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The Physics of Gaseous Exposures on Active Field Emission Microcathode Arrays (open access)

The Physics of Gaseous Exposures on Active Field Emission Microcathode Arrays

The interaction of active molybdenum field emission microcathode arrays with oxygen, water, carbon dioxide, methane, hydrogen and helium gases was studied. Experiments were setup to measure the emission characteristics as a function of gas exposures. The resulting changes in the surface work function of the tips were determined from the Fowler-Nordheim plots. The kinetics of the FEA-gas interaction were studied by observing the ion species originating from the array during and after gas exposures with a high resolution quadrupole mass spectrometer. With the work function data and the mass spectrometry information, the mechanisms responsible for emission degradation and subsequent device recovery after exposures have been determined. The data obtained was used in estimating the device lifetimes under various vacuum environments. Also it was found that the gas exposure effects are similar in dc and pulsed modes of operation of the arrays, thus permitting the use of dc mode testing as an effective acceleration method in establishing the device lifetimes under various vacuum conditions. The vacuum conditions required for the long term emission current stability and reliability of vacuum microelectronic devices employing FEAs are established. Exposure of Mo field emitter arrays to oxygen bearing species like oxygen, water and carbon dioxide …
Date: September 1996
Creator: Chalamala, Babu Reddy
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Report of the Twelfth Session of the Intergovernmental Panel on Climate Change (IPCC) (open access)

Report of the Twelfth Session of the Intergovernmental Panel on Climate Change (IPCC)

The main actions of the Panel includes acceptence of revised 1996 IPCC guidelines for National Greenhouse Gas Inventories, the election of the Chairman-elect, and approval of the program and budget for 1997.
Date: September 1996
Creator: Intergovernmental Panel on Climate Change (IPCC)
Object Type: Text
System: The UNT Digital Library
Southwest Retort, Volume 50, Number 1, September 1996 (open access)

Southwest Retort, Volume 50, Number 1, September 1996

This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date: September 1996
Creator: American Chemical Society. Dallas/Fort Worth Section.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Duval County Picture (San Diego, Tex.), Vol. 11, No. 36, Ed. 1 Wednesday, September 4, 1996 (open access)

Duval County Picture (San Diego, Tex.), Vol. 11, No. 36, Ed. 1 Wednesday, September 4, 1996

Weekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.
Date: September 4, 1996
Creator: Cardenas, Alfredo E.
Object Type: Newspaper
System: The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 38, No. 17, Ed. 1 Wednesday, September 4, 1996 (open access)

The Penny Record (Bridge City, Tex.), Vol. 38, No. 17, Ed. 1 Wednesday, September 4, 1996

Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date: September 4, 1996
Creator: Turkel, Arlene
Object Type: Newspaper
System: The Portal to Texas History
Texas Jewish Post (Fort Worth, Tex.), Vol. 50, No. 36, Ed. 1 Thursday, September 5, 1996 (open access)

Texas Jewish Post (Fort Worth, Tex.), Vol. 50, No. 36, Ed. 1 Thursday, September 5, 1996

Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date: September 5, 1996
Creator: Wisch, J. A. & Wisch, Rene
Object Type: Newspaper
System: The Portal to Texas History
Duval County Picture (San Diego, Tex.), Vol. 11, No. 37, Ed. 1 Wednesday, September 11, 1996 (open access)

Duval County Picture (San Diego, Tex.), Vol. 11, No. 37, Ed. 1 Wednesday, September 11, 1996

Weekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.
Date: September 11, 1996
Creator: Cardenas, Alfredo E.
Object Type: Newspaper
System: The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 38, No. 18, Ed. 1 Wednesday, September 11, 1996 (open access)

The Penny Record (Bridge City, Tex.), Vol. 38, No. 18, Ed. 1 Wednesday, September 11, 1996

Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date: September 11, 1996
Creator: Turkel, Arlene
Object Type: Newspaper
System: The Portal to Texas History
Texas Jewish Post (Fort Worth, Tex.), Vol. 50, No. 37, Ed. 1 Thursday, September 12, 1996 (open access)

Texas Jewish Post (Fort Worth, Tex.), Vol. 50, No. 37, Ed. 1 Thursday, September 12, 1996

Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date: September 12, 1996
Creator: Wisch, J. A. & Wisch, Rene
Object Type: Newspaper
System: The Portal to Texas History
South Texas Catholic (Corpus Christi, Tex.), Vol. 31, No. 17, Ed. 1 Friday, September 13, 1996 (open access)

South Texas Catholic (Corpus Christi, Tex.), Vol. 31, No. 17, Ed. 1 Friday, September 13, 1996

Bi-weekly newspaper from Corpus Christi, Texas published by the Diocese of Corpus Christi that includes news of interest to Diocese members along with advertising.
Date: September 13, 1996
Creator: Espitia, Paula
Object Type: Newspaper
System: The Portal to Texas History
Duval County Picture (San Diego, Tex.), Vol. 11, No. 38, Ed. 1 Wednesday, September 18, 1996 (open access)

Duval County Picture (San Diego, Tex.), Vol. 11, No. 38, Ed. 1 Wednesday, September 18, 1996

Weekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.
Date: September 18, 1996
Creator: Cardenas, Alfredo E.
Object Type: Newspaper
System: The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 38, No. 19, Ed. 1 Wednesday, September 18, 1996 (open access)

The Penny Record (Bridge City, Tex.), Vol. 38, No. 19, Ed. 1 Wednesday, September 18, 1996

Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date: September 18, 1996
Creator: Turkel, Arlene
Object Type: Newspaper
System: The Portal to Texas History
Texas Jewish Post (Fort Worth, Tex.), Vol. 50, No. 38, Ed. 1 Thursday, September 19, 1996 (open access)

Texas Jewish Post (Fort Worth, Tex.), Vol. 50, No. 38, Ed. 1 Thursday, September 19, 1996

Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date: September 19, 1996
Creator: Wisch, J. A. & Wisch, Rene
Object Type: Newspaper
System: The Portal to Texas History
Duval County Picture (San Diego, Tex.), Vol. 11, No. 39, Ed. 1 Wednesday, September 25, 1996 (open access)

Duval County Picture (San Diego, Tex.), Vol. 11, No. 39, Ed. 1 Wednesday, September 25, 1996

Weekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.
Date: September 25, 1996
Creator: Cardenas, Alfredo E.
Object Type: Newspaper
System: The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 38, No. 20, Ed. 1 Wednesday, September 25, 1996 (open access)

The Penny Record (Bridge City, Tex.), Vol. 38, No. 20, Ed. 1 Wednesday, September 25, 1996

Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date: September 25, 1996
Creator: Turkel, Arlene
Object Type: Newspaper
System: The Portal to Texas History
Texas Jewish Post (Fort Worth, Tex.), Vol. 50, No. 39, Ed. 1 Thursday, September 26, 1996 (open access)

Texas Jewish Post (Fort Worth, Tex.), Vol. 50, No. 39, Ed. 1 Thursday, September 26, 1996

Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date: September 26, 1996
Creator: Wisch, J. A. & Wisch, Rene
Object Type: Newspaper
System: The Portal to Texas History
South Texas Catholic (Corpus Christi, Tex.), Vol. 31, No. 18, Ed. 1 Friday, September 27, 1996 (open access)

South Texas Catholic (Corpus Christi, Tex.), Vol. 31, No. 18, Ed. 1 Friday, September 27, 1996

Bi-weekly newspaper from Corpus Christi, Texas published by the Diocese of Corpus Christi that includes news of interest to Diocese members along with advertising.
Date: September 27, 1996
Creator: Espitia, Paula
Object Type: Newspaper
System: The Portal to Texas History