skip navigation


Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.


NCJ Number: 183295 Find in a Library
Title: Applications of Focused Ion Beam Systems in Gunshot Residue Investigation
Journal: Journal of Forensic Sciences  Volume:44  Issue:1  Dated:January 1999  Pages:105-109
Author(s): Ludwig Niewohner Ph.D.; H. Walter Wenz Ph.D.
Date Published: January 1999
Page Count: 5
Type: Research (Applied/Empirical)
Format: Article
Language: English
Country: United States of America
Annotation: This research focused on the use of ion beam (FIB) systems for the analysis of gunshot residues (GSR) and concluded that the four types of 9 millimeter parabellum ammunition tested produced GSR particles with individual and unique interior morphologies.
Abstract: FIB allows the examiner to cut a preselected GSR particle to make it possible to view the core and determine interior morphology and character to use to identify the ammunition manufacturer. The researchers obtained the sample particles for each of the four ammunition types by exposing four separate, typical, collection stubs to the down-range environment of the 9 millimeter pistol. Scanning electron microscopy/EX analyzed representative particles elementally. Their locations were recorded for future examination by FIB. Some particles of all brands were solid on the inside; therefore, the interior morphology was not present in all the particles samples. However, the descriptions applied consistently and without exception to the particles from a particular manufacturer when morphology was present. Photographs and 7 references (Author abstract modified)
Main Term(s): Science and Technology
Index Term(s): Ammunition; Firearms identification; Gunshot residue; Scientific techniques; Trace evidence
To cite this abstract, use the following link:

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.