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Title: Generation and dose distribution measurement of flash x-ray in KALI-5000 system

Abstract

Flash x-ray generation studies have been carried out in KALI-5000 Pulse power system. The intense relativistic electron beam has been bombarded on a tantalum target at anode to produce flash x-ray via bremsstrahlung conversion. The typical electron beam parameter was 360 kV, 18 kA, and 100 ns, with a few hundreds of A/cm{sup 2} current density. The x-ray dose has been measured with calcium sulfate:dysposium (CaSO{sub 4}:Dy) thermoluminescent dosimeter and the axial dose distribution has been characterized. It has been observed that the on axis dose falls of with distance {approx}1/x{sup n}, where n varies from 1.8 to 1.85. A maximum on axis dose of 46 mrad has been measured at 1 m distance from the source. A plastic scintillator with optical fiber coupled to a photomultiplier tube has been developed to measure the x-ray pulse width. The typical x-ray pulse width varied from 50 to 80 ns.

Authors:
; ; ; ; ; ; ;  [1]
  1. Accelerator and Pulse Power Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India)
Publication Date:
OSTI Identifier:
21266446
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 79; Journal Issue: 10; Other Information: DOI: 10.1063/1.3005485; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BREMSSTRAHLUNG; CALCIUM SULFATES; CURRENT DENSITY; DOSIMETRY; DYSPROSIUM; ELECTRON BEAMS; PHOTOMULTIPLIERS; PLASTIC SCINTILLATORS; RADIATION DOSE DISTRIBUTIONS; RELATIVISTIC RANGE; SCINTILLATION COUNTERS; TANTALUM; THERMOLUMINESCENCE; THERMOLUMINESCENT DOSEMETERS; X RADIATION

Citation Formats

Menon, Rakhee, Roy, Amitava, Mitra, S., Sharma, A., Mondal, J., Mittal, K. C., Nagesh, K. V., and Chakravarthy, D. P.. Generation and dose distribution measurement of flash x-ray in KALI-5000 system. United States: N. p., 2008. Web. doi:10.1063/1.3005485.
Menon, Rakhee, Roy, Amitava, Mitra, S., Sharma, A., Mondal, J., Mittal, K. C., Nagesh, K. V., & Chakravarthy, D. P.. Generation and dose distribution measurement of flash x-ray in KALI-5000 system. United States. doi:10.1063/1.3005485.
Menon, Rakhee, Roy, Amitava, Mitra, S., Sharma, A., Mondal, J., Mittal, K. C., Nagesh, K. V., and Chakravarthy, D. P.. Wed . "Generation and dose distribution measurement of flash x-ray in KALI-5000 system". United States. doi:10.1063/1.3005485.
@article{osti_21266446,
title = {Generation and dose distribution measurement of flash x-ray in KALI-5000 system},
author = {Menon, Rakhee and Roy, Amitava and Mitra, S. and Sharma, A. and Mondal, J. and Mittal, K. C. and Nagesh, K. V. and Chakravarthy, D. P.},
abstractNote = {Flash x-ray generation studies have been carried out in KALI-5000 Pulse power system. The intense relativistic electron beam has been bombarded on a tantalum target at anode to produce flash x-ray via bremsstrahlung conversion. The typical electron beam parameter was 360 kV, 18 kA, and 100 ns, with a few hundreds of A/cm{sup 2} current density. The x-ray dose has been measured with calcium sulfate:dysposium (CaSO{sub 4}:Dy) thermoluminescent dosimeter and the axial dose distribution has been characterized. It has been observed that the on axis dose falls of with distance {approx}1/x{sup n}, where n varies from 1.8 to 1.85. A maximum on axis dose of 46 mrad has been measured at 1 m distance from the source. A plastic scintillator with optical fiber coupled to a photomultiplier tube has been developed to measure the x-ray pulse width. The typical x-ray pulse width varied from 50 to 80 ns.},
doi = {10.1063/1.3005485},
journal = {Review of Scientific Instruments},
number = 10,
volume = 79,
place = {United States},
year = {Wed Oct 15 00:00:00 EDT 2008},
month = {Wed Oct 15 00:00:00 EDT 2008}
}