RADIOLOGICAL PHYSICS DIVISION SEMIANNUAL REPORT FOR JULY THROUGH DECEMBER 1959
An investigation of the emission spectrum from radiation-daniaged xylene led to the conclusion that no gross corrections are needed for xylene when used as a scintillation solvent. Data are included from measurements of nonradioactive energy transfer in p-xylene and diphenyloxazole organic scintillation solutions. Measurements were made of the energy resolution of a twinscintillation fast neutron spectrometer. Accurate values of electron drift velocity in purified noble gases and nitrogen were obtained by measuring the transit time of photoelectrons across the gap of a parallel-plate condenser. Information concerning the transport collision cross section of low-energy electrons on noble gases was obtained from drift-velocity data. A method is discussed for the determination of traces of Freon-12 by positive ion emission techniques. Data are reported from late observations of the distribution of radium in the human body; the microscopic distribution of the dose in the skeleton arising from deposited calcium-45, strontium90, and radium-226 as measured autoradiographically; and determinations of individual alpha emitters in mixtures of alpha emitters. Data are tabulated from measurements of gross fission product radioactivity in air samples and in samples of soils collected from August through November 1959. The soil and air fall-out data are discussed. Measurements were made of the total-body gamma ray spectra of 13 unexposed employees chosen as typical of the civilian population of the Chicago area. Measurements were also made of cesium-137 content and cesium-l37/potassium-40 ratios. Data are included from measurements of natural uranium in the lungs of a human. The status is reviewed of a project to study the conditions of persons formerly engaged as radium dial painters and of a project to study the condition of persons who received radium by intravenous administration 21 to 29 years previously. Results are included from a survey of the radioactivity of commercial photomultiplier tubes. The activity induced in meat by high-energy electron bombardment was measured in connection with a study of radiation sterilization and preservation of foodstuffs. Research studies in the field of meteorology reported include descriptions of trial runs of the meteorological model towing tank, a study of errors in wind measurements associated with towermounted anemometers, and studies on the effect of con vective tarbulence in the atmosphere on the diffusion of stack gases. (For preceding period see ANL- 6049.) (C.H.)
- Research Organization:
- Argonne National Lab., Lemont, Ill.
- DOE Contract Number:
- W-31-109-ENG-38
- NSA Number:
- NSA-14-016491
- OSTI ID:
- 4164144
- Report Number(s):
- ANL-6104
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- United States
- Language:
- English
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AIR- CONTAMINATION- FALLOUT- FISSION PRODUCTS- MEASURED VALUES- NUCLEAR EXPLOSIONS- RADIOACTIVITY- - SAMPLING- SOILS- TABLES
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