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Fabrication of an 8:1 ellipsoidal mirror for a synchrotron x-ray microprobe (open access)

Fabrication of an 8:1 ellipsoidal mirror for a synchrotron x-ray microprobe

The fabrication of an 8:1 demagnifying ellipsoidal mirror to be used for an x-ray microprobe at the National Synchrotron Light Source X-26 beam port is described. The design aim was to produce a mirror that could be used over the photon energy range from about 3 to 17 keV. The 300-mm long mirror was required to operate at a grazing angle of 5 mr. The semimajor axis was 4500 mm and the semiminor axis 14.142 mm. Surface roughness of 1 nm or less and slope errors of 1 arc second parallel to the long axis and 200 arc seconds parallel to the short direction were specified. Production of the first electroless nickel-coated aluminum mirror using a diamond-turning technique has been completed. The mirror meets the 1 arc sec surface figure specification except for areas near the ends of the mirror. The reasons for these deviations arise from subtle details of the diamond-turning process which have not been fully incorporated in to the computer program that controls the diamond-turning machines. Further work in computer correction of repeatable errors of the diamond-turning machine can eliminate the waviness at the ends of the mirror. The diamond-turned mirror surface was not fully polished under …
Date: January 11, 1987
Creator: Jones, K. W.; Takacs, P. Z.; Hastings, J. B.; Casstevens, J. M. & Pionke, C. D.
Object Type: Article
System: The UNT Digital Library
Induction linac-driven free-electron lasers: Status and future prospects (open access)

Induction linac-driven free-electron lasers: Status and future prospects

The high repetition rate and low single-pass gain inherent in an rf-driven Free Electron Laser (FEL) dictate that the laser system be configured as an oscillator. This allows the laser's electric field to build up over many passes around a high Q cavity. By way of contrast, the high-current capability of the Induction Linac (IL) system permits high single-pass optical gain, but the relatively low duty factor precludes oscillator operation; the pulses are neither long enough nor often enough to permit a field to accumulate in a cavity. The IL is thus configured as a MOPA (master oscillator/power amplifier) with a conventional laser serving as the MO. This report concentrates on the status of IL-driven FEL research at LLNL and gives a description of several applications for the high-peak-power radiation produced by an induction linac FEL.
Date: January 11, 1987
Creator: Prosnitz, D.
Object Type: Article
System: The UNT Digital Library
[News Clip: AIDS] captions transcript

[News Clip: AIDS]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date: January 11, 1987, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Dallas Homicide] captions transcript

[News Clip: Dallas Homicide]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date: January 11, 1987, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Homicide] captions transcript

[News Clip: Homicide]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date: January 11, 1987, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Hill Trial] captions transcript

[News Clip: Hill Trial]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date: January 11, 1987, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Homicide] captions transcript

[News Clip: Homicide]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5pm.
Date: January 11, 1987, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: AIDS / CDC] captions transcript

[News Clip: AIDS / CDC]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date: January 11, 1987, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[Clipping: AZT's effectiveness puzzling for AIDS patients, researchers] (open access)

[Clipping: AZT's effectiveness puzzling for AIDS patients, researchers]

A newspaper clipping about the drug being used to treat AIDS.
Date: January 11, 1987
Creator: Brady, Jim
Object Type: Clipping
System: The UNT Digital Library
Polk County Enterprise (Livingston, Tex.), Vol. 105, No. 4, Ed. 1 Sunday, January 11, 1987 (open access)

Polk County Enterprise (Livingston, Tex.), Vol. 105, No. 4, Ed. 1 Sunday, January 11, 1987

Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date: January 11, 1987
Creator: White, Barbara
Object Type: Newspaper
System: The Portal to Texas History
Levelland and Hockley County News-Press (Levelland, Tex.), Vol. 8, No. 82, Ed. 1 Sunday, January 11, 1987 (open access)

Levelland and Hockley County News-Press (Levelland, Tex.), Vol. 8, No. 82, Ed. 1 Sunday, January 11, 1987

Semiweekly newspaper from Levelland, Texas that includes local, state, and national news along with advertising.
Date: January 11, 1987
Creator: Smith, Billy
Object Type: Newspaper
System: The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 65, No. 60, Ed. 1 Sunday, January 11, 1987 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 65, No. 60, Ed. 1 Sunday, January 11, 1987

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: January 11, 1987
Creator: Brown, Leon
Object Type: Newspaper
System: The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 73, No. 102, Ed. 1 Sunday, January 11, 1987 (open access)

Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 73, No. 102, Ed. 1 Sunday, January 11, 1987

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date: January 11, 1987
Creator: Lake, Charles S.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Chickasha Daily Express (Chickasha, Okla.), Vol. 95, No. 319, Ed. 1 Sunday, January 11, 1987 (open access)

Chickasha Daily Express (Chickasha, Okla.), Vol. 95, No. 319, Ed. 1 Sunday, January 11, 1987

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: January 11, 1987
Creator: Drew, Charles C.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Allen American (Allen, Tex.), Vol. 17, No. 153, Ed. 1 Sunday, January 11, 1987 (open access)

The Allen American (Allen, Tex.), Vol. 17, No. 153, Ed. 1 Sunday, January 11, 1987

Triweekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date: January 11, 1987
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 65, No. 9, Ed. 1 Sunday, January 11, 1987 (open access)

Altus Times (Altus, Okla.), Vol. 65, No. 9, Ed. 1 Sunday, January 11, 1987

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: January 11, 1987
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Journal Capital (Pawhuska, Okla.), Vol. 77, No. 7, Ed. 1 Sunday, January 11, 1987 (open access)

Journal Capital (Pawhuska, Okla.), Vol. 77, No. 7, Ed. 1 Sunday, January 11, 1987

Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date: January 11, 1987
Creator: Kennett, Janet
Object Type: Newspaper
System: The Gateway to Oklahoma History
[News Clip: Alien advice] captions transcript

[News Clip: Alien advice]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5pm.
Date: January 11, 1987
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Alien advice] captions transcript

[News Clip: Alien advice]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date: January 11, 1987
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library