Log in

Relevant bibliographies by topics / Light-ion plasma / Journal articles

To see the other types of publications on this topic, follow the link: Light-ion plasma.

Journal articles on the topic 'Light-ion plasma'

Author: Grafiati

Published: 11 December 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Light-ion plasma.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Gledhill, I. M. A., and M. A. Hellberg. "Criteria governing ion-acoustic waves in two-ion plasmas." Journal of Plasma Physics 36, no. 1 (1986): 75–96. http://dx.doi.org/10.1017/s0022377800011594.

Full text

Abstract:

It has previously been observed that ion-acoustic waves exhibit two types of behaviour as the proportion of light ions in a mixed plasma is varied. Either the principal mode of the heavy ion plasma changes continuously into that of the light ion plasma, or it becomes too heavily damped to be observable while a second wave appears and develops into the principal light ion mode. A similar phenomenon is observed as the wavenumber or the ratio of electron temperature to ion temperature is changed. Criteria determining which behaviour occurs are derived by considering the form of the dielectric res

APA, Harvard, Vancouver, ISO, and other styles

2

Ozaki, T., S. Miyamoto, K. Imasaki, S. Nakai, and C. Yamanaka. "Light ion beam transport in plasma channels." Journal of Applied Physics 58, no. 6 (1985): 2145–53. http://dx.doi.org/10.1063/1.335979.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

HATAKEYAMA, R., T. KANEKO, and W. OOHARA. "New aspects on plasma wave and instability phenomena in basic-plasma experiments." Journal of Plasma Physics 76, no. 3-4 (2010): 513–23. http://dx.doi.org/10.1017/s0022377809990717.

Full text

Abstract:

AbstractOur basic-plasma experiments relating to fusion-oriented and space plasmas have yielded deep and unique insight into wave and instability physics in ordinary electron-ion and unusual pair-particle plasmas. Here recent results on flow shears, polarization reversal and pair-ions are presented in the way that light is shed on the underlying physics.

APA, Harvard, Vancouver, ISO, and other styles

4

Okada, T., and K. Niu. "Filamentation instability of rotating light ion beam." Laser and Particle Beams 6, no. 4 (1988): 699–702. http://dx.doi.org/10.1017/s0263034600005632.

Full text

Abstract:

Filamentation instability for a rotating light ion beam (LIB) fusion system is investigated. Stability conditions, including the effects of fractional current neutralization, rotation of LIB and beam temperature, are derived for propagation through a background plasma. The results are illustrated by plotting stability boundaries for a rotating proton beam propagating in a plasma.

APA, Harvard, Vancouver, ISO, and other styles

5

Okada, T., and H. Tazawa. "Two-stream instability for a light ion beam-plasma system with external magnetic field." Laser and Particle Beams 12, no. 1 (1994): 13–16. http://dx.doi.org/10.1017/s0263034600007199.

Full text

Abstract:

For inertial confinement fusion (ICF), a focused light ion beam (LIB) is required to propagate stably through a chamber to a target. It is pointed out that the applied external magnetic field is important for LIB propagation. To investigate the influence of the external magnetic field on the LIB propagation, the electrostatic dispersion relation of the magnetized light ion beam-plasma system was analyzed. The particle in-cell (PIC) simulation results are presented for a light ion beam-plasma system with an external magnetic field.

APA, Harvard, Vancouver, ISO, and other styles

6

Bin, J. H., A. L. Lei, X. Q. Yang, et al. "Quasi-monoenergetic proton beam generation from a double-layer solid target using an intense circularly polarized laser." Laser and Particle Beams 27, no. 3 (2009): 485–90. http://dx.doi.org/10.1017/s0263034609990218.

Full text

Abstract:

AbstractMonoenegetic ion beam generation from circularly polarized laser-pulse interaction with a double-layer target is considered. The front layer consists of heavy-ion plasma, and the rear layer is a small thin coating of light-ion plasma. Particle-in-cell simulation shows that the multi-dimensional effects in the ion radiation pressure acceleration are avoided and a highly monoenergetic light-ion beam can be produced. Our simulations reveal that the charge-mass ratio of heavy ions in the front layer and the thicknesses of both layers can strongly affect the proton energy spectra.

APA, Harvard, Vancouver, ISO, and other styles

7

Thakur, P. K., R. R. Pokhrel, and R. Khanal. "FLUID ANALYSIS OF MAGNETIZED PLASMA SHEATH IN A CYLINDRICAL GEOMETRY." Journal of Institute of Science and Technology 23, no. 1 (2018): 26–29. http://dx.doi.org/10.3126/jist.v23i1.22157.

