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Science & Technology Review
4
ARM Facilities Newsletter
3
Fiscal Year 1993
3
Analysis of Devonian Black Shales in Kentucky for Potential Carbon Dioxide Sequestration and Enhanced Natural Gas Production Quarterly Report
2
CO2 Capture by Absorption With Potassium Carbonate Quarterly Report
2
Chief Joseph Kokanee Enhancement Project
2
Enhancement of Equilibrium Shift in Dehydrogenation Reactions Using a Novel Membrane Reactor Semi-Annual Report
2
Fiscal Year 2008
2
A Real-Time Coal Content/Ore Grade (C2OG) Sensor, Technical Report
1
ANL Site Environmental Report
1
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Theory of High Frequency Rectification by Silicon Crystals
The excellent performance of British ''red dot'' crystals is explained as due to the knife edge contact against a polished surface. High frequency rectification depends critically on the capacity of the rectifying boundary layer of the crystal. C. For high conversion efficiency, the product of this capacity and of the ''forward'' (bulk) resistance R{sub b} of the crystal must be small. For a knife edge, this product depends primarily on the breadth of the knife edge and very little upon its length. The contact can therefore have a rather large area which prevents burn-out. For a wavelength of 10 cm. the computations show that the breadth of the knife edge should be less than about 10{sup -3} cm. For a point contact the radius must be less than 1.5 x 10{sup -3} cm. and the resulting small area is conductive to burn-out. The effect of ''tapping'' is probably to reduce the area of contact.
Date:
October 29, 1942
Creator:
Bethe, H. A.
Object Type:
Report
System:
The UNT Digital Library
Wind dilution required to reduce to tolerance levels the activity due to xenon and iodine in HEW dissolver off-gases
The radio-active xenon and iodine evolved during the dissolution of the uranium may present a health hazard within certain areas around the base of the stack through which the dissolver off-gases are discharged. Since the concentration of these elements in the uranium metal is directly proportional to the power of the pile* and is related to decay period of the metal in accordance with their half-lifes, the maximum rate of discharge of these elements from the stack at H.E.W. can be estimated form existing Clinton data. The required wind dilution to reduce the discharging activation to tolerance levels can then be calculated. The time with respect to the start of the metal dissolution at which the maximum rates of discharge will be attained can also be roughly estimated form existing Clinton data. 3 figs., 3 tabs.
Date:
September 29, 1944
Creator:
Dreher, J.L.
Object Type:
Report
System:
The UNT Digital Library
FILM FORMATION IN "W" ANNULUS
None
Date:
January 29, 1945
Creator:
Larson, R E & Szulinski, M J
Object Type:
Report
System:
The UNT Digital Library
Determination of possibility of film removal by increased water flow
None
Date:
March 29, 1945
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
100-F unit purge May 20, 1945
None
Date:
May 29, 1945
Creator:
Dahlen, P. A.
Object Type:
Report
System:
The UNT Digital Library
The Average Q Meter
The average Q meter is an instrument which averages the Q over over short periods of time, thus taking into account non-productive moments due to sparking and other factors, giving a truer measure of production than the present instantaneous meters. Embodied in this report are its methods of operation, reasons for its use, and descriptions of various physical types of the average Q meter.
Date:
September 29, 1945
Creator:
Bevis, M.; Osborne, M. J. & Winton, M. L.
Object Type:
Report
System:
The UNT Digital Library
Monthly, 100 Area technical activities report, Physics, 10-25-45--May 1947
Two events of broad significance occurred in the 100B Area during this report period. These are the discovery of pimpled slugs in high concentration tubes discharged on 10-30-45 and the discovery of leaking VSR thimbles on 11-15-45. Although more extensive reports of these occurrences will be made elsewhere, these events have aspects of significance to physics and basic data will be given in this report for record purposes.
Date:
November 29, 1945
Creator:
Jordan, W. E.; Wende, C. W. J. & Gaxt, P. F.
Object Type:
Report
System:
The UNT Digital Library
Production Test No. 105-51-P Supplement A, Pneumatic test of vertical thimbles. Final report
None
Date:
May 29, 1946
Creator:
Switzer, W. O.
