Optical imaging of charged particle tracks in a gas. Final report
Abstract
The development of a new detector designed to optically image the track of a charged particle in a gas is outlined. In the detector, a pulsed high-voltage (up to {approx} 30--40 kV), high-frequency (f = 27.125 MHz) RF field is temporarily applied (pulse duration {approx} 1--3 {mu}s) across a pair of electrodes, immediately following, or alternatively, just prior to the passage of a charged particle through the chamber. The pulsed RF field excites the subexcitation electrons left along the particle`s path leading to excitation and ionization of the surrounding gas and the emission of light. The track is then imaged by a fast intensified digital camera (shutter speed {approx} 0.1--5 {mu}s). The image is recorded in a two-dimensional pixel array (512 {times} 512 pixels) within the camera, and transferred to a computer for later analysis. The detector has been operated over the total gas pressure range 2.5--100 kPa (20--750 torr) using a gas mixture of 2--10% N2 in Ar. Images of both {alpha} and {beta} tracks obtained with this detector are discussed to demonstrate the usefulness of the present technique in charged-particle track analysis for dosimetry and microdosimetry applications.
- Authors:
-
- Oak Ridge National Lab., TN (United States)
- Pellissippi International, Inc., Oak Ridge, TN (United States)
- Consultec Scientific, Inc., Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 114038
- Report Number(s):
- DOE/OR/21400-T496
ON: DE96000677; CRN: C/ORNL--90-0034; TRN: 95:023202
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: PBD: 28 Sep 1995
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 66 PHYSICS; ELECTRON MULTIPLIER DETECTORS; DESIGN; IONIZING RADIATIONS; DIGITAL SYSTEMS; RF SYSTEMS; ALPHA DETECTION; BETA DETECTION; ULTRAHIGH-SPEED PHOTOGRAPHY; PHOTOMULTIPLIERS; ENERGY DEPOSITION; PROGRESS REPORT
Citation Formats
Turner, J.E., Hamn, R.N., Hunter, S.R., Gibson, W.A., Hurst, G.S., and Wright, H.A. Optical imaging of charged particle tracks in a gas. Final report. United States: N. p., 1995.
Web. doi:10.2172/114038.
Turner, J.E., Hamn, R.N., Hunter, S.R., Gibson, W.A., Hurst, G.S., & Wright, H.A. Optical imaging of charged particle tracks in a gas. Final report. United States. doi:10.2172/114038.
Turner, J.E., Hamn, R.N., Hunter, S.R., Gibson, W.A., Hurst, G.S., and Wright, H.A. Thu .
"Optical imaging of charged particle tracks in a gas. Final report". United States.
doi:10.2172/114038. https://www.osti.gov/servlets/purl/114038.
@article{osti_114038,
title = {Optical imaging of charged particle tracks in a gas. Final report},
author = {Turner, J.E. and Hamn, R.N. and Hunter, S.R. and Gibson, W.A. and Hurst, G.S. and Wright, H.A.},
abstractNote = {The development of a new detector designed to optically image the track of a charged particle in a gas is outlined. In the detector, a pulsed high-voltage (up to {approx} 30--40 kV), high-frequency (f = 27.125 MHz) RF field is temporarily applied (pulse duration {approx} 1--3 {mu}s) across a pair of electrodes, immediately following, or alternatively, just prior to the passage of a charged particle through the chamber. The pulsed RF field excites the subexcitation electrons left along the particle`s path leading to excitation and ionization of the surrounding gas and the emission of light. The track is then imaged by a fast intensified digital camera (shutter speed {approx} 0.1--5 {mu}s). The image is recorded in a two-dimensional pixel array (512 {times} 512 pixels) within the camera, and transferred to a computer for later analysis. The detector has been operated over the total gas pressure range 2.5--100 kPa (20--750 torr) using a gas mixture of 2--10% N2 in Ar. Images of both {alpha} and {beta} tracks obtained with this detector are discussed to demonstrate the usefulness of the present technique in charged-particle track analysis for dosimetry and microdosimetry applications.},
doi = {10.2172/114038},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Sep 28 00:00:00 EDT 1995},
month = {Thu Sep 28 00:00:00 EDT 1995}
}