skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Title: Selective Reduction of Niobium(V) Species to Promote Molecular Niobium/Tantalum Separation
Award ID(s):
1925708
PAR ID:
10354576
Author(s) / Creator(s):
; ; ; ; ; ; ;
Date Published:
Journal Name:
Inorganic Chemistry
Volume:
61
Issue:
1
ISSN:
0020-1669
Page Range / eLocation ID:
23 to 27
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. A niobium laser multicharged ion source was developed using laser ablation with 10-ns, 1064-nm pulses and a laser fluence of 10–83 Jcm-2. Three distinct groups of Nb ions were detected: ultrafast, fast, and thermal. The ions were accelerated and allowed to drift in a transport line containing an electrostatic ion energy analyzer, a retarding field analyzer, and a Faraday cup. Analysis of the ion energy and charge (z) showed that each group of ions experienced different acceleration potentials during plasma expansion. Time-of-flight (TOF) signal of the thermal ions showed overlap of the signals from Nb1+ and Nb2+. For the fast ion group, z up to Nb7+ was observed and the ion acceleration potential during plasma expansion increased with z, over the charge states from Nb1+ to Nb7+. The TOF signal indicated that the ultrafast ions were composed of higher-charge ions. 
    more » « less