Three-dimensional Numerical Investigation of Electron Transport with Rotating Spoke in a Cylindrical Anode Layer Hall Plasma Accelerator (open access)

Three-dimensional Numerical Investigation of Electron Transport with Rotating Spoke in a Cylindrical Anode Layer Hall Plasma Accelerator

The oscillation behavior described in [Tang et. al, Phys. Plasmas 19, 073519 (2012)] di ers too greatly from previous experimental and numerical studies to claim observation of the same phenomenon. Most signi cantly, the rotation velocity in [Tang et. al, Phys. Plasmas 19, 073519 (2012)] is three orders of magnitude larger than that of typical \rotating spoke" phenomena. Several physical and numerical considerations are presented to more accurately understand the numerical results of [Tang et. al, Phys. Plasmas 19, 073519 (2012)] in light of previous studies.
Date: August 27, 1012
Creator: Ellison, C. Leland; Matyash, K.; Parker, J. B.; Raitses, Y. & Fisch, N. J.
Object Type: Report
System: The UNT Digital Library
Engineering report on the Smackover oil and gas field, Union and Ouachita Counties, Arkansas. [Underground conditions and their application to drilling and production problems] (open access)
Project 9536 - HEW - 300 Area: Metals turnings fire hazard (open access)

Project 9536 - HEW - 300 Area: Metals turnings fire hazard

This report discusses the use of coal tar to extinguish potential magnesium fires in stored metal turnings at the Hanford Engineer Works. The report is dated August 11, 1943. (JL)
Date: August 11, 1943
Creator: Huey, W. R.
Object Type: Report
System: The UNT Digital Library
Fission Spectrum (open access)

Fission Spectrum

Measurements of the spectrum of the fission neutrons of 25 are described, in which the energy of the neutrons is determined from the ionization produced by individual hydrogen recoils. The slow neutrons producing fission are obtained by slowing down the fast neutrons from the Be-D reaction of the Stanford cyclotron. In order to distinguish between fission neutrons and the remaining fast cyclotron neutrons both the cyclotron current and the pusle amplifier are modulated. A hollow neutron container, in which slow neutrons have a lifetime of about 2 milliseconds, avoids the use of large distances. This method results in much higher intensities than the usual modulation arrangement. The results show a continuous distribution of neutrons with a rather wide maximum at about 0.8 MV falling off to half of its maximum value at 2.0 MV. The total number of netrons is determined by comparison with the number of fission fragments. The result seems to indicate that only about 30% of the neutrons have energies below .8 MV. Various tests are described which were performed in order to rule out modification of the spectrum by inelastic scattering.
Date: August 18, 1943
Creator: Bloch, F. & Staub, H.
Object Type: Report
System: The UNT Digital Library
Project 9536, metal turnings - fire hazard (open access)

Project 9536, metal turnings - fire hazard

The turnings have proved to be highly inflammable and subject to spontaneous ignition. Several experiments have been conducted at Herring-Hall-Marvin Safe Company, Hamilton, Ohio, and Baker Brothers, Inc., Toledo, Ohio, and in addition there have been a number of accidental fires, of which at least three were spontaneous. Fires of quantities ranging from several pounds to several hundred pounds have been experienced and a number of extinguishers have been tried. Records of this work are available in our files. While the work to date does not constitute an exhaustive survey of the problem, we believe that it is now safe to outline precautionary and protective measures.
Date: August 27, 1943
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Coating of tubealloy slugs (open access)

Coating of tubealloy slugs

None
Date: August 5, 1944
Creator: Boller, E. R.
Object Type: Report
System: The UNT Digital Library
Hanford Engineer Works monthly report, July 1944 (open access)

Hanford Engineer Works monthly report, July 1944

This progress report discusses activities at Hanford Engineer Works for the month of July, 1944. The organization size increased rapidly in July, jumping from 1384 to 1886, an increase of 502 employees. Shortages existed on special lines such as electricians, instrument mechanics, and power operators. The opportunities to interview and employ Construction personnel improved as the Construction, organization moved past its peak employment figure. 269 houses were completed in Richland and 370 occupancies were reported, reducing the backlog of empty houses due to slow furniture movements. A total of 1530 houses or 35.6% of the village is now occupied. The overall canning yield increased from 63% to 75% while production leveled off at approximately two-thirds of design capacity. The metal machining operation and the test pile operated on a one shift-six day per week basis. The portion of the 100-B Area from the pump house through the filter plant and including the Power House was taken over by Operations on July 25. The Power House in the 200-W Area was started and flushing of process lines with water and steam got under way in the canyon. A new department was formed to control the Protection activities of the plant.
Date: August 8, 1944
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Hanford Engineer Works technical progress letter No. 6, August 11, 1944--August 17, 1944 (open access)

