SHAPE OF THE HIGH-ENERGY END OF THE ELECTRON-BREMSSTRAHLUNG SPECTRUM

Journal Article · Sat Feb 01 04:00:00 EST 1958 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.109.630· OSTI ID:4331817

Fuller, E G; Hayward, E; Koch, H W

The elastic scattering of photons by the 15.11-Mev level in C/sup 12/ has been used to study with good energy resolution the number of photons at the high-energy end of a bremsstrahlung spectrum. The bremsstrahlung was produced by electrons accclerated in a betatron, the energy of which was varied in 35-kev increments. Targets were: a 0.025inch-diameter tungsten wire and the following foils, 0.001and 0.010-inch tungsten, 0.002-inch thorium and 0.010-inch nickel. The foils were used to study the dependence of the spectrum shape upon target thickness and atomic number. When compared with Bethe-Heitler spectra corrected for target thicknesses, the data indicate an excess number of photons in the tip of the spectrum. The experimental number depends on the atomic number of the target and cannot vary more rapidly than Z/sup 1/2/. (auth)

• Research Organization: National Bureau of Standards, Washington
• NSA Number: NSA-12-006265
• OSTI ID: 4331817
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 109; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATOMS
BETATRONS
BREMSSTRAHLUNG
CARBON 12
ELECTRIC CHARGES
ELECTRONS
ENERGY LEVELS
FOILS
NICKEL
PHOTONS
PHYSICS
RESOLUTION
SCATTERING
SPECTRA
TARGETS
THICKNESS
THORIUM
TUNGSTEN
WIRES