Title :
Effect of ns pulsed X-ray irradiation on biological media
Author :
Khacef, A. ; Viladrosa, R. ; Pouvesle, J.M.
Author_Institution :
GREMI-Polytech. Orleans, France
Abstract :
Summary form only given. In this paper, bacteria of public-health concern (Escherichia coli and Yersinia enterocolitica) were subjected to low dose (<0.08 kGy), high frequency nanosecond pulsed X-ray irradiation treatment. Results related to X-ray source development and biological treatment are presented. The X-ray source we developed is a powerful, compact and repetitive flash X-ray system based on high voltage transformer technology powered by ceramic capacitors in a Blumlein-like configuration. The X-ray pulse widths (FWHM) were about 30 ns and the maximum repetition rate was about 100 Hz. Diode operation is possible in air or in other gases at pressures varying from 10/sup -3/ mbar for xenon to about 1 mbar for helium. Depending of the application field (industrial, medical or biotechnological), X-ray characteristics (energy, pulse width, dose) could be optimized.
Keywords :
biological effects of X-rays; biomedical equipment; biotechnology; cellular effects of radiation; microorganisms; plasma X-ray sources; plasma applications; 1 mbar; 10/sup -3/ mbar; 100 Hz; 30 ns; Blumlein-like configuration; Escherichia coli; FWHM; X-ray pulse widths; X-ray source; Yersinia enterocolitica; bacteria; biological media; biological treatment; biotechnological application; ceramic capacitors; diode operation; flash X-ray system; high voltage transformer technology; medical application; nanosecond pulsed X-ray irradiation treatment; public-health concern; Capacitors; Ceramics; Diodes; Frequency; Gases; Microorganisms; Nanobioscience; Pulse transformers; Space vector pulse width modulation; Voltage transformers;
Conference_Titel :
Plasma Science, 2004. ICOPS 2004. IEEE Conference Record - Abstracts. The 31st IEEE International Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-8334-6
DOI :
10.1109/PLASMA.2004.1339786
