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A Liquid-filled Proportional Counter

Description: We report properties of single-wire proportional chambers and multiple-wire ionization chambers filled with liquid xenon. Proportional multiplication is seen for anode fields > 10{sup 6} volts/cm (anode-cathode voltage> 1 kV for a 3.5-{micro}-diam anode wire). The efficiency for detecting ionizing radiation is {approx} 100%. The time resolution of the chambers is {+-} 10{sup -7} sec. We attained a spatial resolution of {+-} 15 {micro} with a multiwire ionization chamber, considerably bett… more
Date: June 1971
Creator: Muller, Richard A.; Derenzo, Stephen E.; Smadja, Gerard; Smith, Dennis B.; Smits, Robert G.; Zaklad, Haim et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Recent Total Neutron Yield Measurements

Description: The report summarizes results obtained since September, 1951, by total neutron yield experiments using 190 Mev deuterons and the MnSo4 tank method (UCRL-1375 and UCRL-1480). A new method of beam monitoring has resulted in establishing firmly the absolute yield for solid uranium and thorium primary targets backed by a solid uranium secondary. The beam monitoring was done by using a primary target built into a faraday cup. This method circumvents errors caused by recombination in the ionizatio… more
Date: January 21, 1951
Creator: Crandall, W. & Millburn, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air Sampling Chamber for S.I.R.

Description: Abstract: An ionization chamber to monitor air for beta activity is described. Operating curves are given, as well as results of shock and vibration tests. Recommendation for improved design are included.
Date: August 8, 1952
Creator: Dewes, R. A. & Goodale, E. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ionization Chambers for Environmental Radiation Measurements

Description: From Introduction: "In this report, a detailed description will be given of each of the ionization chambers used, including in each case a discussion of the methods of calibration and of techniques utilized in inferring dose readings."
Date: February 1963
Creator: Shambon, Arthur; Lowder, Wayne M. & Condon, William J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Linear, Transparent Beam Integrator

Description: Abstract: "A fast, linear air-ionization chamber has been developed for integrating and monitoring external heavy-particle beams. It consists of a thin-windowed air chamber in which the beam ionization light is viewed by a photomultiplier whose output is fed directly to a standard electrometer."
Date: February 12, 1954
Creator: Kitchen, Sumner W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Report on a Differential Ionization Chamber

Description: From abstract: "A chamber was constructed with three electrodes dividing the space into two regions of 800 c.c. The surfaces of one of these were coated with boron carbide. With opposite potentials on two electrodes, ion currents to the collecting electrode due to gamma rays were practically cancelled and ion currents due to alpha rays induced by slow neutrons were measured."
Date: July 15, 1945
Creator: Broxon, James William
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Experimental Study of the Performance of a Cavity Type Ionization Chamber

Description: Abstract: "Comparisons between calorimetric and ionization chamber measurements of the power generated in graphite by absorption of energetic gamma rays have been carried out. The results serve as a calibration of the chamber. They also serve to test the consistency between the theoretical performance of this type of chamber and previously determined values for the factors which relate ionization in the chamber to energy absorption in the walls."
Date: 1952
Creator: Jenks, G. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Ionization Chamber Method for the Standardization of Tritiated Water Samples

Description: Ionization measurements of water vapor in vapor-liquid equilibrium were made with a series of chambers on a tritiated water sample which was prepared by burning T2 to T2O and diluting it with H2O. A correction was made for the difference of vapor pressures of HTO and H2O. The effect of HTO adsorbed on chamber walls and electrodes was eliminated from the final result. Using Gerbes data on the number of electron volts to produce an ion pair in air, agreement obtained between the measured sourc… more
Date: July 23, 1953
Creator: Myers, I. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Progress Report : Low Geometry Alpha Particle Ionization Chambers

Description: ABSTRACT. When solutions of high specific alpha activity are to be assayed for product, it is often difficult to obtain reproducible results by diluting the solution sufficiently to remove a small volume from which a sample can be prepared and counted at 52% geometry. In order to assay such a solution, most reproducible results have been obtained with minimum effort in sample preparation by making use of low geometry chambers. Two types of low geometry chambers are described: 1) The air-screen … more
Date: November 8, 1944
Creator: Borokowski, C. J.; East, J. K. & Flatau, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Portable Apparatus for the Determination of Tritium in Liquid Samples

Description: A glass vacuum manifold and ionization chamber are evacuated and filled to atmospheric pressure with hydrogen and tritium. The hydrogen and tritium are evolved by dropping liquid, urine or water, on calcium metal and dried by passing through a suitable freezing bath. The current produced by the beta activity due to tritium is measured with a vibrating reed electrometer. The method has a precision of +3 per cent between the ranges of 100 and 1500 pc of tritium per liter. From O to 100 pc of trit… more
Date: May 1954
Creator: McClelland, Jean
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Sensitive Particle Ionization Chamber for Neutron Detection

Description: Abstract. A particle ionization chamber of sensitivity sufficient to detect a source of one neutron per second has been used to measure the neutron yield from a thick target of sulfur upon bombardment with polonium alpha particles. The high-geometry boron trifluoride chamber used had an efficiency of 1.9 percent for fission neutrons. The neutron yield from a thick target of sulfur was measured by this instrument and found to be .0035 +- .0013 neutrons per million incident polonium alpha particl… more
Date: November 21, 1944
Creator: Sturm, William J. & Dabbs, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Progress Report: Development and Construction of Alpha-Counting Equipment

Description: Abstract: An ionization chamber for use in counting alpha particle activity from the air has been devised for counting samples collected with the electrostatic precipitator. The chamber is an adaptation of the breech-locking standard chamber, with a cylindrical high voltage electrode into which the collection foil is placed, and a coaxial rod as a collecting electrode. A geometrical efficiency of close to 50% is obtained.
Date: July 4, 1944
Creator: Borkowski, C. J.; Dandl, R. A.; East, J. K. & Firminhac, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Balanced Ionization Chamber for Differential Measurements of Gamma Rays

Description: "The purpose of the work was to develop a method of measuring very small differences in the half lives of gamma ray emitting radioactive substances. The apparatus was then used to try to detect a difference in the half lives of Be7 metal and BeO. The results of the measurements on the two different chemical forms of beryllium will be given" (p. 1).
Date: 1947
Creator: Wiegand, Clyde
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental Techniques, Volume 1, Part 2: Ionization Chambers and Counters

Description: From foreword: "Construction of some typical ionization detectors and their operation, with most developed at the Los Alamos Laboratory and a few at other projects connected with the development of the atomic bomb." This report includes chapters 8-16 and an appendix to the second part.
Date: 1947
Creator: Rossi, Bruno Benedetto & Staub, Hans Heinrich
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Micro-Ionisation Chamber for Roentgen and Radium Rays

Description: While the dosage for radium therapy has been advanced to a point where its practical and theoretical solution has been attained, the same is not true in the field of radium therapy. This article is based on the international r-unit (Stockholm 1928) which has provided roentgenologists a foundation on which to build.
Date: unknown
Creator: Stahel, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of Negative Ions With a Cycloidal Instrument

Description: "Dissociative attachment studies were made for the production of H/sup -/ and 0/sup -/ ions in the electron bombardment of water vapor with a cycloidal instrument to compare the results with previous data obtained with mass spectrometers and total ionization tubes. The peak heights were studied as a function of spectrometer operating conditions to obtain confidence in the present data with regard to the relative intensities. Graphical representations are included of the results along with a sch… more
Date: unknown
Creator: Lange, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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