Hanford Engineer Works technical progress letter No. 6, August 11, 1944--August 17, 1944

This report discusses work at the Hanford engineering Works` 100 and 200 areas for August 11th through August 17th, 1944. Topics discussed include canning, slug recovery, testing and miscellaneous items. (JL)
Date: August 19, 1944
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Explosives-TNX Technical Division, Hanford weekly report for period ending August 29, 1944 (open access)

Explosives-TNX Technical Division, Hanford weekly report for period ending August 29, 1944

Hood Worthington reports that slug testing in autoclaves shows improvement to substantiate a meeting on the initial loading of pile B and production for B.F. Babcock report examining five drafts of Operating Standards for the 100 Area. C.W.J. Wende are considering alternative loading schemes due to the observation that lead dummy slugs at the inlet end of a tube may mushroom when subjected to the stress of discharging. J.A. Wheeler reports on heavy metal content of reclaimed slugs compared to normal slugs. Also, temperature measurements on slugs in 105-B and corrosion rates of heavy metals are given. P.F. Gast reports on safety rod control calculations. T.B. Drew report on volume estimations of the B pile and analysis of data from leakage tests. Lastly, W.K. Woods reports on testing of solid aluminium dummies in the W-tube using an electric needle technique to detect motion of the pieces. Water flow considerations are discussed.
Date: August 30, 1944
Creator: Worthington, H.
Object Type: Report
System: The UNT Digital Library
Classified information required by operators and others exposed to radiation hazards (open access)

Classified information required by operators and others exposed to radiation hazards

Information required by operators exposed to radiation hazards is discussed. All areas of the plant are subjected to radiation hazards similar to those in the radium industry. Personnel in these areas are required to wear pencil meters and special badges that are evidently not solely for identification. They are required to submit to medical examinations more stringent and frequent than usual. They are required to wear heavy gloves in one location, thin gloves in another, disposable hats or rubbers in another. They are required to stay away from familiar objects that they could handle a few days before. They observe health instrument men making readings at points not tangibly influenced by the operations. Under these circumstances, operators cannot perform their duties intelligently without being advised of the general nature of the risks involved. Since the general beta and gamma hazard occurs at nearly all points and cannot reasonably be concealed, this is the feature selected for general information. The special hazard of 105 Building can then be concealed, and the origin, but not the nature of the hazard in 231 likewise concealed.
Date: August 31, 1944
Creator: Parker, H. M.
Object Type: Report
System: The UNT Digital Library
Investigation of the System Methyl Ether and Methyl Borate-Boron Fluoride Complex (open access)

Investigation of the System Methyl Ether and Methyl Borate-Boron Fluoride Complex

None
Date: August 1, 1945
Creator: McCaulay, D. A. & Rittschof, W. L.
Object Type: Report
System: The UNT Digital Library
The metal fabrication program for the Clinton Engineer Works and the Hanford Engineer Works. Including the Dummy Slug Program and the Unbonded Slug Program -- Project 1553 (open access)

The metal fabrication program for the Clinton Engineer Works and the Hanford Engineer Works. Including the Dummy Slug Program and the Unbonded Slug Program -- Project 1553

The uranium slugs were used as the charge into the pile for the manufacture of minute quantities of plutonium. So little was known of uranium`s commercially adaptable physical properties that it was relegated almost to the category of a laboratory curiosity. A series of experimental and developmental programs were inaugurated to determine not only the extrudability, machinability and other physical properties, but also the influence on these of microscopic quantities of impurities present in the uranium. This historical document describes these early studies in the following sections: exceptional characteristics of the slug program; extrusion; drawing, waging and rolling; outgassing and straightening; Project 1030 (procurement of an additional sixty tons of finished slugs over and above that quantity originally supplied to the Clinton Laboratories) Machining, grinding and grooving; development of canning methods; production of canned slugs; and The Dummy Slug program.
Date: August 1, 1945
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Slip-Casting of Non-Plastic Refractory Materials (open access)

Slip-Casting of Non-Plastic Refractory Materials

None
Date: August 1, 1945
Creator: Utter, J. L.
Object Type: Report
System: The UNT Digital Library
A study of the Quartz Fiber Balance No. 1 (Information Report) (open access)

A study of the Quartz Fiber Balance No. 1 (Information Report)

This article is a de-classified document produced by Monsanto Chemical Company-Unit III in Dayton, Ohio. The date of the document is August 1, 1945, and the subject is the operation of a quartz fiber microbalance. In particular, the document examines whether temperature fluctuations affect the operation of the instrument. Data was presented to show that the accuracy of the instrument was indeed affected by ambient temperature.
Date: August 1, 1945
Creator: Haring, M. M.
Object Type: Report
System: The UNT Digital Library
The evolution of iodine during metal dissolution (open access)

