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The heating of thin foils with high power relativistic electron beam (R. E. B.) has been investigated some years ago [1 – 2]. KURCHATOV russian laboratory claimed to have obtain anomalous high energy density in the foil due to enhanced absorption of the beam. These experiments seem very promising for inertial confinement programs. The paper we present deals with interaction of an electron beam versus...
Irradiation of a target by short bunches of high energy heavy ions is one of the promising directions in the studies of thermonuclear fusion. For spherically symmetric irradiation it is necessary to produce a number of spatially separated bunches. For their successful focusing onto the target a sufficiently small common emittance should be provided. The full energy W of all accelerated particles should...
The use of intense electron beams for ignition of pulsed thermonuclear reaction necessitates the investigations of interaction of beams having current densities of order 107A/cm2 and more, with metal foils. The present work is an extension of experiments on interaction of beams with thin foils having been started on Triton and Angara-1 [1, 2]. The most essential characteristics of the interaction...
REB has its most advantages in efficient generation of beam of large energy and low cost in construction and operation comparing with high power lasers as the energy driver for ICF. It seems to be feasible in this sense to use REB as the driver for the practical ICF reactor. There are still many physical and technical problems to be investigated, beyond them the reactor can be designed. They are (1)...
An attractive feature of the high energy (> GeV) heavy ion beam approach to inertial fusion, as compared with other particle beam systems, is the relative simplicity involved in the transport and focusing of energy on the target inside a reactor chamber. While this focusing could be done in vacuum by conventional methods with multiple beams, there are significant advantages in reactor design if...
We have recently been successful with accelerating 50 mA of Xe+1 to 1.1 MeV in our modified Dynamitron in a pulse 100 µsec long. We anticipate conditioning the column to 1.5 MeV and bunching and accelerating the beam to 2 MeV in the first stages of the low velocity linac within the next few months. On the basis of the recommendations by a national committee (Foster II) reviewing inertial confinement...
The concept of heavy ion fusion experiment has been intensively discussed for these years[1–2]. All designs of the ion driver system investigated so far, are based on the requirements for the beam qualities given by the theoretical and numerical analyses of the D-T pellet dynamics: the total energy of 1 MJ at a peak power of 100 TW in a shaped pulse with a repetition rate of 1 Hz and an energy deposition...
Recent experiments have demonstrated that the magnetron geometry can be adapted for gigawatt power production by short-pulse (≤1 µsec) operation at high voltages (>0.2 MeV) [1–3]. The high powers were achieved by using field emission diodes. The slow-wave structures in these magnetrons had relatively few cavities and an anode-cathode separation substantially smaller than the periodic spacing of...
Computer simulations have been performed to study the injection of monoenergetic. electron beams with uniform number density into a evacuated cylindrical drift tube. An oscillating virtual cathode is produced by having, the injected current exceed the space-charge limiting current of the tube. The results of oscillation are readily noted downstream from the virtual cathode in two competing processes...
We have studied the force free equilibrium of an electron beam in a drift tube. We considered only radial force balance. The injection region which leads to longitudinal fields was taken into account only through the injected profiles of energy and current.
The development of effective transport and focussing methods for high current relativistic electron beams (REB) is of great importance for the use of such beams in controlled fusion experiments with inertial containment, in microwave generation etc. REB propagation for considerable distances is possible when the beam is contained by external magnetic fields or when it is neutralized by the REB proper...
Protons and deuterons produced in a pinch reflex diode are magnetically focused by the self-magnetic field of the ion current in the diode vacuum region and then focused ballistically in a gas filled drift region. With a flat diode geometry, peak ion powers approaching 1 TW (700 kA at 1.3 MV) have been produced corresponding to a 2/3 conversion efficiency of peak diode current to ion current. Ion...
The problem of electron beam fusion consists, in essence, in consecutively increasing the density and power of electromagnetic energy which in the final stage is delivered to the thermonuclear target by the electron beam. In any reactor design, the problem of transporting considerable portions of energy over comparatively long distances with maximum density and minimal losses remains.
Relativistic scattrons are among electron devices most perspective to master the short wavelength region [1 – 8]. One of modifications of the scattron is the ubitron, where the periodic static field is used BS the pump wave.
In the previous paper, Dr. Cooperstein discussed the techniques required to focus TW-level light ion beams extracted from pinch-reflex diodes to high current density [1–3]. In this paper, we consider several-meter transport of the focussed ion beam to inertial-confinement-fusion targets through a Z-discharge transport channel. This technique allows ion beams to be transported the distances required...
As can be seen from the interpretation in §3, the target for the adiabatic compression must have the multilayer structure or the tamper around the bare target in order to shorten the length of the deflagration wave. In the tamper, the electron number density of the background plasma must be large, because the interaction between the beam and the plasma depends on the electron number density. Thus...
At present there has been considerable interest in the production of the intense relativistic electron beams in foilless diode [1]. The given paper presents study of foilless diode performance in an uniform external magnetic field. There are considered axially symmetric systems only, the guide magnetic field being parallel to the axis of symmetry. Geometry of coaxial diode with an annular cathode...
In this paper, we point out that the direct fusion reactions between D beam ions and T ions in the target have a possibility to supply the enough energy to a fusion power reactor. We are now requested to develop a technique which extracts the intense ion beam and concentrates the beam on a small target.
Transmission of electric power in evacuated beam guides as proposed by K.I.Budker and further developed in [1,2] is of great interest for future industrial applications of electron beams. Without considering all aspects of the power transmission problem it should be pointed out that the most important condition for its implementation is the development of systems for providing stationary and quasi-stationary...
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