Deep defect density imaging

Contour and surface plots of S and T parameters were generated for a 2D slice of four 304L steel specimens inserted in a 5 cm × 5 cm plastic holder. This was achieved by performing Doppler broadening spectroscopy (DOBS) coupled with in situ pair-production using a 1 kHz repetition rate linear accele...

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Veröffentlicht in:	Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2010-09, Vol.268 (17), p.2835-2839
Hauptverfasser:	Makarashvili, V., Wells, D.P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Austenitic stainless steels Defect imaging Density Doppler Doppler broadening spectroscopy Doppler effect Imaging Positron Annihilation Spectroscopy Shape Steels Two dimensional
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Contour and surface plots of S and T parameters were generated for a 2D slice of four 304L steel specimens inserted in a 5 cm × 5 cm plastic holder. This was achieved by performing Doppler broadening spectroscopy (DOBS) coupled with in situ pair-production using a 1 kHz repetition rate linear accelerator (LINAC) at the physics department of Idaho State University. The results confirmed the imaging potential of this technique and also revealed its limitations.
ISSN:	0168-583X 1872-9584
DOI:	10.1016/j.nimb.2010.06.039