Final focus nomenclature (open access)

Final focus nomenclature

The formal names and common names for all devices in the final focus system of the SLC are listed. The formal names consist of a device type designator, microprocessor designator, and a four-digit unit number. (LEW)
Date: August 8, 1986
Creator: Erickson, R.
Object Type: Report
System: The UNT Digital Library
Subcycle-specific emergency cooling limits (open access)

Subcycle-specific emergency cooling limits

Assembly power limits are prescribed for each reactor charge so that the Emergency Cooling System (ECS) will prevent core damage from exceeding specified damage limits during a postulated loss-of-coolant (LOCA) or loss-of-pumping (LOPA) accident. Generic assembly power limits which include a 10% uncertainty factor have been determined for the Mark 16B-31 charge. However, future power limits will not be based on the values, because a new damage model is being developed. These limits can be determined at present if the minimum assembly flows during a LOCA are known.
Date: December 8, 1986
Creator: Giess, M J
Object Type: Report
System: The UNT Digital Library
Vibrational soliton: an experimental overview (open access)

Vibrational soliton: an experimental overview

To date the most convincing evidence of vibrational solitons in biopolymers has been found in two very disparate systems: Davydov-like excitations in hydrogen-bonded linear chains (acetanilide and N-methylacetamide) which are not biopolymers but plausible structural paradigms for biopolymers, and longitudinal accoustic modes of possibly nonlinear character in biologically viable DNA. 17 refs., 4 figs.
Date: March 8, 1986
Creator: Bigio, I.J.
Object Type: Article
System: The UNT Digital Library
Background radiation in the SLC ir from collimators and tune-up dumps in the ARCS (open access)

Background radiation in the SLC ir from collimators and tune-up dumps in the ARCS

There are various beam intercepting devices between the interaction point and the beam dumps of the SLC. Of these, the adjustable collimators, a fixed collimator, and the tune-up dumps are expected to intercept enough of the beam to warrant calculating the fluxes inside the interaction hall from them. The fluences of neutrons and photons in the interaction hall from these sources. Whether the beam has passed the interaction point or not is considered important in choosing a source term, primarily for photons. Neutron calculations are done only for giant resonance neutrons. (LEW)
Date: July 8, 1986
Creator: Jenkins, T.M.
Object Type: Report
System: The UNT Digital Library
Electrical conductivity and equation of state of liquid nitrogen, oxygen, benzene, and 1-butene shocked to 60 GPa (open access)

Electrical conductivity and equation of state of liquid nitrogen, oxygen, benzene, and 1-butene shocked to 60 GPa

Measurements are reported for the electrical conductivity of liquid nitrogen (N/sub 2/), oxygen (O/sub 2/) and benzene (C/sub 6/H/sub 6/), and Hugoniot equation of state of liquid 1-butene (C/sub 4/H/sub 8/) under shock compressed conditions. The conductivity data span 7 x 10/sup -4/ to 7 x 10/sup 1/ ..cap omega../sup -1/cm/sup -1/ over a dynamic pressure range 18.1 to 61.5 GPa and are discussed in terms of amorphous semiconduction models which include such transport phenomena as hopping, percolation, pseudogaps, and metallization. Excellent agreement is found between the equation-of-state measurements, which span a dynamic pressure range 12.3 to 53.8 GPa, and Ree's calculated values which assume a 2-phase mixture consisting of molecular hydrogen and carbon in a dense diamond-like phase. There is a 2-1/2 fold increase in the thermal pressure contribution over a less dense, stoichiometrically equivalent liquid. 90 refs., 48 figs., 8 tabs.
Date: October 8, 1986
Creator: Hamilton, D. C.
Object Type: Report
System: The UNT Digital Library
Intense microwave pulse propagation through gas breakdown plasmas in a waveguide (open access)

