Application of digital signal processing in nuclear spectroscopy (original) (raw)

Abstract

Digital signal processing algorithms for nuclear particle spectroscopy are described along with a digital pile-up elimination method applicable to equidistantly sampled detector signals pre-processed by a charge-sensitive preamplifier. The signal processing algorithms provided as recursive one-or multi-step procedures which can be easily programmed using modern computer programming languages. The influence of the number of bits of the sampling analogue-to-digital converter to the final signal-to-noise ratio of the spectrometer considered. Algorithms for a digital shaping-filter amplifier, for a digital pile-up elimination scheme and for ballistic deficit correction were investigated using a high purity germanium detector. The pile-up elimination method was originally developed for fission fragment spectroscopy using a Frisch-grid back-to-back double ionisation chamber and was mainly intended for pile-up elimination in case of high alpha-radioactivity of the fissile target. The developed pile-up elimination method affects only the electronic noise generated by the preamplifier. Therefore, the influence of the pile-up elimination scheme on the final resolution of the spectrometer investigated in terms of the distance between piled-up pulses. The efficiency of developed algorithms compared with other signal processing schemes published in literature.

Loading...

Loading Preview

Sorry, preview is currently unavailable. You can download the paper by clicking the button above.

References (9)

  1. Georgiev A., Gast W. // IEEE Trans. Nucl. Science. - 1993. -Vol. 40. P. 773 -779.
  2. Paula A. et al. // Nucl. Instr. and Meth. -2000. - Vol. A439. -P. 378 -384.
  3. Bardelli L. et al. // Nucl. Instr. and Meth. -2006. - Vol. A560. -P. 517 -523.
  4. Kihm T. et al. // Nucl. Instr. and Meth. -2003. - Vol. A498. -P. 334 -339.
  5. Kalinin A.I. et al. // Instr. and Meth. -2055. - Vol. A538. -P. 718 -722.
  6. TekVisa Connectivity Software// V3.0.2 build 33, www.tektronix.com
  7. Max J. Méthodes et techniques de traitement du signal et applications aux mesures physiques. Troisième Edition, MASSON, 1981
  8. Radeka V. // IEEE Trans. Nucl. Science. -1968. - Vol. 15. -P. 455 -470.
  9. Khriachkov V.A. et al. // Nucl. Instr. and Meth. -2000. -Vol. A444. -P. 614 -621.