Full text

Abstract:

Plasma sheath formed in front of a material wall plays an important role in overall plasma properties. Magnetized plasma sheath for both collisional and collisionless cases in a cylindrical co-ordinate system was studied using a fluid model. The fluid equations were compiled for the considered geometry and were solved numerically, using the fourth-order Runge-Kutta method for prescribed boundary and initial conditions. The ion velocity along the axis of the cylinder and the ion density profiles were studied for collisionless and collisional cases and at different obliqueness of the magnetic fi

APA, Harvard, Vancouver, ISO, and other styles

8

Vincent, Simon, Vincent Dolique, and Nicolas Plihon. "High-speed imaging of magnetized plasmas: When electron temperature matters." Physics of Plasmas 29, no. 3 (2022): 032104. http://dx.doi.org/10.1063/5.0083130.

Full text

Abstract:

High-speed camera imaging is a powerful tool to probe the spatiotemporal features of unsteady processes in plasmas, usually assuming light fluctuations to be a proxy for the plasma density fluctuations. In this article, we systematically compare high-speed camera imaging with simultaneous measurements of the plasma parameters—plasma density, electron temperature, and floating potential—in a modestly magnetized Argon plasma column at low pressure (1 mTorr, magnetic fields ranging from 160 to 640 G). The light emission was filtered around 488 ± 5, 750 ± 5, and 810 ± 5 nm. We show that the light

APA, Harvard, Vancouver, ISO, and other styles

9

Kirkwood, R. K., P. L. Poole, D. H. Kalantar, et al. "Production of high fluence laser beams using ion wave plasma optics." Applied Physics Letters 120, no. 20 (2022): 200501. http://dx.doi.org/10.1063/5.0086068.

Full text

Abstract:

Optical components for laser beams with high peak and averaged powers are being developed worldwide using stimulated plasma scattering that occurs when plasmas interact with intense, coherent light. After decades of pursuit of pulse compressors, mirrors, and other plasma based components that can be created by stimulated scattering from electron density perturbations forming on ultra-short time scales (e.g., via Stimulated Raman Scattering), more recent work has produced optical components on longer time scales allowing ion motion as well [via Stimulated Brillouin Scattering (SBS)]. In the mos

APA, Harvard, Vancouver, ISO, and other styles

10

BARRIGA-CARRASCO, MANUEL D., and GILLES MAYNARD. "A 3D trajectory numerical simulation of the transport of energetic light ion beams in plasma targets." Laser and Particle Beams 23, no. 2 (2005): 211–17. http://dx.doi.org/10.1017/s0263034605040097.

Full text

Abstract:

We present in this paper a theoretical modeling and a numerical simulation devoted to the problem of transport and energy deposition profile of high current light ion beams interacting with dense matter. A numerical code, named MBC-ITFIP, is used to follow the trajectories of light atomic or molecular ions inside plasma targets with non-uniform density, temperature and composition profiles. MBC-ITFIP has been more specifically optimized for application of ion beams generated by the new high intensity laser sources, such as radiography and isochoric heating of dense plasmas.

APA, Harvard, Vancouver, ISO, and other styles

11

Ulrich, Andreas. "Light emission from particle beam induced plasma: An overview." Laser and Particle Beams 30, no. 2 (2012): 199–205. http://dx.doi.org/10.1017/s0263034611000838.

Full text

Abstract:

AbstractExperiments to study the light emission from plasma produced by particle beams are presented. Fundamental aspects in comparison with discharge plasma formation are discussed. It is shown that the formation of excimer molecules is an important process. This paper summarizes various studies of particle beam induced light emission and presents the first results of a direct comparison of light emission induced by electron- and ion beam excitation. Both high energy heavy ion beam and low energy electron beam experiments are described and an overview over applications in the form of light so

APA, Harvard, Vancouver, ISO, and other styles

12

Watrous, J. J., and R. E. Olson. "Ion Beam Trapping in Plasma Channels for Light Ion Inertial Confinement Fusion." Fusion Technology 10, no. 3P2A (1986): 664–73. http://dx.doi.org/10.13182/fst86-a24818.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Timonen, Oskari, Hannu Koivisto, Risto Kronholm, and Ville Toivanen. "Time-resolved measurement of optical emission line profiles from electron cyclotron resonance ion source plasma." Journal of Physics: Conference Series 2743, no. 1 (2024): 012008. http://dx.doi.org/10.1088/1742-6596/2743/1/012008.

Full text

Abstract:

Abstract Optical emission spectroscopy provides a non-invasive method to probe the properties of hot and highly charged magnetically confined plasmas. The optical emission line profiles enable, for example, to identify the different species and characterize the relative population densities and temperatures of the ions and neutrals forming the plasma. The feasibility of this approach has been demonstrated at the University of Jyväskylä accelerator laboratory by measuring the light emitted by Electron Cyclotron Resonance Ion Source (ECRIS) plasma with a high-resolution spectrometer setup POSSU

APA, Harvard, Vancouver, ISO, and other styles

14

Schenkel, T., A. Persaud, H. Wang, et al. "Investigation of light ion fusion reactions with plasma discharges." Journal of Applied Physics 126, no. 20 (2019): 203302. http://dx.doi.org/10.1063/1.5109445.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Marten, I., R. Deeken, R. Hedrich, and M. R. G. Roelfsema. "Light-induced modification of plant plasma membrane ion transport." Plant Biology 12 (August 16, 2010): 64–79. http://dx.doi.org/10.1111/j.1438-8677.2010.00384.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Murayama, Minoru, Masahiro Nemoto, Katsumi Masugata, and Kiyoshi Yatsui. "Light-Ion Beam Focusing by z-Discharged Plasma Channel." Japanese Journal of Applied Physics 27, Part 1, No. 8 (1988): 1526–30. http://dx.doi.org/10.1143/jjap.27.1526.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Baboolal, S., R. Bharuthram, and M. A. Hellberg. "Arbitrary-amplitude theory of ion-acoustic solitons in warm multi-fluid plasmas." Journal of Plasma Physics 41, no. 2 (1989): 341–53. http://dx.doi.org/10.1017/s002237780001391x.

Full text

Abstract:

A recently described numerical theory for obtaining the Sagdeev and real potential profiles of stationary wave forms in a plasma consisting of double-Maxwellian electrons and two or more species of warm ions is used for the study of solitons in such a plasma. The effects of ion temperature and light-ion concentration on rarefactive ion-acoustic soliton profiles in a double-ion plasma obtained with this large-amplitude theory are compared with those predicted from a Korteweg–de Vries equation. Application of the theory to the work of Nakamura and co-workers is discussed, and we draw attention t

APA, Harvard, Vancouver, ISO, and other styles

18

ARINAMINPATHY, N., J. E. ALLEN, and J. R. OCKENDON. "Modelling an isolated dust grain in a plasma using matched asymptotic expansions." Journal of Plasma Physics 73, no. 5 (2007): 793–810. http://dx.doi.org/10.1017/s0022377806006301.

Full text

Abstract:

AbstractThe study of dusty plasmas is of significant practical use and scientific interest. A characteristic feature of dust grains in a plasma is that they are typically smaller than the electron Debye distance, a property which we exploit using the technique of matched asymptotic expansions. We first consider the case of a spherical dust particle in a stationary plasma, employing the Allen–Boyd–Reynolds theory, which assumes cold, collisionless ions. We derive analytical expressions for the electric potential, the ion number density and ion velocity. This requires only one computation that i

APA, Harvard, Vancouver, ISO, and other styles

19

Okada, Toshio, and Winfried Schmidt. "Two-stream and filamentation instabilities for a light ion beam—plasma system." Journal of Plasma Physics 37, no. 3 (1987): 373–82. http://dx.doi.org/10.1017/s0022377800012253.

Full text

Abstract:

Electrostatic two-stream and electromagnetic filamentation instabilities for a light ion beam penetrating a plasma are investigated. The dispersion relations of these instabilities including the effect of plasma heating by the ion beam are solved analytically and numerically. Stability conditions are derived for propagation through a plasma. Attention is paid to the finite size effects of beams with small diameters of the order 0·1 cm typical for pinched gas discharges. The results are illustrated by plotting stability boundaries for a 100 keV proton beam propagating through a plasma.

APA, Harvard, Vancouver, ISO, and other styles

20

El-Shamy, E. F., H. Elhosiny Ali, and M. O. Abdellahi. "Overtaking Interactions of Multi-Ion Acoustic Shock Waves in a Magnetized Degenerate Plasma: An Application in White Dwarfs." Journal of Nanoelectronics and Optoelectronics 17, no. 2 (2022): 335–43. http://dx.doi.org/10.1166/jno.2022.3203.

