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open access

Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads

Description: This research project involves the design, synthesis and study of molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. Specifically, the molecules are designed to mimic the following aspects of natural photosynthetic multistep electron transfer: electron donation from a tetrapyrrole excited singlet state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with different … more
Date: April 12, 1989
Partner: UNT Libraries Government Documents Department
open access

Technical evaluation report of the Fort St. Vrain final draft upgraded technical specifications

Description: This report is a technical evaluation of the final draft of the Fort St. Vrain (FSV) Upgraded Technical Specifications (UT/S) as issued by Public Service of Colorado (PSC) on May 27, 1988 with subsequent supplemental updates issued on June 15, 1988 and August 5, 1988. It has been compared for consistency, and safety conservatism with the Fort St. Vrain (FSV) Updated Final Safety Analysis Report (FSAR), the FSV Safety Evaluation Report (SER), the Facility Operating License, DPR-34, and all amend… more
Date: July 12, 1989
Creator: Kimura, C.Y.
Partner: UNT Libraries Government Documents Department
open access

Nondestructive x-ray microanalysis bidirectional scanning and data acquisition system

Description: A system for making fast scans of specimens and acquiring data was developed at the oak Ridge Y-12 Plant. An LSI 11/23 computer using the RT11 operating system controls the scan and data acquisition. Scan software was written which would program a Unidex III stepping motor controller to make the scan motions while the position was monitored and the data acquired through the computer`s timer/counter boards from the multichannel analyzer`s four region of interest (ROI) outputs. Small areas of a p… more
Date: September 12, 1989
Creator: Lawson, R. L.
Partner: UNT Libraries Government Documents Department
open access

Linear beam-beam tune shift calculations for the Tevatron Collider

Description: A realistic estimate of the linear beam-beam tune shift is necessary for the selection of an optimum working point in the tune diagram. Estimates of the beam-beam tune shift using the ''Round Beam Approximation'' (RBA) have over estimated the tune shift for the Tevatron. For a hadron machine with unequal lattice functions and beam sizes, an explicit calculation using the beam size at the crossings is required. Calculations for various Tevatron lattices used in Collider operation are presented. … more
Date: January 12, 1989
Creator: Johnson, D.
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads. Technical progress report, 1989

Description: This research project involves the design, synthesis and study of molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. Specifically, the molecules are designed to mimic the following aspects of natural photosynthetic multistep electron transfer: electron donation from a tetrapyrrole excited singlet state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with different … more
Date: April 12, 1989
Partner: UNT Libraries Government Documents Department
open access

Negative transverse impedance

Description: Recently, measurements in the SPS show that the coherent tune shift in the horizontal direction has positive values whereas that in the vertical direction has negative ones. Thus the existence of negative transverse impedance gets confirmed in a real machine. This stimulates us to start a new round of systematic studies on this interesting phenomenon. The results obtained from our computer simulations are presented in this note. Our simulations demonstrate that the negative transverse impedance… more
Date: June 12, 1989
Creator: Chou, W.
Partner: UNT Libraries Government Documents Department
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