# Journal of Plasma Physics Impact Factor & Information

Publisher: Cambridge University Press (CUP)

## Journal description

Journal of Plasma Physics publishes primary research articles in plasma physics both theoretical and experimental and its applications. Basic topics include the fundamental physics of plasmas ionization kinetic theory particle orbits stochastic dynamics wave propagation solitons stability shock waves transport heating and diagnostics. Applications include fusion laboratory plasmas and communications devices laser plasmas technological plasmas space physics and astrophysics.

## Impact Factor Rankings

2015 Impact Factor Available summer 2015 0.739 0.755 0.944 1.078 0.775 0.579 0.661 0.748 1.037 0.602 0.61 0.645 0.649 0.837 0.761 0.85 0.516 0.661 0.552 0.615 0.712 0.489

## Impact factor over time

Impact factor
.
Year

5-year impact 0.75 0.00 0.41 0.00 0.33 Journal of Plasma Physics website Journal of plasma physics 0022-3778 1754745 Periodical, Internet resource Journal / Magazine / Newspaper, Internet Resource

## Publisher details

• Pre-print
• Author can archive a pre-print version
• Post-print
• Author can archive a post-print version
• Conditions
• Author's Pre-print on author's personal website, departmental website, social media websites, institutional repository, non-commercial subject-based repositories, such as PubMed Central, Europe PMC or arXiv
• Author's post-print on author's personal website on acceptance of publication
• Author's post-print on departmental website, institutional repository, non-commercial subject-based repositories, such as PubMed Central, Europe PMC or arXiv, after a 6 months embargo
• Publisher's version/PDF cannot be used
• Published abstract may be deposited
• Pre-print to record acceptance for publication
• Publisher copyright and source must be acknowledged with set statement, for deposit of Authors Post-print or Publisher's version/PDF
• Must link to publisher version
• Publisher last reviewed on 07/10/2014
• This policy is an exception to the default policies of 'Cambridge University Press (CUP)'
• Classification
​ green