Intense microwave pulse propagation through gas breakdown plasmas in a waveguide

High-power microwave pulse-compression techniques are used to generate 2.856 GHz pulses which are propagated in a TE/sub 10/ mode through a gas filled section of waveguide, where the pulses interact with self-generated gas-breakdown plasmas. Pulse envelopes transmitted through the plasmas, with duration varying from 2 ns to greater than 1 ..mu..s, and peak powers of a few kW to nearly 100 MW, are measured as a function of incident pulse and gas pressure for air, nitrogen, and helium. In addition, the spatial and temporal development of the optical radiation emitted by the breakdown plasmas are measured. For transmitted pulse durations greater than or equal to 100 ns, good agreement is found with both theory and existing measurements. For transmitted pulse duration as short as 2 ns (less than 10 rf cycles), a two-dimensional model is used in which the electrons in the plasma are treated as a fluid whose interactions with the microwave pulse are governed by a self-consistent set of fluid equations and Maxwell's equations for the electromagnetic field. The predictions of this model for air are compared with the experimental results over a pressure range of 0.8 torr to 300 torr. Good agreement is obtained above about 1 …
Date: October 8, 1986
Creator: Byrne, D. P.
Object Type: Report
System: The UNT Digital Library
Comparison of Wall Thicknesses of Shells and Heads Constructed of Stainless Steel and Aluminum (open access)

Comparison of Wall Thicknesses of Shells and Heads Constructed of Stainless Steel and Aluminum

None
Date: January 8, 1986
Creator: Krempetz, K.
Object Type: Report
System: The UNT Digital Library
Analysis of the human electroencephalogram with methods from nonlinear dynamics (open access)

Analysis of the human electroencephalogram with methods from nonlinear dynamics

We apply several different methods from nonlinear dynamical systems to the analysis of the degree of temporal disorder in data from human EEG. Among these are methods of geometrical reconstruction, dimensional complexity, mutual information content, and two different approaches for estimating Lyapunov characteristic exponents. We show how the naive interpretation of numerical results can lead to a considerable underestimation of the dimensional complexity. This is true even when the errors from least squares fits are small. We present more realistic error estimates and show that they seem to contain additional, important information. By applying independent methods of analysis to the same data sets for a given lead, we find that the degree of temporal disorder is minimal in a ''resting awake'' state and increases in sleep as well as in fluroxene induced general anesthesia. At the same time the statistical errors appear to decrease, which can be interpretated as a transition to a more uniform dynamical state. 29 refs., 10 figs.
Date: September 8, 1986
Creator: Mayer-Kress, G. & Holzfuss, J.
Object Type: Article
System: The UNT Digital Library
Turbulent energy generated by accelerations and shocks (open access)

Turbulent energy generated by accelerations and shocks

The turbulent energy generated at the interface between two fluids undergoing a constant acceleration or a shock is calculated. Assuming linear density profiles in the mixed region we find E/sub turbulent//E/sub directed/ = 2.3A/sup 2/% (constant acceleration) and 9.3A/sup 2/% (shock), where A is the Atwood number. Diffusion models predict somewhat less turbulent energy and a density profile with a tail extending into the lower density fluid. Eddy sizes are approximately 27% (constant acceleration) and 17% (shock) of the mixing depth into the heavier fluid. 6 refs., 3 figs.
Date: October 8, 1986
Creator: Mikaelian, Karnig O.
Object Type: Article
System: The UNT Digital Library
Workshop on short-term health effects of reactor accidents: Chernobyl (open access)

Workshop on short-term health effects of reactor accidents: Chernobyl

The high-dose early-effects research that has been continued has been done in the context of infrequent accidents with large radiation sources and the use of bone marrow transfusions for treating malignancies, especially leukemia. It thus seemed appropriate to bring together those who have done research on and have had experience with massive whole-body radiation. The objectives were to review what is known about the acute effects of whole-body irradiation, to review the current knowledge of therapy, and particularly of the diagnostic and immunologic problems encountered in bone marrow therapy, and to compare this knowledge with observations made to date on the Chernobyl accident radiation casualties. Dr. Robert Gale, who had helped to care for these casualties, was present at the Workshop. It was hoped that such a review would help those making continuing clinical and pathological observations on the Chernobyl casualties, and that these observations would provide a basis for recommendations for additional research that might result in improved ability to manage successfully this type of severe injury.
Date: August 8, 1986
Creator: unknown
Object Type: Article
System: The UNT Digital Library
Bottom Quark Production At The SSC (Superconducting Super Collider) (open access)

Bottom Quark Production At The SSC (Superconducting Super Collider)

We present predictions for the rapidity and transverse momentum distributions for inclusive production of bottom quarks at SSC energies, pp ..-->.. bX. Our computations are based on the simplest, lowest-order QCD mechanisms. To estimate uncertainties, we use three different choices for structure functions, G(x,Q), as well as different choices for the evolution scale Q.
Date: December 8, 1986
Creator: Berger, Edmond L.; Collins, John C. & Soper, Davison E.
Object Type: Article
System: The UNT Digital Library