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43

Wang, Pan, Shengtao Lin, Jiaojiao Zhang, et al. "Efficient 1054 nm Raman Random Fiber Laser." Photonics 10, no. 7 (2023): 851. http://dx.doi.org/10.3390/photonics10070851.

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Low–coherence laser is regarded as the key to mitigating laser–plasma instability (LPI) in laser–driven inertial confinement fusion (ICF), where LPI can decrease the laser energy coupled to the target. With the merits of low coherence, high spectral stability, and flexible output characteristics, the Raman random fiber laser (RRFL) is considered to be a candidate light source in ICF. In this paper, the 1054 nm RRFL with high slope efficiency is achieved for the first time. In the RRFL pump source design section, we have optimized the ytterbium–doped fiber (YDF) length by simulation and amplifi

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44

Gopal, Ram, Pradip Kumar Jain, and Pradip Kumar Jain. "Effect of axial magnetic field tapering on whistler-pumped FEL amplifier in collective Raman regime operation." International Journal of Engineering & Technology 7, no. 4 (2018): 2044. http://dx.doi.org/10.14419/ijet.v7i4.15298.

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The dispersion relation of the FEL Amplifiers is sensitive to the linear tapered strong axial magnetic fields, electron cyclotron frequency and plasma frequency of electrons. For the synchronism of the pumped frequency, it should be closed to electron cyclotron frequency which is resonantly enhanced the wiggler wave number that produces the amplifier radiation for higher frequency from sub millimeter wave to optical ranges. The guiding of radiation signal into the waveguide and charge neutralization phenomenon, the beam density should be greater than the background plasma density with tapered

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45

Chudasama, Dimple, Periklis Katopodis, Nick Stone, et al. "Liquid Biopsies in Lung Cancer: Four Emerging Technologies and Potential Clinical Applications." Cancers 11, no. 3 (2019): 331. http://dx.doi.org/10.3390/cancers11030331.

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Background: Liquid biopsies offer a promising alternative to tissue samples, providing non-invasive diagnostic approaches or serial monitoring of disease evolution. However, certain challenges remain, and the full potential of liquid biopsies has yet to be reached. Here we report several methodological approaches to interrogate liquid biopsies using circulating tumour cell (CTC) enumeration and characterisation, transcriptomics, Raman spectroscopy, and copy number instability (CNI) scores using blood samples of lung cancer (LC) patients. Methods: We choose LC; since it still is the most common

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46

Rosenberg, M. J., A. A. Solodov, J. F. Myatt, et al. "Effect of overlapping laser beams and density scale length in laser-plasma instability experiments on OMEGA EP." Physics of Plasmas 30, no. 4 (2023): 042710. http://dx.doi.org/10.1063/5.0135603.

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Experiments have been conducted on the OMEGA EP laser facility to study the effect of density scale length and overlapping beam geometry on laser-plasma instabilities near and below the quarter-critical density. Experiments were conducted in both planar geometry (density scale length [Formula: see text] [Formula: see text] 190 to 300 [Formula: see text]m) and spherical geometry ([Formula: see text] [Formula: see text] 150 [Formula: see text]m) with up to four overlapping beams and were designed to have overlapped intensities and density scale lengths comparable to OMEGA spherical experiments,

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47

Stark, D. J., L. Yin, T. B. Nguyen, et al. "Nonlinear models for coupling the effects of stimulated Raman scattering to inertial confinement fusion codes." Physics of Plasmas 30, no. 4 (2023): 042714. http://dx.doi.org/10.1063/5.0134881.

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Laser plasma instabilities (LPI) reduce driver-target coupling, alter implosion symmetry, and therefore can fundamentally limit fusion performance in inertial confinement fusion (ICF). Developing a predictive modeling capability for LPI effects can critically advance the success of the field. We perform vector particle-in-cell simulations of multi-speckled laser beams undergoing stimulated Raman scattering (SRS) at various densities and intensities relevant to mainly indirectly driven and a subset of parameter space for directly driven ICF systems, focusing on the regimes with intensities abov

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48

Williams, E. A., and T. W. Johnston. "Phase‐inflection parametric instability behavior near threshold with application to laser–plasma stimulated Raman scattering (SRS) instabilities in exploding foils." Physics of Fluids B: Plasma Physics 1, no. 1 (1989): 188–94. http://dx.doi.org/10.1063/1.859086.

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Iwamoto, Masanori, Takanobu Amano, Yosuke Matsumoto, Shuichi Matsukiyo, and Masahiro Hoshino. "Particle Acceleration by Pickup Process Upstream of Relativistic Shocks." Astrophysical Journal 924, no. 2 (2022): 108. http://dx.doi.org/10.3847/1538-4357/ac38aa.

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Abstract Particle acceleration at magnetized purely perpendicular relativistic shocks in electron–ion plasmas is studied by means of two-dimensional particle-in-cell simulations. Magnetized shocks with the upstream bulk Lorentz factor γ 1 ≫ 1 are known to emit intense electromagnetic waves from the shock front, which induce electrostatic plasma waves (wakefield) and transverse filamentary structures in the upstream region via stimulated/induced Raman scattering and filamentation instability, respectively. The wakefield and filaments inject a fraction of the incoming particles into a particle a

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Long Xin-Yu, 孙今人, 王琛, et al. "Study on near forward scattering light of planar film target driven by broadband laser." Acta Physica Sinica 73, no. 22 (2024): 0. http://dx.doi.org/10.7498/aps.73.20240823.

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Laser-plasma instability (LPI) is one of the key issues in the ignition process of inertial confinement fusion (ICF), and extensive theoretical, simulation, and experimental research has been conducted over the years. Broadband laser, due to its low temporal coherence, can reduce the effective electric field strength when interacting with plasma and disrupt the phase-matching conditions of LPI, thus considered an effective approach to solving LPI issues. Current extensive simulation studies indicate that broadband laser can suppress the generation of phenomena such as Stimulated Brillouin Scat

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