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Absolute experimental cross sections for the electron impact single, double, triple, and quadruple ionization of Cs/sup +/ ions. Final technical report (open access)

Absolute experimental cross sections for the electron impact single, double, triple, and quadruple ionization of Cs/sup +/ ions. Final technical report

The absolute cross sections for the single, double, triple and quadruple ionization of Cs/sup +/ ions by electron impact have been measured from below their respective thresholds to approximately 5000 eV. This determination has been accomplshed using a crossed beam facility in which monoenergetic beams of ions and electrons are caused to intersect at right angles in a well-defined collision volume. Multiply charged, product ions born as a result of the electron impact are deflected into their respective detectors by cascaded electrostatic analyzers. The multiply charged beam current component is measured by means of a vibrating reed electrometer operating in the rate-of-charge mode.
Date: February 28, 1981
Creator: Feeney, R. K. & Hertling, D. R.
Object Type: Report
System: The UNT Digital Library
El Campo Leader-News (El Campo, Tex.), Vol. 96, No. 98, Ed. 1 Saturday, February 28, 1981 (open access)

El Campo Leader-News (El Campo, Tex.), Vol. 96, No. 98, Ed. 1 Saturday, February 28, 1981

Semi-weekly newspaper from El Campo, Texas that includes local, state, and national news along with advertising.
Date: February 28, 1981
Creator: Barbee, Chris
Object Type: Newspaper
System: The Portal to Texas History
Cleveland Advocate (Cleveland, Tex.), Vol. 62, No. 18, Ed. 1 Saturday, February 28, 1981 (open access)

Cleveland Advocate (Cleveland, Tex.), Vol. 62, No. 18, Ed. 1 Saturday, February 28, 1981

Semiweekly newspaper from Cleveland, Texas that includes local, state, and national news along with advertising.
Date: February 28, 1981
Creator: Bolin, Roy
Object Type: Newspaper
System: The Portal to Texas History

[close up Karen Olvera]

Portrait of Karen Olvera, a student who received her Masters in Fine Arts from the University of North Texas after completing her thesis entitled "Marcel Duchamp's The Large Glass as 'Negation of Women.'" The photo is a close up of the student's face.
Date: February 28, 1981
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library

[Close up MFA student]

Portrait of Karen Olvera, a student who received her Masters in Fine Arts from the University of North Texas after completing her thesis entitled "Marcel Duchamp's The Large Glass as 'Negation of Women.'" The photo is a close up of the MFA student.
Date: February 28, 1981
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library

[Close up of Karen Olvera]

Portrait of Karen Olvera, a student who received her Masters in Fine Arts from the University of North Texas after completing her thesis entitled "Marcel Duchamp's The Large Glass as 'Negation of Women.'" The photo is a close up of the student's face.
Date: February 28, 1981
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library

[Close up of Olvera]

Portrait of Karen Olvera, a student who received her Masters in Fine Arts from the University of North Texas after completing her thesis entitled "Marcel Duchamp's The Large Glass as 'Negation of Women.'"
Date: February 28, 1981
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library
Fundamentals of interruption in vacuum. Eleventh progress report (open access)

Fundamentals of interruption in vacuum. Eleventh progress report

During the past three months effort has concentrated on formulating a method to predict the enhancement of electrode surface field and power input occasioned by the presence of a projection on the electrode surface, during the ion sheath development period which attends the scavenging a contact gap following current interruption in vacuum. In addition, experimental evidence has been obtained to support the theory, postulated earlier, of a turn-around interval for electrons left in the gap, which preceeds the rise of the transient recovery voltage.
Date: February 28, 1981
Creator: Greenwood, A. N. & Sullivan, J. S.
Object Type: Report
System: The UNT Digital Library
High-resolution positron Q-value measurements and nuclear-structure studies far from the stability line. Progress report (open access)

High-resolution positron Q-value measurements and nuclear-structure studies far from the stability line. Progress report

