Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Piles of letters sent to Oklahoma from all over the world covered postmaster secretary Donna Harris' desk in the weeks after the April 19 Murrah Building bombing."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Piles of letters sent to Oklahoma from all over the world covered postmaster secretary Donna Harris' desk in the weeks after the April 19 Murrah Building bombing."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "From left, "Arts Festival and Remington Park" co-chairman John Covington and Remington Parks's David Vance hold a painting, "Lake Hefner Skyline," by artist Greg Burns with co-chairman Sally Whitten."

An article in the Fort Worth Star-Telegram about the upcoming collections and events at the Amon Carter Museum in Fort Worth. It is titled Little Journeys and has information about tours and group visits.

Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10 P.M.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Acrane lowers rebar down to beddrock to form pier that will provide stability for the foundation of the Cat Forest exhibit building. At left, is the eye-catching official Cat Forest logo."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "White shirt Allen Hinter, Red shirt Mike Ross, crane is lowering rebar as the workers guide it."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Zoo Cat Fostest Lion Over look Exhibit"

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Photograph used for a story in the Daily Oklahoman newspaper.

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma's dynamic young football coach, Jim Mackenzie, died unexpectedly of a heart attack suffered in his home after he returned from a recruiting trip to Amarillo."

A procedure and the equipment necessary for single-point diamond flycutting (loosely referred to as diamond turning) potassium di-hydrogen phosphate (KDP) crystals are described. It is based on current KDP diamond turning activities at the Lawrence Livermore National Laboratory (LLNL), drawing upon knowledge from the Nova crystal finishing development during the 1980`s and incorporating refinements from our efforts during 1995. In addition to describing a step-by-step process for diamond turning KDP, specific discussions are included on the necessary diamond tool geometry and edge sharpness, cutting fluid, and crystal preparation, handling, cleaning, and inspection. The authors presuppose that the reader is already familiar with diamond turning practices.

Optical damage that results in large scale fracture has been observed in the large, high-fluence, fused-silica, spatial filter lenses on the Nova and Beamlet lasers. In nearly all cases damage occurs on the vacuum side of the lenses and because the vacuum side of the lens is under tensile stress this damage can lead to catastrophic crack growth if the flaw (damage) size exceeds the critical flaw size for SiO{sub 2}. The damaged 52 cm Nova lenses fracture into two and sometimes three large pieces. Although under full vacuum load at the time they fracture, the Nova lenses do not implode. Rather the authors have observed that the pieces lock together and air slowly leaks into the vacuum spatial filter housing through the lens cracks. The Beamlet lenses have a larger aspect ratio and peak tensile stress than Nova. The peak tensile stress at the center of the output surface of the Beamlet lens is 1,490 psi versus 810 psi for Nova. During a recent Beamlet high energy shot, a damage spot on the lens grew to the critical flaw size and the lens imploded. Post shot data indicate the lens probably fractured into 5 to 7 pieces, however, unlike …

Reflections from lens surfaces create parasitic beams that can damage optics in high-powered laser systems. These parasitic beams are low in energy initially, because of the low reflectivity of antireflection (AR) coated lens surfaces and because they are clipped by spatial filter pinholes, but subsequent amplification can raise them to damage fluence levels. Also, some of the pencil beams in multipass laser systems become pre-pulses at the output by by-pass one of more of the passes, arriving at the output ahead of the main pulse in time. They are insidious because pencil beams that are not initially a problem can become so due to a slow degradation of the AR coatings. Both the Nova and Beamlet laser systems at LLNL have had optics damaged by pencil beams. The best solution for pencil beams is to tip the lenses far enough to eliminate them altogether. This will be the approach taken for the National Ignition Facility (NIF).

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Hollis Roberts, Choctaw Indian Nation Chief"

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

The proposed National Ignition Facility is a 192 beam Nd:glass laser system capable of driving targets to fusion ignition by the year 2005. A key factor in the flexibility and performance of the laser is a front-end system which provides a precisely formatted beam to each beamline. Each of the injected beams has individually controlled energy, temporal pulseshape, and spatial shape to accommodate beamline-to-beamline variations in gain and saturation. This flexibility also gives target designers the options for precisely controlling the drive to different areas of the target. The design of the Front-End laser is described, and initial results are discussed.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. Story aired at 6pm.