5 Matching Results

Search Results

Results: 1 - 5
open access

Imaging system for obtaining space- and time-resolved plasma images on TMX

Description: A Reticon 50 x 50 photodiode array camera has been placed on Livermore's Tandem Mirror Experiment to view a 56-cm diameter plasma source of visible, vacuum-ultraviolet, and x-ray photons. The compact camera views the source through a pinhole, filters, a fiber optic coupler, a microchannel plate intensifier (MCPI), and a reducer. The images are digitized (at 3.3 MHz) and stored in a large, high-speed memory that has a capacity of 45 images. A local LSI-11 microprocessor provides immediate proces… more
Date: April 8, 1980
Creator: Koehler, H.A. & Frerking, C.E.
Partner: UNT Libraries Government Documents Department
open access

Study of optical model parameters for high energy neutron cross sections from 5 to 50 MeV in the mass-140 region

Description: A study of the neutron optical potential on nuclei near mass-140 was begun to extend the energy range and improve the precision of previous neutron total cross section measurements. The extended energy range of this measurement reveals maxima and minima in the total cross section that are evidence of the nuclear Ramsauer effect. A 100-MeV linear accelerator is used to produce a continuum of neutron energies from a Ta-Be conversion target. A 250-meter flight path is used to measure neutron energ… more
Date: May 8, 1980
Creator: Phillips, T.W.; Camarda, H.S. & White, R.M.
Partner: UNT Libraries Government Documents Department
open access

Monte Carlo calculation of flux-to-dose-rate conversion factors for energies between 0. 01 and 1. 00 MeV

Description: Gamma-ray flux-to-dose-rate conversion factors for energies between 0.01 and 1.0 MeV were computed using the Monte Carlo method for a 30-cm-thick slab having the standard-man composition. Agreement between the computed factors and standard factors (ANSI/ANS-6.1.1-1977) was optimal for energies above 0.1 MeV and was at most 30% lower (at 0.02 MeV) for energies below 0.1 MeV. The computed factors were also in agreement with experimentally-obtained factors.
Date: December 8, 1980
Creator: Tapia, C.S.
Partner: UNT Libraries Government Documents Department
open access

Parametric study of a target factory for laser fusion

Description: An analysis of a target factory leading to the derivation of production rate equations has provided the basis for a parametric study. Rate equations describing the production of laser fusion targets have been developed for the purpose of identifying key parameters, attractive production techniques and cost scaling relationships for a commercial target factory.
Date: October 8, 1980
Creator: Sherohman, J. W. & Meier, W. R.
Partner: UNT Libraries Government Documents Department
open access

Dependence of strength on particle size in graphite

Description: The strength to particle size relationship for specially fabricated graphites has been demonstrated and rationalized using fracture mechanics. In the past, similar studies have yielded empirical data using only commercially available material. Thus, experimental verification of these relationships has been difficult. However, the graphites of this study were fabricated by controlling the particle size ranges for a series of isotropic graphites. All graphites that were evaluated had a constant 1… more
Date: June 8, 1980
Creator: Kennedy, E. P. & Kennedy, C. R.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen