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Correlation of actual river water analyses with CMX raw water analyses
Data acquired from the sampling of Columbia River water January 11, 1944, is presented. The water was analyzed for temperature, dissolved oxygen, and iron. The results were compared with results from samples attained from selected taps in the C.M.X. building.
Date:
November 1, 1944
Creator:
Kidder, C. P. & Frank, R. D.
Object Type:
Report
System:
The UNT Digital Library
METALLURGY OF TUBALLOY. Progress Report to University of Chicago
None
Date:
November 1, 1944
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Diffraction Effects in Neutron Attenuation Measurements
All errors due to diffraction effects in a neutron attenuation experiment are computed. Also a special experiment to measure the forward intensity of diffracted neutrons from lead and copper is described, and the results given. These agree with the theoretical values.
Date:
November 1, 1947
Creator:
McMillan, E. M. & Sewell, D. C.
Object Type:
Report
System:
The UNT Digital Library
Diffraction Effects in Neutron Attenuation Measurements
All errors due to diffraction effects in a neutron attenuation experiment are computed. Also a special experiment to measure the forward intensity of diffracted neutrons from lead and copper is described, and the results given. These agree with the theoretical values.
Date:
November 1, 1947
Creator:
Sewell, D. C. & McMillan, E. M.
Object Type:
Report
System:
The UNT Digital Library
The Eight New Synthetic Elements
In an early continuation of the investigation of the radioactive isotopes of element number 43 (technetium) Segre and Seaborg produced by the deuteron and neutron bombardment of molybdenum the isotope Tc{sup 99}, which they observed to decay by means of an isomeric transition with a half-life of 6.6 hours to a lower isomeric state with a half-life greater than 40 years. The upper isomeric state of this isotope was observed by Segre and C. S. Wu to be produced in the fission of uranium and more recently R. P. Schumann and also D. C. Lincoln and W. H Sullivan working on the Plutonium Project of the Manhattan District have independently observed the beta-particles of half-life about 10 years due to the lower isomeric state. Later work by E. E. Motta and G. E. Boyd sets a more accurate value of 9.4 x 10{sup 5} years for this half-life. Since this isotope is formed in rather large amounts, namely, a fission yield of 6.2%, in the slow neutron induced fission of uranium it is now possible to isolate technetium in weighable amounts and in rather substantial quantities. For example, a uranium pile operating at a power level of 10{sup 5} kw …
Date:
November 1, 1947
Creator:
Seaborg, Glenn T.
Object Type:
Article
System:
The UNT Digital Library
The Eight New Synthetic Elements
None
Date:
November 1, 1947
Creator:
Seaborg, Glenn T.
Object Type:
Article
System:
The UNT Digital Library
Excitation Function of the Reaction C12(n,2n)C11 at High Energies
The excitation curve for the reaction C{sup 12}(n,2n)C{sup 11} has been calculated for energies up to 100 Mev. The calculations were done as described in the preceding letter for the similar reaction of C{sup 12} under proton bombardment. The results of the calculations for 50% charge exchange are shown in Figure 1. The calculated cross section for the reaction at 90 Mev is: .011 barns for 100% charge exchange and .013 barns for 50% charge exchange. The experimental value is 0.025 {+-} .004 barns. The ratio of the cross section of the reaction C{sup 12}(pnpn)C{sup 11} to the cross section of the above reaction at 90 Mev is 5.8 for 100% charge exchange and 3.8 for 50% charge exchange. The experimental ratio is 2.7 at 90 Mev. This difference in cross sections between the two reactions is established by two factors. Firstly, there is the part played by charge exchange in the C{sup 12}(pnpn)C{sup 11} reaction which leads to excited N{sup 12} with the subsequent boiling off of a proton, while a similar exchange process cannot take place for the C{sup 12}(n2n)C{sup 11} reaction. Secondly, there is the difference between the contributions of the knock out process as a result …
Date:
November 1, 1947
Creator:
Heckrotte, Wolff & Wolff, Peter
Object Type:
Report
System:
The UNT Digital Library
Excitation Function of the Reaction C12(p,pn)C11 at High Energies
Chupp and McMillan have recently measured the excitation curve for the reaction C{sup 12}(pnpn)C{sup 11} at high energies. Using the model of the nucleus described by Serber, the excitation curve of the above reaction has been calculated for energies up to 100 Mev. The excitation of the nucleus is determined on the basis that the incident proton makes individual collisions with the nucleons, the transferred energy exciting the nucleus. n-p collisions are taken to be three times more probable than n-n or p-p collisions. Charge exchange is assumed. The calculations were made for both 50% and 100% charge exchange. The decay of the excited nucleus is treated by the usual evaporation mode.
Date:
November 1, 1947
Creator:
Heckrotte, W. & Wolff, Peter
Object Type:
Report
System:
The UNT Digital Library
Phosphorus Turnover and Photosynthesis
The participation of phosphorus in biological oxidation-reduction reactions of the type found in glycolysis ADP + PO{sub 4}H{sup -} + 3-phosphoglyceraldehyde + DPN{sup +} = 3-phosphoglycerate{sup -} + 2H{sup +} + DPNH + ATP has suggested theories in which similar reactions are proposed for photosynthesis. In these theories the reducing power of photosynthesis is utilized not only for reduction of carbon dioxide but also, by means of coupled oxidations, for the generation of high-energy phosphate bonds, or in the last reference directly for the generation of high-energy phosphate. Since in these theories acyl phosphate is formed from inorganic phosphate, they are amenable to proof without isolation of particular intermediates, by means of radioactive phosphorus. It would be expected that the rate of conversion of inorganic phosphate to organic phosphate would be greater in light than in the dark. They have investigated this possibility under a variety of conditions and are unable to substantiate the theories.
Date:
November 1, 1947
Creator:
Aronoff, Sam & Calvin, Melvin
Object Type:
Report
System:
The UNT Digital Library
Phosphorus Turnover and Photosynthesis
The participation of phosphorus in biological oxidation-reduction reactions of the type found in glycolysis ADP {ne} PO{sub 4}H{sup -} + 3-phosphoglyceraldehyde + DPN{sup +} = 3-phosphoglycerate{sup -} + 2H{sup +} + DPHN + ATP has suggested theories in which similar reactions are proposed for photosynthesis. In these theories the reducing power of photosynthesis is utilized not only for reduction of carbon dioxide but also, by means of coupled oxidations, for the generation of high-energy phosphate bonds, or in the last reference directly for the generation of high-energy phosphate. Since in these theories acyl phosphate is formed from inorganic phosphate, they are amenable to proof without isolation of particular intermediates, by means of radioactive phosphorus. It would be expected that the rate of conversion of inorganic phosphate to organic phosphate would be greater in light than in the dark. They have investigated this possibility under a variety of conditions and are unable to substantiate the theories.