Full text

Abstract:

Overtaking interactions are examined of multi-ion acoustic shock waves in magnetized degenerate quantum plasmas comprising inertial non-relativistic heavy and light ions having positive charges ultra-relativistic degenerate inertialess electrons. A Burgers’ equation governs the nonlinear excitation of multi-ion acoustic shock waves in a plasma model at hand. The Cole-Hopf transformation and the exponential function have been used to study the overtaking interactions of multi-ion acoustic shock waves in two modes (i.e., the fast and the slow modes). Numerically, the compressive ion-acoustic sho

APA, Harvard, Vancouver, ISO, and other styles

21

Krafft, C., and B. V. Lundin. "Determination of the averaged charge-to-mass ratio of the heavy charged constituents of a magnetoplasma using whistler wave measurements." Annales Geophysicae 28, no. 12 (2010): 2237–47. http://dx.doi.org/10.5194/angeo-28-2237-2010.

Full text

Abstract:

Abstract. In a cold magnetized plasma with two light ions of comparable gyrofrequencies and any species of heavy ions and/or charged dust particulates, a technique is developed to recover the relative charge density of the heavy plasma population and to estimate its effective averaged charge-to-mass ratio. Such results can be obtained without using mass spectrometer data but only the measurements of the ion plasma frequency, the electron gyro- and plasma frequencies as well as the two highest ion cutoff frequencies.

APA, Harvard, Vancouver, ISO, and other styles

22

Aoki, Takayuki, and Keishiro Niu. "Current neutralization of ion beam rotating and propagating in plasma." Laser and Particle Beams 5, no. 3 (1987): 481–93. http://dx.doi.org/10.1017/s0263034600002974.

Full text

Abstract:

The current-neutralization fraction of a rotating and propagating light ion beam (LIB) injected into a low density plasma is investigated numerically. The beam space charge is essentially neutralized by a redistribution of the background plasma electrons in a time duration equal to the inverse of electron plasma frequency. When the density of the background plasma is comparable with that of the beam, incomplete current neutralization occurs because the strong magnetic field induced by the intense ion beam restricts the return plasma current.In the simulation, the ion beam and the background pl

APA, Harvard, Vancouver, ISO, and other styles

23

MILOCH, W. J., V. L. REKAA, H. L. PÉCSELI, and J. TRULSEN. "Ion acoustic double layers forming behind irradiated solid objects in streaming plasmas." Journal of Plasma Physics 76, no. 3-4 (2010): 429–39. http://dx.doi.org/10.1017/s002237780999064x.

Full text

Abstract:

AbstractSmall solid metallic objects in relative motion to thermal plasmas are studied by numerical simulations. We analyze supersonic motions, where a distinctive ion wake is formed behind obstacles. At these plasma drift velocities, ions enter the wake predominantly due to deflections by the electric field in the sheath around the obstacle. By irradiating the back side of the object by ultraviolet (UV) light, we can induce also an enhanced photo-electron population there. The resulting charge distribution gives rise to a pronounced local potential and plasma density well behind the object. T

APA, Harvard, Vancouver, ISO, and other styles

24

Andrianova, N. N., A. M. Borisov, B. L. Krit, et al. "Ion-plasma modification of the surface of light fiber materials." Journal of Physics: Conference Series 1713 (December 2020): 012006. http://dx.doi.org/10.1088/1742-6596/1713/1/012006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

McWilliams, R., J. P. Booth, E. A. Hudson, J. Thomas, and D. Zimmerman. "Laser-induced fluorescence ion diagnostics in light of plasma processing." Thin Solid Films 515, no. 12 (2007): 4860–63. http://dx.doi.org/10.1016/j.tsf.2006.10.027.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Carter, M. D., F. W. Baity, G. C. Barber, et al. "Comparing experiments with modeling for light ion helicon plasma sources." Physics of Plasmas 9, no. 12 (2002): 5097–110. http://dx.doi.org/10.1063/1.1519539.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Rüppel, H., and J. Cieslik. "Light Stimulated Ion Fluxes Across the Plasma Membrane of Photoreceptors." Berichte der Bunsengesellschaft für physikalische Chemie 92, no. 9 (1988): 1020–25. http://dx.doi.org/10.1002/bbpc.198800254.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Bharuthram, R., and M. A. Hellberg. "Low-frequency drift-induced instabilities in a magnetized two-ion plasma." Journal of Plasma Physics 35, no. 3 (1986): 393–412. http://dx.doi.org/10.1017/s0022377800011429.

Full text

Abstract:

Numerical solutions of a dispersion relation for low-frequency electrostatic waves in a current-carrying, cold, weakly collisional, magnetized two-ion plasma are used to discuss the two-stream and resistive natures of the ion-ion hybrid instability. An instability with analogous behaviour is found to be associated with the light ion cyclotron frequency. Analytical results explain the behaviour. A numerically derived transition diagram summarizes the parameter values for which transitions between different modes take place.

APA, Harvard, Vancouver, ISO, and other styles

29

Jahan, Sharmin, Booshrat E. Sharmin, Nure Alam Chowdhury, Abdul Mannan, Tanu Shree Roy, and A. A. Mamun. "Electrostatic Ion-Acoustic Shock Waves in a Magnetized Degenerate Quantum Plasma." Plasma 4, no. 3 (2021): 426–34. http://dx.doi.org/10.3390/plasma4030031.

Full text

Abstract:

A theoretical investigation has been carried out to examine the ion-acoustic shock waves (IASHWs) in a magnetized degenerate quantum plasma system containing inertialess ultra-relativistically degenerate electrons, and inertial non-relativistic positively charged heavy and light ions. The Burgers equation is derived by employing the reductive perturbation method. It can be seen that under the consideration of non-relativistic positively charged heavy and light ions, the plasma model only supports the positive electrostatic shock structure. It is also observed that the charge state and number d

APA, Harvard, Vancouver, ISO, and other styles

30

Chen, C., T. Gong, Z. Li, et al. "Implementation of a large-aperture Thomson scattering system for diagnosing driven ion acoustic waves on Shenguang-III prototype laser facility." Journal of Instrumentation 17, no. 05 (2022): P05017. http://dx.doi.org/10.1088/1748-0221/17/05/p05017.

Full text

Abstract:

Abstract A large-aperture (f/3) Thomson scattering diagnostic system, for measuring the ion acoustic waves driven by stimulated Brillouin scattering, has been recently implemented at the bottom of the target chamber on Shenguang-III prototype laser facility. With a 4ω (263.3 nm) probe beam entering the target chamber in the horizontal plane, this system is capable of detecting the Thomson scattered light off ion acoustic waves driven by a 3ω (351 nm) interaction beam. The Thomson scattered light off a driven ion acoustic wave emits at a specific direction, for a given electron density. The f/3

APA, Harvard, Vancouver, ISO, and other styles

31

Niu, K., P. Mulser, and L. Drska. "Beam generations of three kinds of charged particles." Laser and Particle Beams 9, no. 1 (1991): 149–65. http://dx.doi.org/10.1017/s0263034600002391.

Full text

Abstract:

Analyses are given for beam generations of three kinds of charged particles: electrons, light ions, and heavy ions. The electron beam oscillates in a dense plasma irradiated by a strong laser light. When the frequency of laser light is high and its intensity is large, the acceleration of oscillating electrons becomes large and the electrons radiate electromagnetic waves. As the reaction, the electrons feel a damping force, whose effect on oscillating electron motion is investigated first. Second, the electron beam induces the strong electromagnetic field by its self-induced electric current de

APA, Harvard, Vancouver, ISO, and other styles

32

BARR, H. C., T. J. M. BOYD, and A. V. LUKYANOV. "Raman gain against a background of non-thermal ion fluctuations in a plasma." Journal of Plasma Physics 64, no. 5 (2000): 623–30. http://dx.doi.org/10.1017/s0022377800008837.

Full text

Abstract:

A complex stimulated Raman scattering event against a background of non-thermal ion acoustic waves in an inhomogeneous plasma is described. We obtain analytic forms for the Raman gain due to a five-wave interaction consisting of conventional three-wave Raman scattering followed by the decay of the Raman Langmuir wave into a second Langmuir wave (or a second scattered light wave) and an ion acoustic wave. Very modest levels of ion waves produce a significant effect on Raman convective gain. A combination of plasma inhomogeneity and suprathermal ion fluctuations may offer a means for the control

APA, Harvard, Vancouver, ISO, and other styles

33

MacFarlane, J. J., P. Wang, J. E. Bailey, T. A. Mehlhorn та R. J. Dukart. "Plasma diagnostics using Kα satellite emission spectroscopy in light ion beam fusion experiments". Laser and Particle Beams 13, № 2 (1995): 231–41. http://dx.doi.org/10.1017/s0263034600009356.

Full text

Abstract:

Kα satellite spectroscopy can be a valuable technique for diagnosing conditions in high energy density plasmas. Kα emission lines are produced in intense light ion beam plasma interaction experiments as 2p electrons fill partially open Is shells created by the ion beam. In this paper, we present results from collisional-radiative equilibrium (CRE) calculations which show how Kα emission spectroscopy can be used to determine target plasma conditions in intense lithium beam experiments on Particle Beam Fusion Accelerator-II (PBFAII) at Sandia National Laboratories. In these experiments, 8–10 MeV

APA, Harvard, Vancouver, ISO, and other styles

34

Baboolal, S., R. Bharuthram, and M. A. Hellberg. "Arbitrary-amplitude rarefactive ion-acoustic double layers in warm multi-fluid plasmas." Journal of Plasma Physics 40, no. 1 (1988): 163–78. http://dx.doi.org/10.1017/s0022377800013180.