## Publications in this journal

• ##### Article: X-ray free-electron laser studies of dense plasmas
[Hide abstract]
ABSTRACT: The high peak brightness of X-ray free-electron lasers (FELs), coupled with X-ray optics enabling the focusing of pulses down to sub-micron spot sizes, provides an attractive route to generating high energy-density systems on femtosecond time scales, via the isochoric heating of solid samples. Once created, the fundamental properties of these plasmas can be studied with unprecedented accuracy and control, providing essential experimental data needed to test and benchmark commonly used theoretical models and assumptions in the study of matter in extreme conditions, as well as to develop new predictive capabilities. Current advances in isochoric heating and spectroscopic plasma studies on X-ray FELs are reviewed and future research directions and opportunities discussed.
Journal of Plasma Physics 10/2015; 81(05). DOI:10.1017/S0022377815000902
• ##### Article: Maser gain determined by the spatial profile of work done by an average electron and the wavelength of density fluctuation driven by the maser field in multi-photon free-electron two-quantum Stark radiation
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ABSTRACT: We find that the electron in an electron–cyclotron maser (ECM) of Nc = n1/3λ ≫ 1, where n and λ are the electron density and the maser wavelength, respectively, can only lower its energy through masing transition. From this fact and the application of Heisenberg's uncertainty principle on photon emission, we infer that until the electron energy becomes lower to pass through the width of uncertainty in the electron energy, the interval time Tint between two successive radiative transitions is zero. Hence, we find that if the number Nt of radiative transitions during the laser period T under the assumption of Tint = 0 is far larger than the number Nu of radiative transitions required to pass through the half-width ΔE of uncertainty in the electron energy, the radiation power from an electron is equal to ΔE/T. We deduce that the shift in the energy level of an average electron is predominantly produced by the density-deviation mode driven by the laser field so as to be spatially sinusoidal with period λw and amplitude \$\mathcal W\$. We recognize that the uncertainty in the z position of an electron emitting a laser photon through free-electron two-quantum Stark (FETQS) radiation is the wavelength λe of the electric wiggler. Thus, if λw ≪ λe, then ΔE is equal to \$\mathcal W\$. Based on the above findings, we identify electron–cyclotron masing in a high-density ECM as a gyration-driven FETQS radiation whose power is given by P = ΔE/T, where ΔE is not caused by gyration but rotation around the waveguide axis. The gain calculated based on this identification agrees with the measured one.
Journal of Plasma Physics 08/2015; 81(04):1-16. DOI:10.1017/S0022377815000367
• ##### Article: Experimental observation of hot tail runaway electron generation in TEXTOR disruptions
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ABSTRACT: Experimental evidence supporting the theory of hot tail runaway electron (RE) generation has been identified in TEXTOR disruptions. With higher temperature, more REs are generated during the thermal quench. Increasing the RE generation by increasing the temperature, an obvious RE plateau is observed even with low toroidal magnetic field (1.7 T). These results explain the previously found electron density threshold for RE generation.
Journal of Plasma Physics 08/2015; 81(04):1-10. DOI:10.1017/S0022377815000380
• ##### Article: Toroidal equilibrium states with reversed magnetic shear and parallel flow in connection with the formation of Internal Transport Barriers
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ABSTRACT: We construct nonlinear toroidal equilibria of fixed diverted boundary shaping with reversed magnetic shear and flows parallel to the magnetic field. The equilibria have hole-like current density and the reversed magnetic shear increases as the equilibrium nonlinearity becomes stronger. Also, application of a sufficient condition for linear stability implies that the stability is improved as the equilibrium nonlinearity correlated to the reversed magnetic shear gets stronger with a weaker stabilizing contribution from the flow. These results indicate synergetic stabilizing effects of reversed magnetic shear, equilibrium nonlinearity and flow in the establishment of Internal Transport Barriers (ITBs).
Journal of Plasma Physics 08/2015; 81(04):1-14. DOI:10.1017/S0022377815000343
• ##### Article: Ball lightning with the nonrelativistic electrons of the core
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ABSTRACT: The lifetimes, volume densities of energy, electron and ion densities and other parameters of ball lightning cores with the nonrelativistic electrons are estimated. The model according to which the motion of the electrons of the ball lightning core is the superposition of the oscillatory motion and the thermal motion in the directions perpendicular to those of the oscillations is proposed. Some problems related to isolation of the ball lightning core from the atmosphere and the transfer of the atmospheric pressure on it are considered.
Journal of Plasma Physics 08/2015; 81(04):1-18. DOI:10.1017/S0022377815000410
• Source
##### Article: Special issue: Macroscopic randomness in astrophysical plasmas: The legacy and vision of Ya. B. Zeldovich
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ABSTRACT: This issue commemorates an outstanding scientist of the twentieth century, Yakov Borisovich Zeldovich, in connection with the centenary of his birth (8 March 1914), with a collection of reviews and research articles broadly related to large-scale random phenomena in astrophysical plasmas.
Journal of Plasma Physics 08/2015; 81(04):1-3. DOI:10.1017/S0022377815000355
• ##### Article: Intermittency and random matrices
