Reprint here
... 0.9 cm, the device in these tests has a B field 2.2 times less than, for example, our own FF-1 device at 1 MA. The large decreases in density that accompanied the destruction of the filaments are therefore not expected to occur. Reinforcing this conclusion, we find the pre-ionization yield of 4 10 ...
... 0.9 cm, the device in these tests has a B field 2.2 times less than, for example, our own FF-1 device at 1 MA. The large decreases in density that accompanied the destruction of the filaments are therefore not expected to occur. Reinforcing this conclusion, we find the pre-ionization yield of 4 10 ...
Kein Folientitel
... is a complex function. It is convenient to assume that the frequency is also complex: (k) = r(k) + i(k) . For small growth rate the dispersion relation can be expanded in the complex plane about the real axis such that ...
... is a complex function. It is convenient to assume that the frequency is also complex: (k) = r(k) + i(k) . For small growth rate the dispersion relation can be expanded in the complex plane about the real axis such that ...
**** 1
... To understand correlation between 3D magnetic field structure and effective plasma boundary, correlation lengths ( LC and Lk) and electron mean free path le are studied. ...
... To understand correlation between 3D magnetic field structure and effective plasma boundary, correlation lengths ( LC and Lk) and electron mean free path le are studied. ...
Driven reconnection and bursty bulk flows
... where 81,2 is given by Eqs. (9) and (10). For γ < 0, the driven reconnection lasts for a very brief period and hence it is termed as a bursty type of reconnection. For the parameters of the near-Earth plasma, |γ | is typically of the order of one minute or so. The numerical simulation of driven reco ...
... where 81,2 is given by Eqs. (9) and (10). For γ < 0, the driven reconnection lasts for a very brief period and hence it is termed as a bursty type of reconnection. For the parameters of the near-Earth plasma, |γ | is typically of the order of one minute or so. The numerical simulation of driven reco ...
Ball Lightning - Auguste Meessen
... explosion would then depend on the density of charged particles in the partially ionized surrounding air. It has often been observed that BL exploded when it entered another room or open chimney. The air could there contain more charged particles than necessary for survival of the moving BL. Extinct ...
... explosion would then depend on the density of charged particles in the partially ionized surrounding air. It has often been observed that BL exploded when it entered another room or open chimney. The air could there contain more charged particles than necessary for survival of the moving BL. Extinct ...
Longitudinal Asymmetry of the Jovian Magnetosphere
... configurationthat oscillateddiurnally about the ecliptic plane plasma source.This longitudinally asymmetricdistributionof (and hencepast the spacecraft),owing to the tilt angle between magnetosphericplasma produces a 10-hour variation in the the spin axis and the magnetic axis of Jupiter (Figure 1). ...
... configurationthat oscillateddiurnally about the ecliptic plane plasma source.This longitudinally asymmetricdistributionof (and hencepast the spacecraft),owing to the tilt angle between magnetosphericplasma produces a 10-hour variation in the the spin axis and the magnetic axis of Jupiter (Figure 1). ...
Mass spectrometry and iccd analysis of coupled and uncoupled mode in a gatling-gun like plasma source
... in the coupling phenomenon. ICCD acquisitions also show higher emission intensity in coupled than uncoupled mode and differences in plasma front propagation. This work presents new insights on the Gatling-like plasma sources and more in general on the jet-to-jet coupling phenomenon suggesting that t ...
... in the coupling phenomenon. ICCD acquisitions also show higher emission intensity in coupled than uncoupled mode and differences in plasma front propagation. This work presents new insights on the Gatling-like plasma sources and more in general on the jet-to-jet coupling phenomenon suggesting that t ...
Nonresonant beat-wave excitation of relativistic plasma
... much higher than the resonant density. Experimentally, we have shown that such high accelerating fields can be excited in plasmas with densities up to 14n res . We have diagnosed these fields through collinear Thomson scattering of a probe laser beam and by measuring the energy gained by externally ...