Extensive data analysis and theoretical analysis has been done to complete the extensive decay scheme investigation of /sup 206/ /sup 208/Fr and the level structures of /sup 206/ /sup 208/Rn. A final version of a journal article is presented in preprint form. Extensive Monte Carlo calculations have been made to correct the end point energies of positron spectra taken with intrinsic Ge detectors for annihilation radiation interferences. These calculations were tested using the decay of /sup 82/Sr which has previously measured positron branches. This technique was applied to the positron spectra collected at the on-line UNISOR isotope separator. The reactions used were /sup 60/Ni(/sup 20/Ne;p2n)/sup 77/Rb and /sup 60/Ni(/sup 20/Ne;pn)/sup 78/Rb. Values for 5, ..gamma..-..beta../sup +/ coincidence positron end point energies are given for the decay of /sup 77/Rb. The implied Q-value is 5.075 +- 0.010 MeV. A complete paper on the calculated corrections is presented. A flow chart of a more complete program which accounts for positrons scattering out of the detector and for bremsstralung radiation is also presented. End-point energies of four ..beta../sup +/ branches in /sup 77/Rb are given as well as a proposed energy level scheme of /sup 75/Kr based on ..gamma..-..gamma.. coincidence data taken at …
Date: February 28, 1981
Creator: Avignone, F. T. III
Object Type: Report
System: The UNT Digital Library

[House in a valley overlooking horses]

Photograph overlooking a house located in a valley near Cundiyo New Mexico. The house sits alone overlooking a creek and a field with two grazing horses with a trailer parked in the top back corner.
Date: February 28, 1981
Creator: Williams, Byrd M. (Byrd Moore), IV, 1951-
Object Type: Photograph
System: The UNT Digital Library

[Houses in a valley in New Mexico]

Photograph of houses in a valley in New Mexico in the under slope of a hilly area.
Date: February 28, 1981
Creator: Williams, Byrd M. (Byrd Moore), IV, 1951-
Object Type: Photograph
System: The UNT Digital Library
Hydrogeochemical and Stream Sediment Reconnaissance Basic Data for Scottsbluff NTMS Quadrangle, Nebraska and Colorado (open access)

Hydrogeochemical and Stream Sediment Reconnaissance Basic Data for Scottsbluff NTMS Quadrangle, Nebraska and Colorado

"Results of a reconnaissance geochemical survey of the Scottsbluff Quadrangle are reported. Field and laboratory data are presented for 567 groundwater and 402 stream sediment samples. statistical distributions and symbol plots for uranium and possible uranium-related variables are enclosed. A generalized geologic map and a producing horizon map for the survey area are provided. Pertinent geologic factors that may be of significance in evaluating the potential for uranium mineralization are briefly discussed."
Date: February 28, 1981
Creator: National Uranium Resource Evaluation Program
Object Type: Report
System: The UNT Digital Library

[Karen Olvera portrait]

Portrait of Karen Olvera, a student who received her Masters in Fine Arts from the University of North Texas after completing her thesis entitled "Marcel Duchamp's The Large Glass as 'Negation of Women.'"
Date: February 28, 1981
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library
[News Clip: Accident] captions transcript

[News Clip: Accident]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: California produce] captions transcript

[News Clip: California produce]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981, 5:30 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Cowtown Marathon action] captions transcript

[News Clip: Cowtown Marathon action]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981, 5:30 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Hector Ortiz interview] captions transcript

[News Clip: Hector Ortiz interview]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Hurst vote] captions transcript

[News Clip: Hurst vote]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Marathon preview] captions transcript

[News Clip: Marathon preview]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981, 5:30 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Runner prep] captions transcript

[News Clip: Runner prep]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981, 5:30 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Shooting] captions transcript

[News Clip: Shooting]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Shooting] captions transcript

[News Clip: Shooting]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Shooting Carole Woods] captions transcript

[News Clip: Shooting Carole Woods]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Texas A&M vs Houston] captions transcript

[News Clip: Texas A&M vs Houston]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1981, 5:30 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library