Method to Generate a Large Number of Slow Positrons with a Modular Photon-Positron Converter
- 1 May 1991
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 30 (5B) , L936
- https://doi.org/10.1143/jjap.30.l936
Abstract
A simple method of producing an intense beam of slow positrons is proposed. X-rays radiating forward from a high Z target at the bombardment of pulsed e-beams penetrate many thin tungsten foil strips which are aligned parallel and assembled into a stack of modules with grids on one side. Stepwise electric potentials applied between the neighbouring modules produce the grid focussing field for collecting slow positrons emerging from the strip surfaces. The total wide surface area and the effective collection realize a high production rate of slow positrons above 1014 s-1 during the pulse of a 35 MeV, 0.5 A LINAC.Keywords
This publication has 9 references indexed in Scilit:
- Stretching of slow positron pulses generated with an electron linacApplied Physics A, 1990
- Positron Plasma in the LaboratoryPhysical Review Letters, 1989
- Production and use of low-energy, monoenergetic positron beams from electron LINACSApplied Physics A, 1987
- Observation of defects associated with the Cu/W(110) interface as studied with variable-energy positronsPhysical Review B, 1983
- Positron and positronium emission from tungsten (111)Physical Review B, 1983
- Low energy positrons from metal surfacesSurface and Interface Analysis, 1980
- Equations for a plasma consisting of matter and antimatterAstrophysics and Space Science, 1973
- Positron Lifetimes in MetalsPhysical Review B, 1967
- Focusing in Linear Ion AcceleratorsReview of Scientific Instruments, 1955