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Neutron Energy Spectrum of a Po-Be (alpha,n) Source
The newtron energy spectrum of a Po-Be (alpha, n) source was measured as part of an intercomparison of newtron energy spectral measurements sponsored by Oak Ridge National Laboratory. Intensity maxima for neutron energies > 1 MeV were seen at or near 1.4, 2.1, 3.1, 5.0, 6.7, 7.7 and 9.7 MeV.
Date:
January 17, 1972
Creator:
Anderson, M. E.
Object Type:
Report
System:
The UNT Digital Library
Pacific Northwest Laboratory monthly report on isotopes development programs for June 1972
None
Date:
July 17, 1972
Creator:
Jarrett, J. H.
Object Type:
Report
System:
The UNT Digital Library
Approximate method for calculating the response of emplacement structures subjected to ground shock from underground nuclear detonations
None
Date:
November 17, 1972
Creator:
Hartzman, M.
Object Type:
Article
System:
The UNT Digital Library
PHOTORESIST CHARACTERIZATION METHOD FOR HYBRID MICROCIRCUrTS
Untrimmed hybrid microcircuit networks require dimensional dontrol to maintain critical electrical parameters within the required tolert.- ances. Dimensional integrity can be maintained by parameter manipulation and control. Five processing parameters affect the dimensional stability of the pattern: the prebake time-temperature product, exposure energy, developing time and concentration, resist thickness uniformity, and etchant undercutting. By adjusting the relative dominance of those parameters and by. optimizing the value of each, the total dimensional deviation can be made relatively insensitive to normal process variations. Thus, process characterization and control methods which will maintain one-percent dimensional control on lines as narrow as 5.0 mils - (127 Km) can be established.
Date:
July 17, 1972
Creator:
Schantz, L. E.
Object Type:
Report
System:
The UNT Digital Library
Compression Low-Cycle Fatigue of Type 347 Stainless Steel and Hastelloy X at Elevated Temperatures
This report addresses the compression low-cycle fatigue of Type 347 stainless steel and Hastelloy X at elevated.
Date:
April 17, 1972
Creator:
Porfilio, T.
Object Type:
Report
System:
The UNT Digital Library
Temperature distribution in the SPF reactor shield plug during operation
None
Date:
January 17, 1972
Creator:
Montgomery, L.D.
Object Type:
Report
System:
The UNT Digital Library
Design criteria: data acquisition system for waste tank liquid level gauges and SX Tank Farm thermocouples
This design criteria revision (revision 2) will cancel revision 1 and will provide complete functional supervision of the liquid level gauges. A new.counter and an electronic supervisory circuit will be installed in each waste tank liquid level gauge. The electronic supervisory circuit will monitor (via the new counter and a signal from the gauge electronics) cycling of the gauge on a one minute time cycle. This supervisory circuit will fulfill the intent of revision 1 (monitor AC power to the gauge) and, in addition, will supervise all other aspects of the gauge including: the electronics, the drive motor, all sprockets and chain linkages, and the counter. If a gauge failure should occur, this circuit will remove the +12 volts excitation from the data acquisition system inferface board; and the computer will be programmed to recognize this condition as a gauge failure. (auth)
Date:
February 17, 1972
Creator:
Martin, G. E. & Oliver, R. G.
Object Type:
Report
System:
The UNT Digital Library