The evolution of iodine during metal dissolution

During the dissolution in nitric acid of uranium metal which has been irradiated in a pile, radio-iodine (8.0 day) and radio-xenon (5.3 day) are liberated along with the oxides of nitrogen. Since in the plant these gases are discharged into the atmosphere, the presence of the activities (particularly radio-iodine because of its greater chemical reactivity) presents a physiological hazard. As a consequence, the cooling period (that is, the time between the discharge of the metal from the pile and the dissolution of the metal in nitric acid for the extraction of the product) should be sufficiently long so that the activities will have decreased through decay to the point where their concentrations in the atmosphere will not exceed 2.5 {times} 10{sup {minus}13} curies/cc* and 5 {times} 10{sup {minus}11} curies/cc* for radio-iodine and radio-xenon, respectively. A study was made of the existing information concerning the liberation of iodine and xenon during the dissolution of the metal and the information was summarized in a memorandum. At that time it was apparent that radio-iodine would present the greater hazard, and that very little was known about the factors governing the liberation of iodine during the metal dissolution. For this reason, an investigation of …
Date: August 2, 1945
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Tolerable Concentration of Product in Drinking Water (open access)

Tolerable Concentration of Product in Drinking Water

None
Date: August 4, 1945
Creator: Parker, H. M.
Object Type: Report
System: The UNT Digital Library
100-D unit purge (open access)

100-D unit purge

None
Date: August 5, 1945
Creator: Dahlen, P. A.
Object Type: Report
System: The UNT Digital Library
Spectroscopic analysis of pile gas (open access)

Spectroscopic analysis of pile gas

This memorandum provides results of spectroscopic analysis of pile gas which were completed on August 4, 1945.
Date: August 10, 1945
Creator: Dineen, F. H.
Object Type: Report
System: The UNT Digital Library
Production of Finished Metal (open access)

Production of Finished Metal

None
Date: August 15, 1945
Creator: Thompson, Dr. J. G.
Object Type: Report
System: The UNT Digital Library
VACUUM PROBE, STANDARD LEAKS, AND NEEDLE VALVE FOR USE WITH THE HELIUM LEAK DETECTOR (open access)

VACUUM PROBE, STANDARD LEAKS, AND NEEDLE VALVE FOR USE WITH THE HELIUM LEAK DETECTOR

None
Date: August 16, 1945
Creator: Samuel, A.J.
Object Type: Report
System: The UNT Digital Library
Developments in the Casting Department of the Metal Production Plant at Iowa State College. Special Report on the Casting of Uranium at Iowa State College (open access)

Developments in the Casting Department of the Metal Production Plant at Iowa State College. Special Report on the Casting of Uranium at Iowa State College

This report addresses the casting of uranium rods at iowa state college.
Date: August 25, 1945
Creator: Wilhelm, H. A.
Object Type: Report
System: The UNT Digital Library
[Plant data for 200 Areas] (open access)

[Plant data for 200 Areas]

This document provides data for 200 Area plants for the period of November 30, 1945 to June 10, 1946 (Building 292-B) and November 30, 1945 to August 22, 1946 (Building 292-T).
Date: August 31, 1945
Creator: Lindvig, P. E.
Object Type: Report
System: The UNT Digital Library
100 Areas, July 23 through July 29. For technical progress letter number 108 (open access)

100 Areas, July 23 through July 29. For technical progress letter number 108

The weekly progress for D and F piles is given. Status of the test to determine the cause of white deposits on the horizontal control rods of the F pile is given. Also discussed are studies of process water control and pressure drop, corrosion, and graphite expansion. Test results indicate that graphite expansion has not seriously limited discharge of process tubes.
Date: August 2, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
Critical dimensions of water-tamped slabs and spheres of active material (open access)

Critical dimensions of water-tamped slabs and spheres of active material

The magnitude and distribution of the fission rate per unit area produced by three energy groups of moderated neutrons reflected from a water tamper into one side of an infinite slab of active material is calculated approximately in section II. This rate is directly proportional to the current density of fast neutrons from the active material incident on the water tamper. The critical slab thickness is obtained in section III by solving an inhomogeneous transport integral equation for the fast-neutron current density into the tamper. Extensive use is made of the formulae derived in The Mathematical Development of the End-Point Method by Frankel and Goldberg. In section IV slight alterations in the theory outlined in sections II and III were made so that one could approximately compute the critical radius of a water-tamper sphere of active material. The derived formulae were applied to calculate the critical dimensions of water-tamped slabs and spheres of solid UF{sub 6} leaving various (25) isotope enrichment fractions.
Date: August 6, 1946
Creator: Greuling, E.; Argo, H.; Chew, G.; Frankel, M. E.; Konopinski, E. J.; Marvin, C. et al.
Object Type: Report
System: The UNT Digital Library