... much higher than the resonant density. Experimentally, we have shown that such high accelerating fields can be excited in plasmas with densities up to 14n res . We have diagnosed these fields through collinear Thomson scattering of a probe laser beam and by measuring the energy gained by externally ...
Development of Economic Spherical IEC Fusion Device
... In the early 1900’s, research on the theory of quantum tunneling, as well as experiments discerning the masses of light elements, led to the discovery that large amounts of energy can be produced by fusing light nuclei. This release in energy can be attributed to the relative strengths of the Coulom ...
... In the early 1900’s, research on the theory of quantum tunneling, as well as experiments discerning the masses of light elements, led to the discovery that large amounts of energy can be produced by fusing light nuclei. This release in energy can be attributed to the relative strengths of the Coulom ...
Linköping University Post Print Faster-than-Bohm Cross-B Electron Transport in Strongly Pulsed Plasmas
... magnetic fields the configuration can be either parallel ("") or antiparallel ("#). Here, we have evaluated the magnetic field diffusion constant DB from the speeds and the profiles of the current sheaths. This yields four values of DB , two for "" bias and two for "# . From these, Eq. (3) gives fou ...
... magnetic fields the configuration can be either parallel ("") or antiparallel ("#). Here, we have evaluated the magnetic field diffusion constant DB from the speeds and the profiles of the current sheaths. This yields four values of DB , two for "" bias and two for "# . From these, Eq. (3) gives fou ...
Electric potential differences across auroral generator interfaces
... components and hence their gyroradii are different, they will react to this electric field differently, which provokes charge separation. This, in turn, produces a polarization electric field that counteracts the charge separation. The present paper examines the role of the EEPD and of flow shear ac ...
... components and hence their gyroradii are different, they will react to this electric field differently, which provokes charge separation. This, in turn, produces a polarization electric field that counteracts the charge separation. The present paper examines the role of the EEPD and of flow shear ac ...
![Chapter 20: Particle Kinetics of Plasma [version 1220.1.K]](http://s1.studyres.com/store/data/002301794_1-5f49f2e75dc2dc8d81fa0b28a3afc171-300x300.png)
Chapter 20: Particle Kinetics of Plasma [version 1220.1.K]
... Coulomb scattering is so weak that, in most plasmas encountered in Nature, it is unlikely to produce isotropized or thermalized velocity distributions. In Sec. 20.5 we give a brief preview of the fact that in real plasmas the scattering of electrons and ions off collective plasma excitations (plasmo ...
... Coulomb scattering is so weak that, in most plasmas encountered in Nature, it is unlikely to produce isotropized or thermalized velocity distributions. In Sec. 20.5 we give a brief preview of the fact that in real plasmas the scattering of electrons and ions off collective plasma excitations (plasmo ...
On the possibility of negative electron mobility in a decaying plasma
... and the electron density becomes an exponentially decreasing function. In other words, after a certain time interval, the function F (u, t) takes the form F (u, t) = n(t)f (u) where n(t) ∼ exp(−νt) and ν corresponds to the attachment rate constant rate calculated from the established f0 (u). For a g ...
... and the electron density becomes an exponentially decreasing function. In other words, after a certain time interval, the function F (u, t) takes the form F (u, t) = n(t)f (u) where n(t) ∼ exp(−νt) and ν corresponds to the attachment rate constant rate calculated from the established f0 (u). For a g ...
Document
... estimate for v0 at Drude’s time 1 2 mv0 3 2 kBT → v0~107 cm/s → l ~ 1 – 10 Å consistent with Drude’s view that collisions are due to electron bumping into ions at low temperatures very long mean free path can be achieved l > 1 cm ~ 108 interatomic spacings! the electrons do not simply bump off the ...
... estimate for v0 at Drude’s time 1 2 mv0 3 2 kBT → v0~107 cm/s → l ~ 1 – 10 Å consistent with Drude’s view that collisions are due to electron bumping into ions at low temperatures very long mean free path can be achieved l > 1 cm ~ 108 interatomic spacings! the electrons do not simply bump off the ...
