UCRL Codes for Motion of Astronomical Objects in the Solar System (open access)

UCRL Codes for Motion of Astronomical Objects in the Solar System

From abstract: "This progress report describes four IBM 704 codes developed and used by UCRL, Livermore, to investigate the motion of any object in the force fields of the sun and any or all of the planets and their satellites."
Date: June 2, 1958
Creator: Levee, Richard & Brady, Joseph L.
System: The UNT Digital Library
Analysis of P-P Scattering Experiments Below 40 Mev (open access)

Analysis of P-P Scattering Experiments Below 40 Mev

The following document presents an analysis on a phase-shift of p-p scattering with various measurements in Mev.
Date: June 16, 1958
Creator: MacGregor, Malcolm H.
System: The UNT Digital Library
Fast Neutron Effects on Du Pont 1290 Film (open access)

Fast Neutron Effects on Du Pont 1290 Film

Abstract: "Fast neutron effects on a widely used x-ray film have been investigated. The neutron flux was provided by the (d, t) reaction of a Cockcroft-Walton accelerator. Integrated exposures to 10-10 n/cm-2 were given the film. It was found that perturbations on film that were pre-exposed to Co-60 gamma rays from 10 to 2000 r were negligible. Simultaneous exposure of neutrons plus gammas also indicated negligible effect on the film insofar as the gamma dose was concerned."
Date: June 13, 1958
Creator: Block, Seymour & Hughes, Lewis
System: The UNT Digital Library
Variation with Electron Temperature of the Intensity Ratio of a Pair of Helium Spectral Lines (open access)

Variation with Electron Temperature of the Intensity Ratio of a Pair of Helium Spectral Lines

Abstract: "The dependence on mean electron kinetic energy of the ratio of intensities of [lambda]5015[HeI] and [lambda]4686[HeII] has been calculated. A low-density plasma is considered, the principal assumptions being that the reaction processes are governed by electron collisions and the electron energy distribution is Maxwellian. The results show a fairly large variation of the intensity ratio within the range of 3 to 7 ev."
Date: June 19, 1958
Creator: Howard, John C.
System: The UNT Digital Library
The Electrostatic Potential About an Atomic Nucleus in an Ionized Gas (open access)

The Electrostatic Potential About an Atomic Nucleus in an Ionized Gas

From introduction: "The object of this paper is to derive a simple approximate expression for the average potential about an atomic nucleus in an ionized gas. It was desired that the expression be simple in the sense that its analytic form would be convenient in Born approximation calculations. It was also desired that the results would be valid over a large range of temperature and density for all elements with perhaps the exception of those with low atomic number."
Date: June 1958
Creator: Kidder, R. E.
System: The UNT Digital Library
Development of Switching Components for Controlled Fusion Research (open access)

Development of Switching Components for Controlled Fusion Research

Abstract: "Components for switching large stored energies have been under development at the University of California Radiation Laboratory at Livermore. Applications and problems are discussed. Work has been done on a low inductance ignitron. A test and development program of 5550 type 2" ignitrons has led to a tube good at 10 kv for pulses of 30 ka with a decay time of 500 μs. Times for transfer of the arc to the wall have been measured for several types of ignitrons. A 4"-insulated cathode ignitron has been developed for pulses of 10 ka for 20 ms. The firing delay and jitter of 2" ignitrons has been found to be as low as 0.25 μs and 0.06 μs, respectively."
Date: June 1958
Creator: Cummings, David B.
System: The UNT Digital Library
Summary of UCRL Pyrotron (Mirror Machine) Program (open access)

Summary of UCRL Pyrotron (Mirror Machine) Program

"This report presents some of the theory of operation of the Mirror Machine, and summarizes the experimental work which has been carried out...The modus operandi of the Mirror Machine is to create, heat and control a high temperature plasma by means of externally generating magnetic fields."
Date: June 27, 1958
Creator: Post, Richard F.
System: The UNT Digital Library
Photosynthesis (open access)

Photosynthesis

The problem of photosynthesis is the problem of defining the way in which green plants are able to convert electromagnetic energy into chemical potential in the form of reduced carbon, usually as carbohydrate, and molecular oxygen. The use of tracer carbon, as carbon-14, has made possible considerable progress in the mapping of the routes taken by the carbon atom from CO2 into plant substances. The techniques of separation and identification that have made this progress possible lie largely in the region of chromatography and radioautography involving fractional-gamma amounts of material. A number of proposals have been made about the photochemical act itself. These proposals have led to the development of direct physical tests of their validity, and some results of these will be described.
Date: June 1958
Creator: Calvin, Melvin, 1911-1997
System: The UNT Digital Library
Decay Modes Of Charged [Sigma] Hyperons (open access)

Decay Modes Of Charged [Sigma] Hyperons

Apparent [Sigma] hyperon decay events in a large emulsion stack of 240 9" x 12" pellicles have been classified into those judged to have occurred at rest and those in flight. Of 36 decay events at rest, 21 secondaries were observed to be protons of about 1675 microns range. Of the events decaying in flight, 23 were decays into protons and 46 were decays into near-minimum secondaries. Attempts have been made to trace the tracks of 35 of the lightly ionizing secondaries; the results of this effort are summarized in a table.
Date: June 23, 1958
Creator: Barkas, Walter H. (Walter Henry), 1912-1969; Dyer, J. N.; Giles, P. C.; Heckman, Harry H.; Mason, C. J.; Nickols, N. A. et al.
System: The UNT Digital Library