Date:
November 1, 1947
Creator:
Calvin, Melvin
Object Type:
Report
System:
The UNT Digital Library
Progress Report for 1947
The year 1947 has witnessed the dawn of a new era of atomic science, a flowering of fundamental knowledge of the nature of matter which appears to be unsurpassed even by that period of the 1930's which led to the age of plutonium. A great new cyclotron, an atom-smasher ten times more powerful than the one which brought plutonium into the world, has carried mankind over a new horizon of sub-atomic space. It has brought scientists at last to grips with the infinitely small and rapid forces, until now beyond reach, which operate within the incredibly tiny distances of nuclear space. On the new energy frontier created by the giant machine, now laws govern nuclear reactions. methods are at hand, heretofore unavailable, which permit the measurement and determination of the nature of sub-atomic forces. Under ultra-high energy bombardment, the nucleus presents a different appearance from the nucleus of Bohr and Rutherford, the nucleus of atomic energy fission. The new exploration of the atom has been sponsored by the Atomic Energy Commission with the giant, new 4000-ton cyclotron in the Radiation Laboratory of the University of California. This is the thirdmajor machine built by the Director of the Laboratory and inventor …
Date:
November 1, 1947
Creator:
Authors, Various
Object Type:
Report
System:
The UNT Digital Library
Summary of the Reseach Progress Meeting
A 1,000 Mev synchrotron is under construction. The magnet will be a ring magnet containing about 900 tons of steel. The plates are of 1.2 inch steel with a 0.1 percent carbon content. A diagram of the cross section of this magnet is given in Figure 1. The design of the vacuum chmnber presents some difficulties since the space behind the gap is not large enough to permit easy access to the windings and to the vacuum space behind the gap. The field strength at the gap is 15,000 gauss with a 1 sec. rise time. A d.c. generator of 1,000 v and 10,000 amps and a flywheel will be used to energize the magnet and store the energy. Plans for the vacuum system are not complete, but probably a porcelain system will be used. This will reduce the gap quite considerably. It is planned to inject at 3,000 volts. The energy added to be about 200 ev per revolution. The frequency range is 250 kc/sec to 10 mc/sec; the power required is 10 Kw. A diagrammatic view of the electrical arrangement of the r.f. system is given.The variable inductance is a coil tipped at variable pitch into a pool …
Date:
November 1, 1947
Creator:
O'Brien, Inez
Object Type:
Report
System:
The UNT Digital Library
Summary of the Research Progress Meeting
This summary discusses the following topics: (1) Neutron Scattering. By R. Hildebrand. A series of measurements have been made of the angular distribution of neutrons scattered from small spheres of various materials placed in the neutron beam of the l84-inch cyclotron. The scattered neutrons were detected by copper covered carbon detectors placed in a symmetrical arrangement about the scatterer. The carbon detectors, which wore activated by the neutrons through the C{sup 12}(n, 2n)C{sup 11} reaction, were counted using an arrangement involving four counting tubes. The copper around the detectors served the purpose of stopping any protons. A carbon disk monitor was placed at the collimating channel in the cyclotron shield. This disk Was also counted by the same arrangement. (2) Electrical Resistance of the Blood. By R. Rosenthal. It has been found that animals exposed to total body irradiation developed in their blood an anti-coagulant called heparin. This substance, which can be produced synthetically, has the property of prolonging the clotting time of the blood. In an article which appeared in 'Science' some work was reported on the variation of the electrical resistance of the blood with the amount of heparin present, If some simple relationship could be found between …
Date:
November 1, 1947
Creator:
Wakerling, R.K.
Object Type:
Report
System:
The UNT Digital Library
Calorimetry research progress report
This document is a November 1948 Calorimetry Research Progress Report from the Mound Laboratory. Updates are given in the following areas: (1) development of micro and macrocalorimeters of the resistance-bridge type, (2) study and design of a rod calorimeter, (3) half-life of Postum, (4) evaluation of various calorimeter types, (5) applied mathematics, (6) materials, and (7) future efforts.
Date:
November 1, 1948
Creator:
Haring, M. M.
Object Type:
Report
System:
The UNT Digital Library
Index to Lexington Project Reports
None
Date:
November 1, 1948
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Physics progress report
This document is the November 1948 Physics Division Progress Report from the Mound Laboratory. Items covered include: (1) measurement of the vapor pressure of Postum by effusion and the quartz-sickle gauge, (2) preparation of a Postum sample for x-ray emission spectroscopy studies, (3) possible errors in the vacuum balance, (4) construction of a gamma counter, and (5) preparation of a postum bromide sample.
Date:
November 1, 1948
Creator:
Haring, M. M.
