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NCJ Number: NCJ 000001     Find in a Library
Title: APPLICATIONS OF NEUTRON ACTIVATION ANALYSIS IN SCIENTIFIC CRIME INVESTIGATION - ANNUAL REPORT, JUNE 1, 1968-MAY 31, 1969
Author(s): V P GUINN ; R P HACKLEMAN
Corporate Author: Gulf General Atomic
United States of America
Date Published: 1970
Page Count: 94
Sponsoring Agency: US Atomic Energy Cmssn
United States of America
Grant Number: AT(04-3)-167
Publication Number: GA-9822; TID-4500
Sale Source: National Technical Information Service
US Dept of Commerce
5285 Port Royal Road
Springfield, VA 22151
United States of America

National Institute of Justice/
NCJRS paper reproduction
Box 6000, Dept F
Rockville, MD 20849
United States of America
Document: PDF 
Language: English
Country: United States of America
Annotation: TEST FIRINGS OF REVOLVERS AND AUTOMATIC PISTOLS AND PARAFFIN HAND SAMPLINGS AND NEUTRON ACTIVATION ANALYSES WERE MADE.
Abstract: FORENSIC ACTIVATION ANALYSIS RESEARCH CONDUCTED AT GULF GENERAL ATOMIC, UNDER A CONTRACT WITH THE DIVISION OF ISOTOPE DEVELOPMENT, US ATOMIC ENERGY COMMISSION, IS DESCRIBED. A LARGE NUMBER OF TEST FIRINGS OF REVOLVERS AND AUTOMATIC PISTOLS WAS PERFORMED, FOLLOWED BY HAND SAMPLING WITH PARAFFIN AND NEUTRON ACTIVATION ANALYSIS (NAA) OF THE PARAFFIN HANDLIFTS FOR BARIUM AND ANTIMONY. ALSO, OCCUPATIONAL 'HANDBLANK' SAMPLES WERE OBTAINED BY THE SAME PROCEDURE FROM PERSONS OF A NUMBER OF ADDITIONAL OCCUPATIONS-AND SIMILARLY ANALYZED FOR BARIUM AND ANTIMONY. A BIVARIATE NORMAL STATISTICAL TREATMENT METHOD WAS DEVELOPED FOR THE INTERPRETATION OF THE ACCUMULATED GUNSHOT-RESIDUE AND HANDBLANK DATA. AS APPLIED TO THE DATA OBTAINED THUS FAR, IT IS A PROMISING METHOD. AN ANALOGOUS MULTIVARIATE NORMAL STATISTICAL TREATMENT METHOD WAS INVESTIGATED FOR TREATMENT OF THE MORE THAN TWO VARIABLES OBSERVED IN NAA DATA ON PAINT, PAPER, AND BULLET LEAD.
Index Term(s): Spectroscopy ; Neutron activation analysis ; Trace evidence ; Gunshot residue
   
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https://www.ncjrs.gov/App/Publications/abstract.aspx?ID=1

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