Access
Resource Type
Collection
Serial/Series Title
Atomic Energy Commission Reports
170
University of California Radiation Laboratory Reports
65
Hanford Works Reports
53
HW (Series)
38
Oak Ridge National Laboratory Reports
31
Battelle Memorial Institute Reports
23
UCRL (Series)
23
BMI (Series)
20
Los Alamos National Laboratory Reports
19
AECU (Series)
14
46 More
Country
States
Month
Language
369 Matching Results
Results open in a new window/tab.
Medical and Health Physics Quarterly Report: May, June, July, 1953. Aerosol Studies.
Our aerosol program employing monkeys has been initiated. A plutonium oxilate solution was introduced into the trachea. Preliminary results of the fecal and urinary determinations appear here.
Date:
September 21, 1953
Creator:
Hamilton, J. G. & Wallace, Patricia
Object Type:
Report
System:
The UNT Digital Library
Medical and Health Physics Quarterly Report: April, May, June, 1953
Progress report on biological studies of radiation effects, metabolic properties of various materials, health chemistry, health physics.
Date:
September 21, 1953
Creator:
University of California Radiation Laboratory
Object Type:
Report
System:
The UNT Digital Library
Orbital Electron Capture in the Heaviest Elements
Certain isotopes in the region of the heaviest elements have been produced by cyclotron and pile bombardment techniques, and their nuclear decay properties have been investigated. The orbital electron capture decay of At210, At211, Np234, Np235, Pu234, Pu237, and Am242m has been studied and decay schemes have been proposed. In addition, the alpha spectra of Po211, At210, and At211 have been observed.
Date:
September 1953
Creator:
Hoff, Richard William
Object Type:
Report
System:
The UNT Digital Library
Passage of Electrons Through Matter
One of the oldest properties of electrons is their emission of x-rays (discrete and continuous spectra) when impinging on matter. Cloud-chamber tracks show light ionization, and considerable multiple scattering, except for fast electrons. Tracks are long and range indefinite.
Date:
September 9, 1953
Creator:
Vaughan, Edward
Object Type:
Report
System:
The UNT Digital Library
The Distributions in Energy and in Number of Electrons and Photons in Cascade: Derived With Energy-Dependent Bremsstrahlung, Materialization, Collision Loss and Multiple Scattering
Diffusion equations for a cascade shower which include an energy cutoff and energy parameters for each particle have not previously been studied. In this paper it is found that an inclusion of both permits collision loss to be represented as a discrete process by modifying the differential radiation cross section.
Date:
September 17, 1953
Creator:
Rankin, Bayard
Object Type:
Report
System:
The UNT Digital Library
A Criterion For Vacuum Sparking Designed to Include Both R. F. and D. C.
An empirical relation is presented which represents a boundary between no vacuum sparking and possible vacuum sparking. Metal electrodes and r.f. or d.c. voltages are used. The criterion fits several orders of surface gradient, voltage, gap, and frequency. Current due to field emission is considered necessary for sparking but in addition, energetic particles are required to initiate a cascade process which increases the field emission currents to the point of sparking. An elementary cascade process is outlined, but the data upon which it is based is not fully stated.
Date:
September 4, 1953
Creator:
Kilpatrick, W. D.
Object Type:
Report
System:
The UNT Digital Library
Dependence of Positive Pion Production Cross Sections on Atomic Number at Low Energies
A preliminary study of positive pion production from proton-nucleus collisions revealed that positive pion production cross sections agree more favorably with a Z 2/3 variation than with a variation proportional to the atomic number. A similar study on negative pion production has shown that negative pion yields from proton-nucleus collisions tend to vary in proportion to the number of neutrons in the nucleus. As a result an experiment was performed to investigate if there is a significant change in positive pion production with changing atomic number at two lower pion energies.
Date:
September 8, 1953
Creator:
Sagane, Ryokichi, 1905-1969 & Dudziak, Walter F.
Object Type:
Report
System:
The UNT Digital Library
Physics Division Quarterly Report - May, June, and July, 1952
Physics Division quarterly report - general physics research projects and accelerator operation and development.