Object Type:
Report
System:
The UNT Digital Library
Effect of Tensor Range in Nuclear Two-Body Problems
The interaction between neutron and proton in the triplet state has been investigated. The central and tensor potentials have been assumed to be of the ''meson'' type but of possibly different ranges. The variational-iterational method has been utilized to determine V{sub o}, the strength of the central potential, and {gamma}V{sub o}, the strength of the tensor potential. A wide variation in the values of both central and tensor ranges were included. Calculations of this type have proved difficult in the past principally because of the sensitivity of the results to the quadrupole moment Q of the deuteron for which accurate wave functions are necessary. It would be desirable to have a more accurate value of Q deduced from experiment. The percent D state in the deuteron and the effective triplet range have also been computed. The results are applied to the discussion of the magnetic moment of the deuteron, the photoelectric disintegration of the deuteron, and neutron-proton scattering. It is concluded that experimental information on neutron-proton interaction at their present accuracy does not determine the range of the tensor forces except within rather broad limits. A decrease in the uncertainty in the triplet range by an order of magnitude would …
Date:
November 1, 1949
Creator:
Feshbach, H.; Schwinger, J. & Harr, J.A.
Object Type:
Report
System:
The UNT Digital Library
HEALTH PHYSICS ASPECTS FOR SPRU OPERATION AT LEVELS OF ACTIVITY GREATER THAN FIVE PER CENT
None
Date:
November 1, 1950
Creator:
German, L.L.
Object Type:
Report
System:
The UNT Digital Library
Long term reactivity gains
This report is a letter describing the reactivity gains of the Hanford Production Reactors.
Date:
November 1, 1950
Creator:
Gast, P.F.
Object Type:
Report
System:
The UNT Digital Library
THE PREPARATION OF A LITHIUM DEUTERIDE CASTING AND SOME PROPERTIES OF LITHIUM DEUTERIDE
None
Date:
November 1, 1950
Creator:
McKisson, R.L.
Object Type:
Report
System:
The UNT Digital Library
A Surface Protective System
Part of the design and development work connected with the erection of the chemistry "cave" in the "GP" Building entailed an investigation of various protective measures for materials of construction. This work was based on the observations and recommendations of personnel engaged in work at a similar installation at Argonne National Laboratory.
Date:
November 1, 1950
Creator:
Brown, W. T.
Object Type:
Report
System:
The UNT Digital Library
Particle size of particulate matter in the dissolver off-gas stream
This report discusses particle size measurements with a modified cascade impactor of the particulate matter in the dissolver off-gases during the period of maximum gas evolution, and during the air sparge of the dissolver solution after the completion of the dissolving cycle which indicate that the mass-size median of the particles was less than 0.1 micron in both cases. The measurements were made, unfortunately, at a time when the efficiency of the silver reactor upstream to the sampling point was low enough to permit appreciable amounts of iodine through to the cascade impactor. The samples were therefore permitted to decay for thirty-five days before the relative amounts of radioactivity on the stages of the impactor and the follow- up filter paper were evaluated. The size of the particles obtained, 0.1 micron, should be considered primarily as an order of magnitude rather than an absolute value, because the cascade impactor (as well as any other impaction device) can not give an accurate value for the particle size in this size range.
Date:
November 1, 1951
Creator:
Weidenbaum, B.
Object Type:
Report
System:
The UNT Digital Library
Recuplex Feasibility Report
The recuplex Process is proposed by the Process Assistance group of the Separations Technology Unit as a feasible method for the simultaneous and efficient recovery of waste materials in the 234--5 Building and direct coupling of the product steams from the Redox and Bismuth Phosphate Processes to the 235-5 Building operations. Demonstration of the feasibility of the process has been accomplished through the cooperative efforts of the Chemical Research, Chemical Development, and Process Assistance groups of the Separations Technology Unit and LTS described in this document.
Date:
November 1, 1951
Creator:
Blasewitz, A. G.
Object Type:
Report
System:
The UNT Digital Library
Technical activities report research and development & 234-5 metallurgy groups metallurgy - pile technology unit, October 1951
This is a technical progress report for the Research and Development, and 234-5 Metallurgy Groups of the metallurgy-pile technology unit for the period Oct 1951. Numerous reports are attached under the general areas: P-10 alloy development; uranium metallurgy; metallurgy of Hanford structural materials; radiometallurgy, facility development; plutonium metallurgy program; canning development; plant service work; 234-5 metallurgy group, plutonium metallurgy program.
Date:
November 1, 1951
Creator:
Schalliol, W.L. & Wick, O.J.
Object Type:
Report
System:
The UNT Digital Library