15 Matching Results

Search Results

Advanced search parameters have been applied.

PLUTONIUM GRAPHITE ASSEMBLIES

Description: Neutron multiplication measurements and theoretical calculations were made on cylindrical assemblies of graphite and plutonium disks. (auth)
Date: September 29, 1958
Creator: Goodwin, A. Jr. & Schuske, C.L.
Partner: UNT Libraries Government Documents Department

CRITICALITY MEASUREMENTS ON PLUTONIUM METAL PRELIMINARY TO THE DESIGN OF A MELTING CRUCIBLE

Description: A series of neutron multiplication measurements were made on assemblies of Pu metal (density 15.8 g/cm/sup 3/) in order that a safe melting crucible could be designed for charges of 10 kg or more. Suitable ingot shapes and masses that could be rolled into sheets were determined. Final charge limits must be determined by making in situ measurements with the actual production furnace when the furnace and crucible are compieted. (H.G.G.)
Date: June 1, 1956
Creator: Schuske, C.L.; Arthur, M.G. & Smith, D.F.
Partner: UNT Libraries Government Documents Department

SPECTROPHOTOMETRIC DETERMINATION OF ALUMINUM IN PLUTONIUM-ALUMINUM ALLOYS

Description: The method described involves the spectrophotometric determination of aluminum in plutoniumaluminum alloys following the separation of the excess plutonium and small amounts of iron from the aluminum by extraction of the cupferrate into chloroform. The aluminum concentration is determined on a Beckman Model DU spectrophotometer by measuring the optical density of the aluminum 8-hydroxyquinolate in chloroform at 385 millimicrons (m mu ). A correction is made for the small amount of plutonium which carries through the cupferron extraction and forms plutonium 6hydroxyquinolate along with aluminum. This is done by reading the optical density at 500 m mu and 650 m mu and using these values to correct the 385 m mu optical density reading. (auth)
Date: November 1, 1955
Creator: Cleveland, J.M. Jr. & Nance, P.D.
Partner: UNT Libraries Government Documents Department

PLUTONIUM GRAPHITE ASSEMBLIES--PART II

Description: Neutron multiplication measurements were made on a number of cylindrical assemblies of Pu and graphite disks. S/sub n/ calculations were made on homogeneous mixtures of Pu and graphite with varying C/Pu ratios and varying reflector thickness. (auth)
Date: August 10, 1959
Creator: Goodwin, A. Jr. & Schuske, C.L.
Partner: UNT Libraries Government Documents Department

PLUTONIUM PLEXIGLAS ASSEMBLIES. PART II

Description: Neutron multiplication measurements were made on tamped and untamped cylindrical assemblies. The assemblies consisted of plutonium metal sheet mcderated with Plexiglas. Experiments were performed to evaluate the effects of inhomogeneity. This work is a continuation of RFP-178. (auth)
Date: April 1, 1960
Creator: Bidinger, G.H.; Schuske, C.L. & Smith, D.F.
Partner: UNT Libraries Government Documents Department

Plutonium Plexiglas Assemblies

Description: Neutron multiplication measurements were made on tamped and untamped cylindrical assemblies. The assemblies consisted of Pu metal sheet moderated with Plexiglas, Experiments were performed to evaluate the effects of inhomogeneity. (auth)
Date: January 20, 1960
Creator: Schuske, C. L.; Bidinger, G. H.; Goodwin, A., Jr. & Smith, D. F.
Partner: UNT Libraries Government Documents Department

PLUTONIUM HANDLING FACILITIES FOR RADIOGRAPHY

Description: Since any radiography must be performed in an enclosed system, an enclosed glove box was constructed to facilitate radiographic operations. Tests show that no significant detail is lost in radiographing dense materials greater than 0.020 inch through 0.120 inch of aluminum using energies in the 1 Mev range. (auth)
Date: April 12, 1962
Creator: Dighton, A.L.; Sampson, J.C. & Stump, W.D.
Partner: UNT Libraries Government Documents Department

THE RADIOCHEMICAL DETERMINATION OF AMERICIUM IN THE PRESENCE OF PLUTONIUM IN URINE

Description: Americium is precipitated with bismuth phosphate from a nitric acid- digested urine sample. The bismuth phosphate is wet-ashed, dissolved in 6N--HCl, and the americium is precipitated with lamthanum fluoride. The lanthanum fluoride is metathesized to the hydroxide, and the precipitate is dissolved in 2N- nitric acid. Removal of concurrently metabolized plutonium is accomplished by liquid-liquid extraction of the nitric acid soiution with 0.1-M di(2- ethylhexyl)phosphoric acid (D2EIIPA) in chloroform. The purified americium is carried on lanthanum fluoride. The precipitate is slurried onto a stainless steel plamchet and counted in a low-background proportional alpha counter. The method is effective for quantitative separation from plutonium and uranium. Quantities of the order of 0.5 dpm of americium cam be detected in a urine sample. (auth)
Date: January 1, 1961
Creator: Bokowski, D.L.
Partner: UNT Libraries Government Documents Department

RADIOACTIVE FILTER BANK FIRE DETECTION SYSTEMS

Description: The detection of radioactive air filter fires is discussed. Criteria requirements for a suitable fire detection system were established. The applicability of aircraft-type fire detection systems for this use was evaluated. The operation of a discrete eutectic salt type continuous fire detection tubing system is outlined. (M.C.G.)
Date: December 27, 1961
Creator: Walker, R.W.
Partner: UNT Libraries Government Documents Department

NUCLEAR SAFETY EXPERIMENTS ON PLUTONIUM AND ENRICHED URANIUM HYDROGEN MODERATED ASSEMBLIES CONTAINING BORON

Description: Neutron multiplication measurements were made on cylindrical assemblies containing layers of plutonium metal disks, Plexiglas disks, and boron carbide impregnated Epolene-n disks. In addition to the above nuclear safety measurements, curves were drawn for a 42-in.diameter stainless-steel tank containing an aqueous solation of UO/sub 2/(NO/sub 3/)/sub 2/ and poisoned with Pyrex Raschig rings. Attempts were made to calculate sphere, infinite cylinder and slab shapes from the experimental finite cylindrical assemblies. (auth)
Date: July 1, 1960
Creator: Schuske, C.L.; Bidinger, G.H. & Smith, D.F.
Partner: UNT Libraries Government Documents Department