Object Type:
Report
System:
The UNT Digital Library
Final report on Production Test 105-8-P -- Film formation
Tests made prior to beginning operation of the 100 Areas showed that the cooling water had a tendency to deposit a film upon the slug and tubs surfaces. This film would manifest itself as an increase in the pressure drop through the tubes and its most serious affect would be the resultant decrease in the slug to water host transfer coefficient which would increase the slug surface temperature, causing greatly accelerated corrosion rates. It was thus proposed to study film formation an a production test. This report discusses this test.
Date:
August 29, 1946
Creator:
Dahlen, P. A.
Object Type:
Report
System:
The UNT Digital Library
100 Areas technical activities report -- Engineering, July, 1947
This monthly report covers activities for the production reactors. The 100 Area activities include: corrosion and blistering studies of slugs and flanges; study of the process tube leak at 105-D; graphite expansion studies which include galling of process tubes and stresses in biological shields; and irradiation studies.
Date:
August 29, 1947
Creator:
Woods, W. K.
Object Type:
Report
System:
The UNT Digital Library
Report of measurement of radiation through Hanford Shield Production Test No. 105-213-P
The intensities of radiations transmitted though a Hanford Pile Shield have been measured with the results discussed in this report.
Date:
September 29, 1948
Creator:
Whipple, G. H. Jr.
Object Type:
Report
System:
The UNT Digital Library
History of the reactivation of 100-B pile
This report summarizes the preparations made for reactivation of the 100-B pile and the operational activities associated with the reactivation and subsequent operation up to the time of reaching desired power level. The period covered is from approximately June 1, 1948 until July 16, 1948.
Date:
October 29, 1948
Creator:
Filip, E. J.
Object Type:
Report
System:
The UNT Digital Library
TECHNICAL INFORMATION ON SOME RARER METALS OF HIGH MELTING POINT
None
Date:
November 29, 1948
Creator:
Barrett, Pauline & Seybolt, Alan U.
Object Type:
Report
System:
The UNT Digital Library
Atomic Displacements Produced by Fission Fragments and Fission Neutrons in Matter
About four-fifths of the energy of the fission process is shared by the two heavy fragments into which the nucleus splits. This energy, of about 80 Mev. per fragment, is transferred to the medium in which the fission takes place in two ways. First, because each fragment is stripped of about half of its electrons during most of its path, it will interact strongly with electrons and thus lose energy through ionizing collisions with other atoms. Secondly, the fragments will lose energy by elastic collisions with atoms as a whole. Each fragment leaves in its wake a cloud of moving electrons and atoms. This cloud will roughly resemble a cylinder whose radius will increase with time on account of the motion of the struck electrons and atoms. They may now investigate two features of the slowing down process. First as it affects the fragment, i.e. we calculate its range, straggling, etc. And secondly they may work out the motion of the cylinder of moving particles, its effect on the medium, etc.
Date:
June 29, 1949
Creator:
Ozeroff, J.
Object Type:
Report
System:
The UNT Digital Library
Events of importance for week ending June 29, 1949, Hanford Operations Office, Richland, Washington
This report details events of importance as reported by the Hanford Operations Office for the week ending June 29, 1949.
Date:
June 29, 1949
Creator:
Schlemmer, F. C.
Object Type:
Report
System:
The UNT Digital Library
Density and Viscosity of Solutions in the Tributyl Phosphate Process for Uranium Recovery
This report addresses the density and viscosity of solutions in the tributyl phosphate process for uranium recovery.
Date:
November 29, 1949
Creator:
Burger, L. L. & Slansky, C. M.
Object Type:
Report
System:
The UNT Digital Library
Hanford Works area investigation near serious accident, November 9, 1949
None
Date:
November 29, 1949
Creator:
Prudich, T.
Object Type:
Report
System:
The UNT Digital Library
Precipitation of plutonium and uranium from off-standard aqueons wastes
None
Date:
November 29, 1949
Creator:
Richards, R.B.
Object Type:
Report
System:
The UNT Digital Library
EXPERIMENTAL FACILITIES PROVIDED IN THE MATERIALS TESTING REACTOR. Preliminary Report
None
Date:
December 29, 1949
Creator:
Winkleblack, R.K.
