Digital characterization of recoil charged-particle tracks for neutron measurements
We are developing a new optical ionization detector for imaging the track of a charged neutron-recoil particle in a gas. Electrons produced in the path of the recoil particle are excited by an external, high-voltage, RF, electric field of short duration. Their oscillatory motion causes ionization and excitation of nearby gas molecules, which then emit light in subsequent de-excitation. Two digital cameras image the optical radiation across two perpendicular planes and analyze it for the numbers of electrons in various volume elements along the track. These numbers constitute the digital characterization of the track. This information can then be used to infer the energy deposited in the track and the track LET in the gas. We have now observed alpha-particle tracks in a chamber utilizing these principles. The application of such a device for neutron dosimetry and neutron spectrometry will be described. 4 refs., 3 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Pellissippi International, Knoxville, TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6705655
- Report Number(s):
- CONF-881151-26; ON: DE89002210
- Resource Relation:
- Conference: International conference on the application of accelerators in research and industry, Denton, TX, USA, 7 Nov 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
61 RADIATION PROTECTION AND DOSIMETRY
PARTICLE TRACKS
IMAGE PROCESSING
CAMERAS
CHARGED PARTICLES
DIGITAL SYSTEMS
IMAGE CONVERTERS
MEASURING INSTRUMENTS
NEUTRON DOSIMETRY
NEUTRON SPECTROSCOPY
RECOILS
DOSIMETRY
IMAGE TUBES
PROCESSING
SPECTROSCOPY
440102* - Radiation Instrumentation- Radiation Dosemeters
655000 - Medical Physics