Thumbnail
Access Restriction
Open

Author Emma, V. ♦ Milone, C. ♦ Rubbino, A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ALPHA PARTICLES ♦ ANGULAR DISTRIBUTION ♦ BREMSSTRAHLUNG ♦ CARBON 11 ♦ CARBON 12 ♦ ENERGY ♦ ENERGY LEVELS ♦ GAMMA RADIATION ♦ INDEPENDENT PARTICLE MODEL ♦ IRRADIATION ♦ MEASURED VALUES ♦ MEV RANGE ♦ MOMENTUM ♦ NEUTRONS ♦ NUCLEAR MODELS ♦ NUCLEAR THEORY ♦ ORBITS ♦ PHOTONEUTRONS ♦ PHOTONS ♦ PHOTOPRODUCTION ♦ PROTONS ♦ SPECTRA
Abstract Energy spectra and angular distribution of photoneutrons from carbon are studied by irradiation with a 30-Mev bremsstrahlung beam. The spectra exhibit a fine structure from which the following levels in C/sup 12/ may be distinguished: these coincide with levels found in the C/sup 12/( gamma ,p) and C/sup 12/( gamma ,3 alpha ) reactions. Photoneutron emission occurs predominantly by transition to the ground state of C/sup 11/. The angular distribution is of the form 1 + 1.5 sin/sup 2/ theta for all neutrons having energy E/sub n/> 3 Mev. This distribution agrees with that expected according to Wilkinson's independent- particle model for ejection from the 1 = 1 orbit. (auth)
ISSN 0031899X
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-06-01
Publisher Department Universita, Catania, Italy ♦ Centro Siciliano di Fisica Nucleare, Catania, Italy
Journal Physical Review
Volume Number 118
Organization Universita, Catania, Italy ♦ Centro Siciliano di Fisica Nucleare, Catania, Italy


Open content in new tab

   Open content in new tab