Radiation from channeled electrons and positrons
Channeling radiation is generally described as arising from radiative transitions between bound states in a continuum potential. The concept of the continuum potential is used in connection with the channeling (directed motion) of heavy, positively charged particles penetrating crystals along a low-index axial or planar direction. If a positively charged particle is injected into a crystal at a small angle with respect to an atomic row (a crystal axis), it will undergo a set of small-angle correlated collisions which steer the particle away from the row. The potential experienced by such particles is described by that of a continuous charge distribution made up from the atomic potentials in the row. The various kinds of channeling radiation which have been observed are outlined and some examples of each type are given. The experiments discussed come from two institutions: the work from about 10-100 MeV was carried out at Lawrence Livermore National Laboratory and the work at 4 MeV was done at Aarhus University, Denmark. 17 refs., 9 figs., 3 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA); George Washington Univ., Washington, DC (USA). Dept. of Physics; Stanford Univ., CA (USA). Dept. of Electrical Engineering
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 7010694
- Report Number(s):
- CONF-860993-1; ON: DE87001687
- Resource Relation:
- Conference: SPIG '86: international symposium and summer school on the physics of ionized gases, Sibenik, Yugoslavia, 1 Sep 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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ELECTRON CHANNELING
GAMMA RADIATION
POSITRON CHANNELING
DIAMONDS
ENERGY LEVELS
EXPERIMENTAL DATA
GAMMA SPECTRA
POTENTIALS
SILICON
CARBON
CHANNELING
DATA
ELECTROMAGNETIC RADIATION
ELEMENTAL MINERALS
ELEMENTS
INFORMATION
IONIZING RADIATIONS
MINERALS
NONMETALS
NUMERICAL DATA
RADIATIONS
SEMIMETALS
SPECTRA
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena