Cross sections for atomic displacements in solids by fast positrons
Conference
·
OSTI ID:5894973
The Mott series has been used to calculate the cross section for atomic displacements produced in elastic collisions between relativistic positrons and atomic nuclei. The Kinchin and Pease displacement model was used. Several elements spanning the atomic table were treated using positron energies ranging from threshold to several tens of MeV. The results are compared with previous calculations for relativistic electrons. It is found that for the same energy and atomic number the positron cross sections are always smaller (up to a factor of 5 or more). It is also found that the McKinley-Fesbach formula which is frequently used in radiation damage analysis is even less reliable for positrons than for electrons. 9 refs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5894973
- Report Number(s):
- CONF-8710159-1; ON: DE87014947
- 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
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
ENERGY TRANSFER
FERMIONS
FORMATION DAMAGE
KINETIC ENERGY
LEPTONS
MOTT SCATTERING
POSITRON COLLISIONS
POSITRON-ATOM COLLISIONS
POSITRONS
RADIATION EFFECTS
RELATIVISTIC RANGE
SCATTERING
SOLIDS
TOTAL CROSS SECTIONS
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
ENERGY TRANSFER
FERMIONS
FORMATION DAMAGE
KINETIC ENERGY
LEPTONS
MOTT SCATTERING
POSITRON COLLISIONS
POSITRON-ATOM COLLISIONS
POSITRONS
RADIATION EFFECTS
RELATIVISTIC RANGE
SCATTERING
SOLIDS
TOTAL CROSS SECTIONS