Full text

Abstract:

Large- and small-amplitude rarefactive ion-acoustic double layers have recently been studied in a fluid plasma with double Maxwellian electrons and a single cold ion species. Here the stationary large-amplitude theory is generalized to include two warm ion species. A technique for numerically solving the full nonlinear problem is presented. With it, useful predictions of the effect of ion temperatures and of light-ion contamination on the double-layer structure are made. A generalization to an arbitrary number of similar fluid components is pointed out. The small-amplitude perturbation theory

APA, Harvard, Vancouver, ISO, and other styles

35

Boyd, T. J. M. "Laser–plasma interaction physics in underdense coronal plasmas." Canadian Journal of Physics 64, no. 8 (1986): 944–55. http://dx.doi.org/10.1139/p86-163.

Full text

Abstract:

After a brief review of stimulated Raman scattering and two-plasmon decay, which dominate the physics of laser–plasma interactions at and below the quarter-critical density, we summarize some of the principal characteristics of emission from targets at half-harmonics of the laser frequency. Two mechanisms in particular are thought to contribute to the emission; Raman conversion and the direct linear conversion of plasmons generated by two-plasmon decay. Both processes are reviewed and the implications of each for the emission spectra examined.The effect of strong self-generated magnetic fields

APA, Harvard, Vancouver, ISO, and other styles

36

Verscharen, Daniel, Tulasi N. Parashar, S. Peter Gary, and Kristopher G. Klein. "Dependence of kinetic plasma waves on ion-to-electron mass ratio and light-to-Alfvén speed ratio." Monthly Notices of the Royal Astronomical Society 494, no. 2 (2020): 2905–11. http://dx.doi.org/10.1093/mnras/staa977.

Full text

Abstract:

ABSTRACT The magnetization |Ωe|/ωe is an important parameter in plasma astrophysics, where Ωe and ωe are the electron gyro-frequency and electron plasma frequency, respectively. It depends only on the mass ratio mi/me and the light-to-Alfvén speed ratio c/vAi, where mi (me) is the ion (electron) mass, c is the speed of light, and vAi is the ion Alfvén speed. Non-linear numerical plasma models such as particle-in-cell simulations must often assume unrealistic values for mi/me and for c/vAi. Because linear theory yields exact results for parametric scalings of wave properties at small amplitudes

APA, Harvard, Vancouver, ISO, and other styles

37

Kang, Xiangdong, Katsumi Masugata, and Kiyoshi Yatsui. "Evaluation of ablation plasma characteristics of intense, pulsed, ion-beam evaporation." Laser and Particle Beams 13, no. 2 (1995): 201–10. http://dx.doi.org/10.1017/s0263034600009320.

Full text

Abstract:

Basic characteristics of an ablation plasma produced by an intense, pulsed, ion beam have been evaluated from the measurement of ion-flux density by a biased ion collector. The target mass loss is detected by the measurement of the weight of the target in the comparison before and after the shot. A one-dimensional hydrodynamic model is introduced with the assumption of a high-power, light-ion beam-driven expansion and the following adiabatic expansion into vacuum. With this model, it is possible for us to deduce the temperature and the pressure from the data of the ion flux and the mass loss o

APA, Harvard, Vancouver, ISO, and other styles

38

Borovskiĭ, A. V., V. V. Korobkin, and Ch K. Mukhtarov. "Light amplification utilizing H-ion transitions in a low-temperature plasma." Soviet Journal of Quantum Electronics 15, no. 2 (1985): 185–88. http://dx.doi.org/10.1070/qe1985v015n02abeh006115.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Dinger, R., K. Rohr та H. Weber. "Plasma ion spectra from laser produced plasmas at λ = 1·06 μm and λ =0·53 μm". Laser and Particle Beams 4, № 2 (1986): 239–47. http://dx.doi.org/10.1017/s0263034600001798.