Object Type:
Report
System:
The UNT Digital Library
A PreliminaryReport on the Mechanism of the Decomposition ofDiacetyl Peroxide in Acetic Acid
The decomposition of diacetyl peroxide in acetic acid-2-C{sup 14} has been studied, The activity of the products in general confirmed the mechanism of the reaction as proposed by Kharasch and Gladstone, The presence and distribution of activity in the methyl acetate produced in this reaction is not explained by the previously proposed mechanism. There was no appreciable exchange of acetic acid and diacetyl peroxide under the conditions of the reaction. Essentially no exchange of methyl acetate and acetic acid was observed when those reagents mere heated at 100 for five hours.
Date:
December 29, 1949
Creator:
Fry, A.J.; Tolbert, B.M. & Calvin, Melvin
Object Type:
Report
System:
The UNT Digital Library
100 Areas technical activities report -- Engineering, February, 1950
This report covers work done by the Physical Chemistry Group and the Pile Engineering Groups. Subjects covered are as follows: metal exposure details; slug corrosion details; pile control -- thimble removal study; Van Stone flange corrosion details; process tube corrosion details; carbon dioxide experiment; graphite sampling; special pile measurements; routine pile measurements; 105 technical laboratories; P-10; boiling studies; pile annealing studies; gas tube experiment; thermal conductivity and electrical resistivity; x-ray diffraction studies; and stored energy.
Date:
March 29, 1950
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
'Fission' of Medium Weight Elements
The fission reaction has been observed with high energy accelerator projectiles for elements as light as tantalum but has not been reported for medium weight elements. The present note presents evidence for the occurrence of reactions which are probably most properly described by the term 'fission' and which seem to occur with very small yield throughout the region where this type of reaction is only slightly exoergic or even endoergic with respect to mass balance. In the course of detailed investigation of the spallation of copper and the variation of the product yields with energy of the bombarding particle the threshold for formation of radioactive Cl{sup 38} (38-minute half-life) from elemental studied. The energetically most economical way in which Cl{sup 38} might be spallation reactions is by emission from the bombarded copper nucleus of nucleons in groups such as alpha-particles instead of single nucleons 0 The energetic requirements for the reaction Cu{sup 63}(p,pn6a)Cl{sup 38}, in which the maximum number of alpha-particles are emitted, include (1) the mass difference between the reactants and the products and (2) the excitation energy which the alpha-particles must have in order to pass over the coulombic barrier, Since the reaction is endoergic with respect to …
Date:
May 29, 1950
Creator:
Batzel, Roger T. & Seaborg, G. T.
Object Type:
Report
System:
The UNT Digital Library
Physical properties of Hanford metal waste
The Hanford metal wastes were divided into four categories: supernate - the liquid waste; hard sludge - dense agglomerates of poorly defined crystalline carbonates approximating the hardness of soft blackboard chalk; soft sludge - an easily slurried semi-solid consisting chiefly of needle-like phosphates; and recombined sludge - a representative sample of the solid wastes as received from Hanford, shown to be a mixture of hard and soft sludges in the ratio 2/3 by weight. The density of supernate, in the temperature range 24 to 74/sup 0/C, varied from 1.130 to 1.103 g/ml. Hard sludge density averaged 3.0 g/ml and that of soft sludge averaged 1.84 g/ml. The consistency, or apparent viscosity, as a function of temperature, shear rate, and solids content was measured individually on slurries of recombined, soft, and hard sludges using supernate as the suspending medium. Settling rates were also run on these 3 slurries as a function of solids content.
Date:
June 29, 1950
Creator:
Schilling, C.E.
Object Type:
Report
System:
The UNT Digital Library
A rapid, simple method for the determination of the radon content of water
The historical approach to the separation of radon from water is liberation of the radon from the sample by boiling under vacuum in the presence of a strong acid; flushing the liberated radon, with an inert gas, into an ionization chamber or an alpha proportional counters and measuring the collected activity. Such an analysis requires a manipulation time of approximately one hour, a waiting period of two to three hours before measurement to allow transitory equilibrium to be reached, and finally a measurement time, resulting in 4 to 6 hours for one analysis. In addition, specialized equipment including a vacuum train is required. If it is desired to count the alpha particles from radon and its daughters in a proportional counter, absorption trains to remove all oxygen, a poor counting gas, are required. The method presented herein requires only 20--25 minutes for a complete analysis and except for the beta counter utilizes standard laboratory equipment.
Date:
June 29, 1950
Creator:
Thorburn, R. C. & Healy, J. W.
Object Type:
Report
System:
The UNT Digital Library