4 documents found, page 1 of 1
A Monte Carlo study of the electron clouds produced by polarized x-rays in xenon
Botte, G. S.; Rachinhas, P. J. B. M.; Dias, T. H. V. T.; Santos, F. P.; Távora, L. M. N.; Silva, R. M. Curado da; Conde, C. A. N.; Stauffer, A. D.Information about the polarization of x-ray photons can be determined by probing the direction of emission of photoelectrons and the profile of the electron cloud produced in the detecting medium. In this work we present Monte Carlo results for the electron clouds produced in xenon by the absorption of x-rays, considering a simple non-relativistic dipole approach to the angular differential photoionization cros...
Simulation and experimental results for the detection of conversion electrons w...
Rachinhas, P. J. B. M.; Simões, P. C. P. S.; Lopes, J. A. M.; Dias, T. H. V. T.; Morgado, R. E.; Santos, J. M. F. dos; Stauffer, A. D.; Conde, C. A. N.The application of gas proportional scintillation counters (GPSC) to the detection and identification of conversion electrons in the medium energy range is investigated. Experimental and Monte Carlo results are presented for the response of a xenon GPSC, filled at atmospheric pressure, to the decay of a 109Cd source. This source emits 88.0 keV [gamma]-rays, eL=84.6 keV and eK=62.5 keV conversion electrons, as w...
Energy resolution of xenon proportional counters: Monte Carlo simulation and ex...
Rachinhas, P. J. B. M.; Dias, T. H. V. T.; Stauffer, A. D.; Santos, F. P.; Conde, C. A. N.The gas multiplication factor M and energy resolution R of xenon gas cylindrical proportional counters are investigated experimentally and calculated theoretically using a Monte Carlo technique to simulate the growth of single-electron-initiated avalanches. A good agreement is found between calculated and experimental data. The experimental and the calculated results are presented as a function of the reduced v...
Unidimensional Monte Carlo Simulation of the Secondary Scintillation of Xenon
Dias, Teresa H. V. T.; Stauffer, A. D.; Conde, C. A. N.An unidimensional Monte Carlo method is used to calculate the secondary scintillation (electroluminescence) intensity in xenon gas proportional scintillation counters. Other transport parameters like electron drift time, average number of collisions, efficiency for light production and induced charge pulse amplitude are also calculated. The values obtained agree well with the experimental data available