Part VII
... estimate for v0 at Drude’s time 1 2 mv0 3 2 kBT → v0~107 cm/s → l ~ 1 – 10 Å consistent with Drude’s view that collisions are due to electron bumping into ions at low temperatures very long mean free path can be achieved l > 1 cm ~ 108 interatomic spacings! the electrons do not simply bump off the ...
... estimate for v0 at Drude’s time 1 2 mv0 3 2 kBT → v0~107 cm/s → l ~ 1 – 10 Å consistent with Drude’s view that collisions are due to electron bumping into ions at low temperatures very long mean free path can be achieved l > 1 cm ~ 108 interatomic spacings! the electrons do not simply bump off the ...
Investigation of Atmospheric Pressure Plasma Source for CO Dissociation
... amounts of CO2 (>100 sccm), the power must remain at 1000 W or greater. Below this threshold, the plasma extinguishes from lack of electrons. As CO2 is introduced into the discharge the energy switches to vibrational excitation of CO2 rather than ionization. Since Ar is easily ionized, it is used as ...
... amounts of CO2 (>100 sccm), the power must remain at 1000 W or greater. Below this threshold, the plasma extinguishes from lack of electrons. As CO2 is introduced into the discharge the energy switches to vibrational excitation of CO2 rather than ionization. Since Ar is easily ionized, it is used as ...
"Low-order longitudinal modes of single-component plasmas" Physics of Plasmas 2 (1995), pp. 2880-2894. M. D. Tinkle, R. G. Greaves, and C. M. Surko (PDF)
... probesused for neutral plasmasnor the destructivediagnostics used for electron plasmasare desirable.The sametechniques could also be used to monitor antiproton plasmas30*31 or as an adjunct to the usual techniquesfor electron plasma experiments.The propertiesof positron plasmasare the same as those ...
... probesused for neutral plasmasnor the destructivediagnostics used for electron plasmasare desirable.The sametechniques could also be used to monitor antiproton plasmas30*31 or as an adjunct to the usual techniquesfor electron plasma experiments.The propertiesof positron plasmasare the same as those ...
Isolated Attosecond Pulses from Laser
... ionic restoring force results in their escape into the vacuum at the front surface of plasmas, where the ionic binding potential gradually vanishes and gives birth to high-order harmonic generation or isolated XUV and x-ray pulses. Here, we demonstrate the basic idea for the simplest, normal inciden ...
... ionic restoring force results in their escape into the vacuum at the front surface of plasmas, where the ionic binding potential gradually vanishes and gives birth to high-order harmonic generation or isolated XUV and x-ray pulses. Here, we demonstrate the basic idea for the simplest, normal inciden ...
Stopping power of ions in a strongly magnetized plasma
... The stopping power of ions in a magnetized plasma is an important quantity for the electron cooling of ion beams,1,2 a technique used in accelerator physics to reduce the phase space volume of ion beams. The cooling process is based on the energy loss due to Coulomb interaction of the ions in a supe ...
... The stopping power of ions in a magnetized plasma is an important quantity for the electron cooling of ion beams,1,2 a technique used in accelerator physics to reduce the phase space volume of ion beams. The cooling process is based on the energy loss due to Coulomb interaction of the ions in a supe ...
ICEFA - authors
... use the well-known solution of the Boltzmann equation due to Chapmann and Enskog [13, 14]. This assumes two-body interactions between chemical species. This interaction can be described by a potential interaction between two particles. By successive integrations of these potentials, we obtain collis ...
... use the well-known solution of the Boltzmann equation due to Chapmann and Enskog [13, 14]. This assumes two-body interactions between chemical species. This interaction can be described by a potential interaction between two particles. By successive integrations of these potentials, we obtain collis ...
Nanosecond plasma enhanced H2/O2/N2 premixed flat
... model with detailed plasma-combustion kinetics to develop additional insight into the complex plasma and flame interactions. Good agreement between measured and predicted OH and temperature profiles provides confidence in the model framework. The reduced electric field, E/N, during each pulse varies ...
... model with detailed plasma-combustion kinetics to develop additional insight into the complex plasma and flame interactions. Good agreement between measured and predicted OH and temperature profiles provides confidence in the model framework. The reduced electric field, E/N, during each pulse varies ...
ICP Background - Center for Applied Isotope Studies
... in an ICP-MS consists of two (or more) metal cone-shaped disks with a single hole in the center of each. The small diameter of the hole allows for sampling of ions concentrated at the center of the plasma—herein lies one of the limitations of ICPMS as the small diameter of the cones inherently req ...
... in an ICP-MS consists of two (or more) metal cone-shaped disks with a single hole in the center of each. The small diameter of the hole allows for sampling of ions concentrated at the center of the plasma—herein lies one of the limitations of ICPMS as the small diameter of the cones inherently req ...
The interaction of stationary and moving objects with dusty plasmas
... v e,th is the electron thermal speed. With A528 cm2 and v e,th '53107 cm/sec ~corresponding to an electron temperature T e '2 eV! we obtain n'23107 cm23. This together with a T e '2 eV and an ion temperature T 1 '0.02– 0.03 eV results in a plasma Debye length, l p '0.03 cm. An important parameter of ...
... v e,th is the electron thermal speed. With A528 cm2 and v e,th '53107 cm/sec ~corresponding to an electron temperature T e '2 eV! we obtain n'23107 cm23. This together with a T e '2 eV and an ion temperature T 1 '0.02– 0.03 eV results in a plasma Debye length, l p '0.03 cm. An important parameter of ...
Magnetic Field Line Reconnection Experiments, 1. Field Topologies
... point in the center.The time scaleduringwhich the applied magneticfield risesis larger than the Affv6n transit time from boundariesto the neutral point but short comparedwith the resistive diffusion time for the correspondingdistance. The magnetic Reynolds number is Rm •- 20. While the electrons are ...
... point in the center.The time scaleduringwhich the applied magneticfield risesis larger than the Affv6n transit time from boundariesto the neutral point but short comparedwith the resistive diffusion time for the correspondingdistance. The magnetic Reynolds number is Rm •- 20. While the electrons are ...
Word - Contemporary Physics Education Project
... 3. Since the magnetic force on the current will always be perpendicular to both the direction of the current and the direction of magnetic field, the simplest result would be circular motion as illustrated in the figure. However, what you see is a deflection of the current (located as the glowing pl ...
... 3. Since the magnetic force on the current will always be perpendicular to both the direction of the current and the direction of magnetic field, the simplest result would be circular motion as illustrated in the figure. However, what you see is a deflection of the current (located as the glowing pl ...
Plasma (physics)
Plasma (from Greek πλάσμα, ""anything formed"") is one of the four fundamental states of matter, the others being solid, liquid, and gas. A plasma has properties unlike those of the other states.A plasma can be created by heating a gas or subjecting it to a strong electromagnetic field applied with a laser or microwave generator. This decreases or increases the number of electrons, creating positive or negative charged particles called ions, and is accompanied by the dissociation of molecular bonds, if present.The presence of a significant number of charge carriers makes plasma electrically conductive so that it responds strongly to electromagnetic fields. Like gas, plasma does not have a definite shape or a definite volume unless enclosed in a container. Unlike gas, under the influence of a magnetic field, it may form structures such as filaments, beams and double layers.Plasma is the most abundant form of ordinary matter in the Universe (the only matter known to exist for sure, the more abundant dark matter is hypothetical and may or may not be explained by ordinary matter), most of which is in the rarefied intergalactic regions, particularly the intracluster medium, and in stars, including the Sun. A common form of plasmas on Earth is seen in neon signs.Much of the understanding of plasmas has come from the pursuit of controlled nuclear fusion and fusion power, for which plasma physics provides the scientific basis.