Published October 1982 | Version v1
Journal article Metadata-only

Alpha particle collimator for micron-sized beam

Creators

  • 1. Department of Electrical Engineering and Computer Sciences and the Electronics Research Laboratory, University of California, Berkeley, California 94720

Description

A collimated alpha source is constructed from a drawn glass microcapillary and a plated polonium wire source. The shape of the capillary is approximately Gaussian, allowing an analytical model for the collimated flux intensity. The very gradual taper results in a nearly monochromatic beam. Two models are presented characterizing the particle flux intensity and its profile on a surface below the collimator tip. These models are experimentally verified using spectroscopy and isolated node mapping. Collimators having tip radii ranging from 5 to 25 μ have been successfully drawn and tested

Additional details

Publishing Information

Journal Title
Rev. Sci. Instrum.
Journal Volume
53
Journal Issue
10
Series
Rev. Sci. Instrum.
Journal Page Range
1581-1585
ISSN
0034-6748

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
14734482
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ALPHA BEAMS; ALPHA PARTICLES; ALPHA SOURCES; BEAM PROFILES; CAPILLARIES; COLLIMATORS; EXPERIMENTAL DATA; GLASS; MATHEMATICAL MODELS; MONOCHROMATORS; POLONIUM; SHAPE; SIZE; SPECTROSCOPY; WIRES
Descriptors DEC
BEAMS; BLOOD VESSELS; BODY; CARDIOVASCULAR SYSTEM; CHARGED PARTICLES; DATA; ELEMENTS; HELIUM IONS; HELIUM 4 BEAMS; INFORMATION; ION BEAMS; ION SOURCES; IONS; METALS; NUMERICAL DATA; ORGANS; PARTICLE SOURCES; RADIATION SOURCES