An "Exact" Analysis of a Cylindrical Plasma in a Magnetic Field (open access)

An "Exact" Analysis of a Cylindrical Plasma in a Magnetic Field

Abstract: "The analysis of an immobilized plasma is here extended to the case where the geometry is cylindrical rather than Cartesian. (This report, UCRL-4439 (Rev, 4 constitutes Part II of the report series (UCRL-4466, Parts I, III, and IV) dealing with this general problem.)"
Date: January 14, 1955
Creator: Tonks, Lewi, 1897-1971
System: The UNT Digital Library
The Elimination of Microwave Reflections (open access)

The Elimination of Microwave Reflections

Abstract: "The reflections of microwaves from the walls of a plasma-containing vessel are studied. The probable cause of the reflections is discussed, and several suggestions are made for eliminating the reflections from the waveguide in the vessel and particularly from the pyrex vessel wall and copper tubing surrounding the pyrex. Quarter-wave-thick carbon-filled plastics or glasses having a very low vapor pressure room most promising when placed inside the pyrex cylinder. BaTiO3 appears to be an excellent material when placed outside the vacuum."
Date: February 1, 1955
Creator: Beard, David
System: The UNT Digital Library
High-Energy Peripheral Injection into Mirror Machines (open access)

High-Energy Peripheral Injection into Mirror Machines

The following report proposes various methods in injecting and heating in mirror machines, using high-energy ion beams.
Date: September 22, 1955
Creator: Linlor, William I., 1915-
System: The UNT Digital Library
Transient Temperature Variations During the Self-Heating of a Plasma by Thermonuclear Reactions (open access)

Transient Temperature Variations During the Self-Heating of a Plasma by Thermonuclear Reactions

Abstract: "The possibility of transient temperature variations during the self-heating of a plasma by thermonuclear reactions was investigated. Calculations were performed on an IBM Card Program Calculator. Estimates of the time scale for self-heating were obtained. It was concluded that it would be unsafe to assume that the nuclear temperature is always equal to or greater than the electron temperature in a discussion of plasma instabilities for a plasma with 10 percent or greater tritium concentration."
Date: March 21, 1955
Creator: Greyber, Howard D.
System: The UNT Digital Library
Microwave Diagnostics in ARC Research : On Determination of Physical Quantities of Gas Discharges in Ion-containment Machines by Measurement of Microwave Propagation Coefficient (open access)

Microwave Diagnostics in ARC Research : On Determination of Physical Quantities of Gas Discharges in Ion-containment Machines by Measurement of Microwave Propagation Coefficient

This report describes a method used to determine semi-quantitatively the time-varying plasma density in magnetic mirror machines by microwave phase-shift and attenuation measurement.
Date: April 1955
Creator: Post, Richard F.; Prosser, T. F. & Wharton, C. B.
System: The UNT Digital Library
Magnetic Acceleration of a Plasma by a Rail Source (open access)

Magnetic Acceleration of a Plasma by a Rail Source

Abstract: "Two parallel wires close together with an arc between them form a hairpin-type of current configuration which should magnetically propel the plasma of the arc. By the time-of-flight measurements with probes it has been demonstrated that directed translational energies of 290 ev can be imparted to deuterons in a plasma produced by a high-current pulsed arc at the tips of two titanium wires loaded with deuterium. It is believed that three deuterons are actually magnetically propelled."
Date: March 18, 1955
Creator: Bostick, Winston H.
System: The UNT Digital Library
Energetic Neutral Injection into Thermonuclear Machines (open access)

Energetic Neutral Injection into Thermonuclear Machines

Abstract: "A scheme is discussed in which D+ ions would be accelerated to about 100 kev in a conventional accelerator, then be sent through a gas target frmo which about half the ions would emerge neutral with very little scattering or energy loss; the neutral beam would then cross into a magnetic field and part of the atoms would be ionized and trapped by colliding with the already trapped ions. The smallest mirror machine with a central field of 30-40 kilogauss, 2;1 mirror ratio and β = 01 to 0.5 that would trap most of the neutral beam in the steady state, would be about a meter in diameter and require the order of hundreds of amperes of D+ ions into the neutralizer. The smallest stellerator with a field of 30 kilogauss and β = 0.1 that would trap most of the neutral beam would be about a meter long and require about 10 amperes of D+ ions. A preliminary mirror machine experiment that might be done using the 1/2-ampere, 100-kev D+ beam from the UCRL spare MTA injector is discussed. A method of starting these machine is discussed."
Date: August 10, 1955
Creator: Lauer, Eugene J.
System: The UNT Digital Library
Adiabatic Injection (open access)

Adiabatic Injection

From introduction comments: The present analysis is intended to examine the relations for "adiabatic" injection in general from a different point of view.
Date: September 22, 1955
Creator: Linlor, William I., 1915-
System: The UNT Digital Library
Initial Measurements on the Angular Distribution of Deuterium Plasma Produced by a Pulsed Spark Source (open access)

Initial Measurements on the Angular Distribution of Deuterium Plasma Produced by a Pulsed Spark Source

Abstract: "The deuterium plasma which is ejected by a 6000-ampere pulsed current through a rail-type spark source has a yield in the forward direction which is a factor of 5 to 10 greater than that in the perpendicular direction. This effect is believed to be due to the magnetic propulsion of the plasma."
Date: March 24, 1955
Creator: Bostick, W. H.
System: The UNT Digital Library