Date:
September 16, 1952
Creator:
University of California Radiation Laboratory
Object Type:
Report
System:
The UNT Digital Library
Summary of the Research Progress Meeting of June 12, 1952
Summary of the research progress meeting of June 12, 1952
Date:
September 5, 1952
Creator:
Felden, Margaret Fess
Object Type:
Report
System:
The UNT Digital Library
The Cloverleaf Cyclotron Three Phase Radiofrequency System
The geometry of the magnetic pole structure in the cloverleaf cyclotron suggests the use of three dees excited by three phase rf placed in the valleys out of the way of the beam. Experience with the model machines indicates that it is desirable to be able to vary the phase angles between the three dee voltages through 30 or 40 degrees and to be able to maintain them at any given value within plus or minus one degree. It is desirable, also, to be able to vary the phase angle independently of the amplitude of the dee voltages. There are several possible ways of meeting these requirements. The one which was chosen appears to be the most flexible and to best meet the problems presented by the center geometry of the machine.
Date:
September 9, 1952
Creator:
Smith, Bob H.
Object Type:
Report
System:
The UNT Digital Library
Thermodynamic Properties Of Gaseous Metal Dihalides
The second and third law methods of thermodynamics are used to obtain the enthalpies of vaporization of the halides of Be, Mg, Ca, Sr, Ba, Zn, Cd, Hg, Sn, Pb, Ti, V, Cr, Mn, Fe, Co, Ni and Cu. Molecular and free energy data necessary for such calculations are presented. The structure of bonding in these molecules is briefly discussed.
Date:
September 1961
Creator:
Brewer, Leo, 1919-2005; Somayajulu, G. R. & Brackett, Elizabeth
Object Type:
Report
System:
The UNT Digital Library
Vibrational States Of The HD⁺ And HT⁺ Ions
The vibrational eigenvalues belonging to the ground electronic state of the HD<sup>+ and HT<sup>+ ions have been calculated. These calculations have been done for the J = 0 rotational state and neglecting the dynamic corrections to the potential. For the HD<sup>+ ion we find twenty-two bound states, and for the HT<sup>+ ion twenty three bound states.
Date:
September 29, 1960
Creator:
Cohen, Stanley; Hiskes, John R. & Ridell, Robert J., Jr.
Object Type:
Report
System:
The UNT Digital Library
The Statistical Geometry Of Bubble Tracks
An exact treatment of the structure of tracks in nuclear research emulsion recently was attempted with some success. Many of the proofs also appear to be generally valid for bubble tracks in Wilson chambers. This is a summary of the results that are applicable to tracks of charged particles in bubble chambers.
Date:
September 28, 1960
Creator:
Barkas, Walter H. (Walter Henry), 1912-1969
Object Type:
Report
System:
The UNT Digital Library
The Complete Bound Spectrum Of The Negative Hydrogen Ion
Ever since the existence of a bound state of Hydrogen was discovered, it has been uncertain whether any other bound states existed. In addition to its importance in astrophysics this question has also come up in discussions of the scattering of electrons from hydrogen. To settle this problem it is necessary to calculate lower bounds for the eigenvalues of the Schrodinger equation. A simple calculation has been carried out for the problem of the negative hydrogen ion.
Date:
September 1960
Creator:
Schwartz, Charles
Object Type:
Report
System:
The UNT Digital Library
Current Status Of Curium Inhalation Exposures In Humans
An incident is described concerning a curium accelerator target aerolized by explosion. Management of the spill, sampling, particle sizing, and medical findings are presented. Seven of the 27 persons present showed low levels of curium excretion. The data from this incident were compared with those from three other inhalation exposures to curium compounds at Lawrence Laboratory.
Date:
September 1960
Creator:
Parker, Howard G.; Thaxter, Myron D. & Biggs, Max W.
Object Type:
Report
System:
The UNT Digital Library
Energy Reception And Transfer In Photosynthesis
The basic information about the path of carbon in photosynthesis is reviewed, together with the methods that were used to discover it. This has led to the knowledge of what is required of the photochemical reaction in the form of chemical species. Attention is then directed to the structure of the photochemical apparatus itself insofar as it is viewable by electron microscopy, and some principles of ordered structure are devised for the types of molecules to be found in the chloroplasts. From the combination of these, a structure for the grana lamella is suggested and a mode of function proposed. Experimental test for this mode of function is underway; one method is to examine photoproduced unpaired electrons. This is discussed.
Date:
September 23, 1958
Creator:
Calvin, Melvin, 1911-1997
Object Type:
Report
System:
The UNT Digital Library
Radiobiological Studies On Yeast (Discussion)
This is an attempt to summarize and relate at least some of the material presented in four talks during a symposium on radiobiological studies on yeast, and in addition discuss some related experimental results. The discussion will be divided into two sections: I) a discussion of the various manifestations of radiation damage in yeast; and II) a consideration of modification of these damages by variations of physico-chemical and biological parameters.
Date:
September 1958
Creator:
Mortimer, Robert K.