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ABSTRACT: A spectacular phenomenon of intermittency, i.e. a progressive growth of higher statistical moments of a physical field excited by an instability in a random medium, attracted the attention of Zeldovich in the last years of his life. At that time, the mathematical aspects underlying the physical description of this phenomenon were still under development and relations between various findings in the field remained obscure. Contemporary results from the theory of the product of independent random matrices (the Furstenberg theory) allowed the elaboration of the phenomenon of intermittency in a systematic way. We consider applications of the Furstenberg theory to some problems in cosmology and dynamo theory.
Journal of Plasma Physics 08/2015; 81(04):1-13. DOI:10.1017/S0022377815000458
• ##### Article: Cold atmospheric plasma activity on microorganisms. A study on the influence of the treatment time and surface
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ABSTRACT: The second half of the 20th century can be characterized and named as the ‘plasma era’, as the plasma gathered scientific interest because of its special physical behaviour. Thus, it was considered as the fourth material state and the plasma physics began to form consequently. In addition to this, many important applications of plasma were discovered and put to use. Especially, in last few decades, there has been an increased interest in the use of cold atmospheric plasma in bio-chemical applications. Until now, thermal plasma has been commonly used in many bio-medical and other applications; however, more recent efforts have shown that plasma can also be produced at lower temperature (close to the environment temperature) by using ambient air in an open space (in atmospheric pressure). However, two aspects remain neglected: firstly, low-temperature plasma production with a large area, and secondly, acquiring the necessary knowledge and understanding the relevant interaction mechanisms of plasma species with microorganisms. These aspects are currently being investigated at the ‘Demokritos’ Plasma Laboratory in Athens, Greece with radio frequency (27.12 MHz and it integer harmonics)-driven sub-atmospheric pressure plasma (100 Pa). The first aspect was achieved with atmospheric plasma being produced at a low temperature (close to the environment temperature) and in a large closed space systems. Regarding the plasma effect on living microorganisms, preliminary experiments and findings have already been carried out and many more have been planned for the near future.
Journal of Plasma Physics 08/2015; 81(04):1-14. DOI:10.1017/S002237781500032X
• ##### Article: Measurement of the angle, temperature and flux of fast electrons emitted from intense laser–solid interactions
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ABSTRACT: High-intensity laser–solid interactions generate relativistic electrons, as well as high-energy (multi-MeV) ions and x-rays. The directionality, spectra and total number of electrons that escape a target-foil is dependent on the absorption, transport and rear-side sheath conditions. Measuring the electrons escaping the target will aid in improving our understanding of these absorption processes and the rear-surface sheath fields that retard the escaping electrons and accelerate ions via the target normal sheath acceleration (TNSA) mechanism. A comprehensive Geant4 study was performed to help analyse measurements made with a wrap-around diagnostic that surrounds the target and uses differential filtering with a FUJI-film image plate detector. The contribution of secondary sources such as x-rays and protons to the measured signal have been taken into account to aid in the retrieval of the electron signal. Angular and spectral data from a high-intensity laser–solid interaction are presented and accompanied by simulations. The total number of emitted electrons has been measured as with an estimated total energy of from a Cu target with 140 J of incident laser energy during a interaction.
Journal of Plasma Physics 07/2015; 81(05):475810505. DOI:10.1017/S0022377815000835
• ##### Article: Generation of zonal fow and magnetic field in the ionospheric E-layer
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ABSTRACT: We review the generation of zonal flow and magnetic field by coupled electromagnetic ultra-low-frequency waves in the Earth’s ionospheric E-layer. It is shown that, under typical ionospheric E-layer conditions, different planetary low-frequency waves can couple with each other. Propagation of coupled internal-gravity–Alfvén, coupled Rossby–Khantadze and coupled Rossby–Alfvén–Khantadze waves is revealed and studied. A set of appropriate equations describing the nonlinear interaction of such waves with sheared zonal flow is derived. The conclusion on the instability of short-wavelength turbulence of such coupled waves with respect to the excitation of low-frequency and large-scale perturbation of the sheared zonal flow and sheared magnetic field is deduced. The nonlinear mechanism of the instability is based on the parametric triple interaction of finite-amplitude coupled waves leading to the inverse energy cascade towards longer wavelength. The possibility of generation of an intense mean magnetic field is shown. Obtained growth rates are discussed for each case of the considered coupled waves.
Journal of Plasma Physics 07/2015; 81(905810512). DOI:10.1017/S002237781500080X
• ##### Article: Nonlinear third harmonic radiation in thermal free electron laser with modified wiggler
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ABSTRACT: Simulation of free electron laser (FEL) with modified wiggler consisting of a conventional planar wiggler with third harmonic field component is presented. A set of self consistent nonlinear differential equations is derived and solved numerically by Runge-Kutta method. The optimum amplitudes of fundamental and third harmonic wiggler filed are obtained to increase the third harmonic radiation in comparison with conventional wiggler and also to have lower electron beam energy compared to conventional wiggler with the same wavelength. For the thermal effect the axial energy spread of electron beam, without any spread in the transverse velocity, is assumed. A peculiar region is found in which there is a sharp increase of the radiation amplitude. Thermal effect of the electron beam was found to be irregular in this peculiar region.
Journal of Plasma Physics 06/2015; 81(03):1-12. DOI:10.1017/S0022377814001159