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Atomic field Bremsstrahlung for electron energy 50 to 100 keV for Z from 6 to 92

Thesis/Dissertation ·
OSTI ID:6595107
The absolute doubly differential cross sections, differential in photon emission angle and energy, were measured for 50, 75, and 100 keV incident electrons, for target elements C, Al, Cu, Y, Ag, Te, Tb, Au, Bi, and U for photons radiated at 90/sup 0/. Comparisons are made with the numerical calculations of Tseng and Pratt. As the absolute cross section measurements had an uncertainty of 22%, due mainly to a 20% uncertainty in target thickness, the relative cross sections are measured to test the photon energy dependent shape of the bremsstrahlung spectrum with an accuracy of 3%. The comparison between theory and experiment was also made at a forward photon emission angle of 0/sup 0/ for 100 keV incident electrons for the target elements Cu, Y, Ag, Te, Tb, Au, and U by the measurement of absolute cross sections. It is concluded that Pratt's theory is generally adequate to explain the bremsstrahlung process in this range of electron energies and atomic numbers, even through a few discrepancies were also noted. An improved method of measuring the efficiency of the solid state detector was developed by using bremsstrahlung. This method gives the efficiency curve for the entire range of energy under study.
Research Organization:
Texas Christian Univ., Fort Worth (USA)
OSTI ID:
6595107
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ACTINIDES
ALUMINIUM
BISMUTH
BREMSSTRAHLUNG
CARBON
COLLISIONS
COMPARATIVE EVALUATIONS
COPPER
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELEMENTS
EMISSION
ENERGY RANGE
EXPERIMENTAL DATA
GOLD
INFORMATION
KEV RANGE
KEV RANGE 10-100
METALS
NONMETALS
NUMERICAL DATA
PHOTON EMISSION
RADIATIONS
RARE EARTHS
SEMIMETALS
SILVER
TELLURIUM
TERBIUM
THEORETICAL DATA
TRANSITION ELEMENTS
URANIUM
YTTRIUM