Full text

Abstract:

Wavelength dependent absorption in laser-plasma interactions was investigated by measuring the energy spectra of freely expanding plasmas in their asymptotic stage of expansion. The experiments were performed with both 1·06- and 0·53-μm-wavelength light incident on flat tantalum targets. The experimental conditions were chosen adequately to ensure that inverse bremsstrahlung was the dominating absorption mechanism. As a result it is found that the absorption is enhanced at the shorter wavelength by a factor of 1·3. Primarily this leads to a higher ionisation state of the plasma and higher kine

APA, Harvard, Vancouver, ISO, and other styles

40

Collier, J., G. Hall, H. Haseroth, et al. "The CERN laser–ion source." Laser and Particle Beams 14, no. 3 (1996): 283–92. http://dx.doi.org/10.1017/s0263034600010041.

Full text

Abstract:

This paper describes the first results of a feasibility study undertaken at CERN to determine whether a laser-produced plasma can be used as a source of intense highly charged heavy ion beams. A variety of important measurements have been made, and the results are encouraging. Furthermore, a beam of highly charged light ions produced by the laser ion source has been accelerated successfully in a radio frequency quadrupole (RFQ) structure.

APA, Harvard, Vancouver, ISO, and other styles

41

Klapperich, C., L. Pruitt, and K. Komvopoulos. "Nanomechanical properties of energetically treated polyethylene surfaces." Journal of Materials Research 17, no. 2 (2002): 423–30. http://dx.doi.org/10.1557/jmr.2002.0059.

Full text

Abstract:

The effects of energetic treatments, crosslinking, and plasma modification on the surface mechanical properties and deformation behavior of ultrahigh molecular weight polyethylene (UHMWPE) were examined in light of nanoindentation experiments performed with a surface force microscope. Samples of UHMWPE were subjected to relatively high-dose gamma irradiation, oxygen ion implantation, and argon ion beam treatment. A range of crosslinking was achieved by varying the radiation dose. In addition, low-temperature plasma treatment with hexamethyldisiloxane/O2 and C3F6 was investigated for comparison

APA, Harvard, Vancouver, ISO, and other styles

42

Yu, W., M. Y. Yu, H. Xu, Y. W. Tian, J. Chen, and A. Y. Wong. "Intense local plasma heating by stopping of ultrashort ultraintense laser pulse in dense plasma." Laser and Particle Beams 25, no. 4 (2007): 631–38. http://dx.doi.org/10.1017/s0263034607000742.

Full text

Abstract:

AbstractSelf-trapping, stopping, and absorption of an ultrashort ultraintense linearly polarized laser pulse in a finite plasma slab of near-critical density is investigated by particle-in-cell simulation. As in the underdense plasma, an electron cavity is created by the pressure of the transmitted part of the light pulse and it traps the latter. Since the background plasma is at near-critical density, no wake plasma oscillation is created. The propagating self-trapped light rapidly comes to a stop inside the slab. Subsequent ion Coulomb explosion of the stopped cavity leads to explosive expul

APA, Harvard, Vancouver, ISO, and other styles

43

Cornolti, F., P. Mulser, and M. Hahn. "Absorption of ultrashort laser pulses in solid targets." Laser and Particle Beams 9, no. 2 (1991): 465–75. http://dx.doi.org/10.1017/s0263034600003499.

Full text

Abstract:

Femtosecond laser pulses are capable of producing very high light intensities at moderate pulse energies. We study the laser light absorption at flux densities of 1017 W/cm2 and higher during the plasma formation and the plasma heating process. In the first stage multiphoton and collisional ionization dominate. Modification of the inverse bremsstrahlung absorption occur owing to ionization dephasing. In the second stage beam energy conversion is mainly by collisional absorption at normal incidence, and by resonance absorption at oblique illumination. Simultaneously strong electron heat conduct

APA, Harvard, Vancouver, ISO, and other styles

44

Hicks, Nathaniel K., Amanda Bowman, and Katarina Godden. "Particle-in-Cell Simulation of Quasi-Neutral Plasma Trapping by RF Multipole Electric Fields." Physics 1, no. 3 (2019): 392–401. http://dx.doi.org/10.3390/physics1030028.

Full text

Abstract:

Radio-frequency (RF) charged particle traps, such as the Paul trap or higher order RF multipole traps, may be used to trap quasi-neutral plasma. The presence of positive and negative plasma species mitigates the ejection of particles that occurs due to space charge repulsion. For symmetric species, such as a pair plasma, the trapped particle distribution is essentially equal for both species. For plasma with species of disparate charge-to-mass ratio, the RF parameters are chosen to directly trap the lighter species, leading to loss of the heavier species until sufficient net space charge devel

APA, Harvard, Vancouver, ISO, and other styles

45

Jiang, Weihua, Toshiya Sakagami, Katsumi Masugata, and Kiyoshi Yatsui. "Three-dimensional, tight focusing of intense pulsed light-ion beam by spherical plasma focus diode." Laser and Particle Beams 13, no. 2 (1995): 343–50. http://dx.doi.org/10.1017/s0263034600009459.

Full text

Abstract:

A new type of ion-beam diode, self-magnetically insulated, spherical plasma focus diode (SPFD), was developed. With the SPFD, three-dimensional focusing of an intense pulsed light-ion beam was obtained. Experiments and simulations were carried out to study the behavior of the SPFD. In the experiments, diagnostic results of the Rutherford scattering pinhole camera and the shadow-box showed that the ion beam was focused into a small cylindrical area with ∽0.5 mm in diameter and ∽2.5 mm in length. The average ion-beam current density at the anode surface was found to be ∽2 kA/cm2. In the simulati

APA, Harvard, Vancouver, ISO, and other styles

46

Мелузова, Д. С., П. Ю. Бабенко, А. Н. Зиновьев та А. П. Шергин. "Распыление вольфрама ионами бериллия и неона". Письма в журнал технической физики 46, № 24 (2020): 19. http://dx.doi.org/10.21883/pjtf.2020.24.50422.18487.

Full text

Abstract:

Sputtering yields for tungsten under Be and Ne ion bombardment as well as angular dependencies of the sputtering yields were calculated using molecular dynamics simulation. The results for Ne are in good agreement with experimental data. The obtained results for Be-W sputtering are needed to calculate the impurity influx into the plasma when the divertor material - tungsten - is bombarded with Be ions in ITER tokamak plasma. A model that explains the universal behavior of near-threshold sputtering yields for light ion-induced sputtering of tungsten was proposed.

APA, Harvard, Vancouver, ISO, and other styles

47

Fujita, J., S. Morita, and M. Sakurai. "X-ray diagnostics for fusion plasmas." Laser and Particle Beams 7, no. 3 (1989): 483–86. http://dx.doi.org/10.1017/s0263034600007448.

Full text

Abstract:

We have developed medium and high resolution X-ray crystal spectrometers for measurements of charge state distributions of impurity ions, density of suprathermal electrons and ion temperature in magnetically confined plasmas. The techniques utilizing these spectrometers are, in principle, applicable to laser produced plasmas, especially in their expanding phase. The role of X-ray spectroscopy to produce useful data for atomic physics as well as for plasma diagnostics is emphasized. A beam-line has been designed and installed to the Ultraviolet Synchrotron Radiation Facility (UVSOR) at IMS, Oka

APA, Harvard, Vancouver, ISO, and other styles

48

SHARMA, JYOTSNA, SURESH C. SHARMA, V. K. JAIN, and AJAY GAHLOT. "Higher harmonics generation by a spiraling ion beam in collisionless magnetized plasma." Journal of Plasma Physics 79, no. 5 (2013): 577–85. http://dx.doi.org/10.1017/s002237781300007x.

Full text

Abstract:

AbstractA spiraling ion beam propagating through a magnetized plasma cylinder containing K+ light positive ions, electrons, and C7F14− heavy negative ions drives electrostatic ion–cyclotron waves to instability via cyclotron interaction. Higher harmonics of the beam cyclotron frequency can be generated in this way. The unstable mode frequencies and growth rates of both unstable light positive ions and heavy negative ions increase with the relative density of heavy negative ions. Moreover, the growth rate of unstable modes scales as the one-third power of the beam density. The growth rate of un

APA, Harvard, Vancouver, ISO, and other styles

49

Weber, B. V., J. R. Boller, D. G. Colombant, et al. "Plasma erosion opening switch research for ICF." Laser and Particle Beams 5, no. 3 (1987): 537–48. http://dx.doi.org/10.1017/s0263034600003025.

Full text

Abstract:

Inertial confinement fusion using light ion beams requires fast rise time, high power drivers. One technique to enhance a conventional pulsed power generator is to use a plasma erosion opening switch (PEOS) between the generator and the ion diode. Ideally, the PEOS conducts current until a current threshold is reached, then rapidly opens and delivers the inductively stored energy to the load on a short time scale. Experiments at the Naval Research Laboratory (NRL) used a PEOS to improve the Gamble II current rise time from 60 ns to 10 ns at 1 MA. Load voltages over 4 MV have been obtained (&gt

APA, Harvard, Vancouver, ISO, and other styles

50

Nyckees, S., O. Delferrière, R. Duperrier, F. Harrault, and O. Tuske. "Plasma studies on electron cyclotron resonance light ion source at CEA/Saclay." Review of Scientific Instruments 83, no. 2 (2012): 02A349. http://dx.doi.org/10.1063/1.3680548.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!