Optical components for the Nova laser (open access)

Optical components for the Nova laser

In addition to its other characteristics, the Nova Laser Fusion facility may well be the largest precision optical project ever undertaken. Moreover, during the course of construction, concurrent research and development has been successfully conducted, and has resulted in significant advances in various technical areas, including manufacturing efficiency. Although assembly of the first two beams of Nova is just commencing, the optical production, including construction of the special facilities required for many of the components, has been underway for over three years, and many phases of the optical manufacturing program for the first 10 beams will be completed within the next two years. On the other hand, new requirements for second and third harmonic generation have created the need to initiate new research and development. This work has been accomplished through the enormous cooperation DOE/LLNL has received from commercial industry on this project. In many cases, industry, where much of the optical component research and development and virtually all of the manufacturing is being done, has made substantial investment of its own funds in facilities, equipment, and research and development, in addition to those supplied by DOE/LLNL.
Date: May 17, 1982
Creator: Wallerstein, E.P.; Baker, P.C. & Brown, N.J.
Object Type: Article
System: The UNT Digital Library
Pi-decay muons from the SLC positron source (open access)

Pi-decay muons from the SLC positron source

This note extends the calculations presented in CN-295 (''additional muon calculations for the SLC positron source'') by taking into account the photoproduction of pions in the SLC positron target with subsequent decay into muons. By taking into account the probability of pion interaction in the target/wave guide/solenoid complex versus decay in drift reqions, we have concluded that this source of muons will not significanly contribute to the overall levels presented in the previous note.
Date: May 17, 1985
Creator: Nelson, W. R. & Shore, R. A.
Object Type: Report
System: The UNT Digital Library
Experiments to study the feasibility of making an x-ray laser at the Novette laser facility (open access)

Experiments to study the feasibility of making an x-ray laser at the Novette laser facility

We will discuss a set of experiments which are designed to study approaches to and search for the existence of amplified spontaneous emission at photon energies of 42.3, 53.6, 119.0, and 153.0 eV. The schemes utilize pumping from the Novette laser operated with cylindrical optics at 5 TW/beam and 100 psec.
Date: May 17, 1983
Creator: Matthews, D.L.; Hagelstein, P. & Kauffman, R.
Object Type: Article
System: The UNT Digital Library
Compact Torus Compression of Microwaves (open access)

Compact Torus Compression of Microwaves

The possibility that a compact torus (CT) might be accelerated to large velocities has been suggested by Hartman and Hammer. If this is feasible one application of these moving CTs might be to compress microwaves. The proposed mechanism is that a coaxial vacuum region in front of a CT is prefilled with a number of normal electromagnetic modes on which the CT impinges. A crucial assumption of this proposal is that the CT excludes the microwaves and therefore compresses them. Should the microwaves penetrate the CT, compression efficiency is diminished and significant CT heating results. MFE applications in the same parameters regime have found electromagnetic radiation capable of penetrating, heating, and driving currents. We report here a cursory investigation of rf penetration using a 1-D version of a direct implicit PIC code.
Date: May 17, 1985
Creator: Hewett, D. W. & Langdon, A. B.
Object Type: Article
System: The UNT Digital Library
Time dependent Hartree-Fock theory: special applications (open access)

Time dependent Hartree-Fock theory: special applications

Some TDHF applications are addressed that are somewhat subtler than just crashing nuclei together and looking at large chunks of nuclear material. I will also attempt to address some of the technical problems of doing TDHF and also point out some areas where work remains to be done. Topics include promptly emitted particles, large amplitude RPA, and exciting giant resonances in heavy ion collisions. 19 references. (WHK)
Date: May 17, 1984
Creator: Weiss, M.S.
Object Type: Article
System: The UNT Digital Library
Basic and heavy ion scattering in time dependent Hartree-Fock Theory (open access)

Basic and heavy ion scattering in time dependent Hartree-Fock Theory

Time Dependent Hartree-Fock theory, TDHF, is the most sophisticated, microscopic approach to nuclear dynamics yet practiced. Although it is far from a description of nature it does allow us to examine multiply interactive many-body systems semi quantum mechanically and to visualize otherwise covert processes. Some of the properties of the TDHF equations are stated leaving the interested reader to one of several excellent review articles for the derivations. Some of the applications to the collision of heavy ions are briefly described. (WHK)
Date: May 17, 1984
Creator: Weiss, M.S.
Object Type: Article
System: The UNT Digital Library
Acid hydrolysis of tetraphenylborate at elevated temperature and pressure (open access)

Acid hydrolysis of tetraphenylborate at elevated temperature and pressure

Sodium tetraphenylborate is used to coprecipitate cesium with potassium in the precipitation process that has been developed to decontaminate waste salt solutions. This report summarizes the results that have been obtained.
Date: May 17, 1982
Creator: Fowler, J. R.
Object Type: Report
System: The UNT Digital Library
Mean life of the 2p/sup 4/(/sup 1/S)3s /sup 2/S state in fluorine (open access)

Mean life of the 2p/sup 4/(/sup 1/S)3s /sup 2/S state in fluorine

In this work, we calculate the radiationless as well as the radiative decay rates for the 2p/sup 4/(/sup 1/S)3s /sup 2/S state. For comparison purposes, we also make similar calculations for the 2p/sup 4/(/sup 1/D)4s /sup 2/D state. Our calculation is based on the multi-configuration Dirac-Fock (MCDF) method. As spin-orbit interaction is built in, this method is capable of studying LS forbidden Auger transitions. Details of the Auger transition calculations have been given before. 9 refs.
Date: May 17, 1985
Creator: Cheng, K. T. & Chen, M. H.
Object Type: Article
System: The UNT Digital Library