Object Type:
Report
System:
The UNT Digital Library
Computer Information Center
The purpose of the Computer Information Center is to stimulate the production of documentation and to make it readily available to computer users within the Laboratory. In addition, the Center will endeavor to obtain all publications of programming and machine manuals pertinent to LRL.For the Computer Information Center to be effective, it is essential that its coverage be as complete as possible. Computer users who have written programs or subroutines are therefore urged to submit write-ups for publication to Chet McIntosh (Bldg. 161 - Room 1241) or Nora Kegel (Bldg. 161 - Room 1239). All materials presented will be edited and the final draft returned to the author for verification prior to publication within the Laboratory.
Date:
September 1963
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Future Program for the Cern PS and the Brookhaven AGS
The alternating-gradient proton synchrotrons at CERN and Brookhaven are very similar in size, design and in their experimental use. For this reason, collaboration between the groups at CERN and Brookhaven has been close throughout the history of these two machines. For the most part this has taken the form of exchanges of visits of individual machine designers and of high-energy physicists. By 1962, however, it appeared that the reciprocal flow of information was not adequate and a more formal meeting was arranged. This meeting took place at Brookhaven during the week of September 10, 1962. CERN sent a representative group of machine physicists and high-energy physicists. The meeting was attended also by observers from several American high-energy installations. The discussion covered a wide range of topics, from operating characteristics of the machines themselves to future trends in design of experimental equipment. Plans for beam ejection were presented, techniques were described for better use of secondary beams from internal targets, progress was summarized on dc and rf particle separators. and future trends in neutrino experimentation were predicted.
Date:
1962-09-10/1962-09-14
Creator:
Blewett, J. P.; Bittner, J. W.; Brown, H. N. & Maschke, A. W.
Object Type:
Report
System:
The UNT Digital Library
A Sublimation Pump
During a visit to Professor H.G. Harb at the University of Wisconsin, it was apparent that he had succeeded in obtaining fresh, clean chemisorptive layers of titanium by sublimation and chat that this could be adapted into an effective high vacuum pump. Two previous techniques of obtaining a chemisorptive layer of titanium, namely catholic sputtering and evaporation from the liquid droplet, have been extensively investigated and reported. Each of these seem to have inherent difficulties in stability and continuity of operation that appear to be eliminated or effectively reduced by the sublimation procedure. A development program was started at Brookhaven National Laboratory to investigate the possibilities of each sublimation of titanium as opposed to evaporation from the liquid.
Date:
September 20, 1962
Creator:
Gould, C. L. & Mandel, P.
Object Type:
Report
System:
The UNT Digital Library
Information for Application of Gamma Absorptometers for Chemical Processes
Fractional absorption of gamma photons from a source by uranium or plutonium in solution is measured to determine concentration of these elements.
Date:
September 1956
Creator:
Alkire, G. J.
Object Type:
Report
System:
The UNT Digital Library
Ultrasonic Testing With Lamb Waves
A method is described whereby many types of flaws lying close to the surface of a metal can be ultrasonically detected, regardless of the time duration of the interrogating pulses. Lamb waves are established in the metal between a flaw and the surface by an ultrasonic beam which impinges at the proper angle of incidence. A suitably positioned receiver transducer picks up the waves to reveal the flaw. In this method the usually troublesome surface echo is eliminated from the receiver by an acoustic barrier, making it well suited for routine and automatic testing. Results of applying the technique to several testing problems are discussed.
Date:
September 25, 1956
Creator:
Worlton, D. C.
Object Type:
Report
System:
The UNT Digital Library
Compaction of UO₂ by Swaging
This paper is a preliminary report of experiments being carried out on the compaction of UO₂ powders by swaging within a restraining tube. Various types of UO₂ have been tried with resulting apparent densities as great as 9.89 grams per cubic centimeter.
Date:
September 20, 1956
Creator:
Quinlan, F. B. & Roake, W. E.
Object Type:
Report
System:
The UNT Digital Library
The Creep of Zircaloy-2 Process Tubes
The creep problems associated with zircaloy-2 process tubes and the factors affecting the creep of these tubes were discussed in detail. Emphasis was placed on the determination of the tube wall thickness for an SPR tube, whose minimum thickness is limited by creep considerations. It was concluded that, at the present time, there is not enough information available to design zircaloy-2 process tubes on a realistic basis. Various experiments were suggested to supplement the creep rate testing program being pursued by Battelle Memorial Institute.
Date:
September 17, 1956
Creator:
Burgess, A. B.
Object Type:
Report
System:
The UNT Digital Library