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open access

Diamond Secondary Emitter

Description: We present the design and experimental progress on the diamond secondary emitter as an electron source for high average power injectors. The design criteria for average currents up to 1 A and charge up to 20 nC are established. Secondary Electron Yield (SEY) exceeding 200 in transmission mode and 50 in emission mode have been measured. Preliminary results on the design and fabrication of the self contained capsule with primary electron source and secondary electron emitter will also be presente… more
Date: October 9, 2005
Creator: Ben-Zvi, Ilan; Rao, T.; Burrill, A.; Chang, X.; Grimes, J.; Rank, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Inhibition of Chloride Induced Crevice Corrosion in Alloy 22 by Fluoride Ions

Description: Alloy 22 (N06022) is highly resistant to localized corrosion. Alloy 22 may be susceptible to crevice corrosion in pure chloride (Cl{sup -}) solutions under aggressive environmental conditions. The effect of the fluoride (F{sup -}) over the crevice corrosion induced by chloride ions is still not well established. The objective of the present work was to explore the crevice corrosion resistance of this alloy to different mixtures of fluorides and chlorides. Cyclic potentiodynamic polarization (CP… more
Date: October 9, 2005
Creator: Carranza, R M; Rodr?guez, M A & Rebak, R B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Superconducting Photocathodes.

Description: We present the results of our investigation of lead and niobium as suitable photocathode materials for superconducting RF injectors. Quantum efficiencies (QE) have been measured for a range of incident photon energies and a variety of cathode preparation methods, including various lead plating techniques on a niobium substrate. The effects of operating at ambient and cryogenic temperatures and different vacuum levels on the cathode QE have also been studied.
Date: October 9, 2005
Creator: Smedley, J.; Rao, T.; Warren, J.; Sekutowicz, Langner, J.; Strzyzewski, P.; Leffers, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Influence of Black Annealing Oxide Scale on the Anodic Behavior of Alloy 22

Description: The resistance of Alloy 22 (N06022) to localized corrosion, mainly crevice corrosion, has been extensively investigated in the last few years. The effect of influencing variables such as temperature, applied potential, chloride concentration and nitrate inhibitor concentration have been addressed previously. At this time, it was important to address the effect an oxide film or scale that forms during the high temperature annealing process or solution heat treatment (SHT) and its subsequent wate… more
Date: October 9, 2005
Creator: Rebak, R. B.; Etien, R. A.; Gordon, S. R. & Ilevbare, G. O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Industrial Experience on the Caustic Cracking of Stainless Steels and Nickel Alloys - A Review

Description: Caustic environments are present in several industries, from nuclear power generation to the fabrication of alkalis and alumina. The most common material of construction is carbon steel but its application is limited to a maximum temperature of approximately 80 C. The use of Nickel (Ni) alloys is recommended at higher temperatures. Commercially pure Ni is the most resistant material for caustic applications both from the general corrosion and the stress corrosion cracking (SCC) perspectives. Ni… more
Date: October 9, 2005
Creator: Rebak, R B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

[Katy Prokof faces UALR opponents on the court]

Description: Photograph of Mean Green volleyball player Katy Prokof (6) facing University of Arkansas at Little Rock opponents Amila Barakovic (1), Sarah Breedlove (14), and Larisa Durmisevic (12) during a match in the Snake Pit. Prokof can be seen in the center of the photograph with a wide stance, looking at the UALR players across from her. Durmisevic is pointing to the right with her right hand.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[Players on the court during UALR match]

Description: Photograph of members of the UNT and University of Arkansas at Little Rock volleyball teams on the court during a match in the Snake Pit. UNT players Ashley Bass (3), Heidi Johnson (9), Erica Wendell (10), Jessica Hulsebosch (8), Tara Hooser (2), and Katy Prokof (6) are facing the camera from behind a net, looking up at a ball that is out of frame. UALR opponents Ivanka Davidova (3), Iva Adzic (7), and Megan Naborowski (5) can be seen on the opposite side of the net.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[UNT coaches on the sidelines during UALR match, 1]

Description: Photograph of Mean Green volleyball coaches standing on the sidelines during a match against the University of Arkansas at Little Rock. One woman (3rd from right) can be seen standing at the refreshments table with her back to the camera, holding a plastic cup as another woman (2nd from right) faces the court with her arms crossed. Head coach Cassie Headrick is standing on the right side of the photograph in front of a row of folding chairs, partially blocked from view by the pole of a net in t… more
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[Ana Buccini and Sarah Breedlove attempt to block spike by UNT player]

Description: Photograph of Ana Carolina Buccini (4) and Sarah Breedlove (14), members of the University of Arkansas at Little Rock volleyball team, attempting to block a spike by a UNT opponent during a match in the Snake Pit. Buccini and Breedlove can be seen with their backs to the camera, extending their arms straight above themselves as they jump toward a volleyball to the right. The UNT player is jumping from the opposite side of the net as Katy Prokof (6) and Heidi Johnson (9) watch from the left.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[UNT volleyball team huddles during UALR match]

Description: Photograph of members of the Mean Green volleyball team huddling during a match against the University of Arkansas at Little Rock. Members of the team are standing in a circle on the court with their arms around each other, wearing North Texas jerseys. Erica Wendell (10) and Catherine Coffey (7) can be identified among the group.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[Tara Hooser signals during UALR match]

Description: Photograph of Tara Hooser (2) on the court during a match against the University of Arkansas at Little Rock. Hooser can be seen standing in the central-left portion of the photograph from behind a net, raising three fingers on her left hand in an "OK" gesture. Two UALR players are standing on the opposite side of the net as a second UNT teammate runs toward Hooser from the background.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[UNT volleyball players signal during UALR match]

Description: Photograph of members of the Mean Green volleyball team on the court during a match against the University of Arkansas at Little Rock. Tara Hooser (2), Jessica Hulsebosch (8), Erica Wendell (10), and another member of the team can be seen standing behind a net as Heidi Johnson (9) prepares to serve a volleyball in the background. Hooser and Wendell are each raising three fingers in an "OK" gesture.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[Cassie Headrick speaks to UNT volleyball players during UALR match]

Description: Photograph of Cassie Headrick, head coach for the Mean Green volleyball team, speaking to players during a match against the University of Arkansas at Little Rock. Headrick can be seen crouched down on the right side of the photograph with her back to the camera, facing a row of UNT teammates sitting across from her. Several other coaches are standing around the group.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[Erica Wendell, Katie Ruiz and others huddle on the sidelines]

Description: Photograph of members of the Mean Green volleyball team huddling on the sidelines during a match against the University of Arkansas at Little Rock. Five individuals are standing side by side with their backs to the camera, facing something out of frame. Erica Wendell (10) and Katie Ruiz (14) can be identified among the group.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections

[UNT volleyball players face UALR opponents on the court]

Description: Photograph of three members of the Mean Green volleyball team on the court during a match against the University of Arkansas at Little Rock. Brooke Engel (5), Catherine Coffey (7), and another teammate (left) are standing with their backs to the camera, facing their opponents across the net. Each of the UNT players is resting one hand on her hip.
Date: October 9, 2005
Creator: Chaney, Ken
Item Type: Refine your search to only Photograph
Location: 33.209896 -97.153476
Partner: UNT Libraries Special Collections
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