The use of unburned propellant powder for shooting-distance determination. Part I: Infrared luminescence

The use of unburned propellant powder for shooting-distance determination. Part I: Infrared... •Infrared luminescence inspection of gunshot residue is an easy and reliable method for the detection of propellant particles in target tissue for about 80–90% of ammunition types. The quantification of unburned propellant particle densities can be used to draw shooting distance curves. The curve slope strongly depends on the morphology of the propellant particles. Muzzle-to-target distances could be determined up to 1.5m for pistols and up to 3m for a revolver.•In cases of large particle density variation within the samples of identical shooting distances, the ratio of the amount of particles within the area around the bullet hole and within a ring with a defined distance from the bullet hole was calculated. These data resulted in measures with much lower standard deviations.•The described method can be applied as a supplementary method on the same samples before or after the Rhodizonate Test or the Chlorindazone Test. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Forensic Science International Elsevier

The use of unburned propellant powder for shooting-distance determination. Part I: Infrared luminescence

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
0379-0738
D.O.I.
10.1016/j.forsciint.2017.01.019
Publisher site
See Article on Publisher Site

Abstract

•Infrared luminescence inspection of gunshot residue is an easy and reliable method for the detection of propellant particles in target tissue for about 80–90% of ammunition types. The quantification of unburned propellant particle densities can be used to draw shooting distance curves. The curve slope strongly depends on the morphology of the propellant particles. Muzzle-to-target distances could be determined up to 1.5m for pistols and up to 3m for a revolver.•In cases of large particle density variation within the samples of identical shooting distances, the ratio of the amount of particles within the area around the bullet hole and within a ring with a defined distance from the bullet hole was calculated. These data resulted in measures with much lower standard deviations.•The described method can be applied as a supplementary method on the same samples before or after the Rhodizonate Test or the Chlorindazone Test.

Journal

Forensic Science InternationalElsevier

Published: Apr 1, 2017

References

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