Laser-induced breakdown spectroscopy (LIBS) for coins analysis
Eleven coins, originating from different countries and spanning a chronological range of over one hundred years, were studied. The primary objective of the study is to demonstrate the
Chemical Analysis of 1794 & 1795 U. S. Silver Coins Phase 1 Data
o an independent laboratory for ICP-AES analysis. See Table 5. The 1794 O-105 Half Do alf Dollars in Table 5 are arranged by emission order sequence. Also note that Table 5 includes the results for the
Chronological discrimination of silver coins based on inter‐elemental
This paper details the application of a statistical method for the chronological discrimination of silver coins using counts per second trace elemental, inter-elemental ratios.
Silver/oxygen depth profile in coins by using laser ablation, mass
Physical analysis of ancient silver coins, based on measurements of bulk composition and elemental content of thin layer of tarnish, represents an important aspect of innovative archaeological
How X-Ray Technology Helps Authenticate Coins: PCGS
Experts at PCGS use a variety of technical methods when identifying and authenticating coins. One essential and often revealing examination is X-ray fluorescence spectroscopy (XRF), a
(PDF) Silver/oxygen depth profile in coins by using laser ablation
Silver coins belonging to different historical periods were investigated to determine the Ag/O atomic ratio depth profiles. Laser ablation has been employed to remove, in high vacuum, the first superficial
Chronological discrimination of silver coins based on
This paper details the application of a statistical method for the chronological discrimination of silver coins using counts per second trace
Gold, Silver and Platinum Analysis | Bruker
Businesses involving buying, selling or processing refined gold, silver or platinum, find Bruker''s fast and accurate testing tools help run an efficient and profitable operation. Bruker''s precious metals testers
From the PCGS Grading Room: How X-Ray Technology Helps Authenticate Coins
PCGS experts use a variety of technical methods when identifying and authenticating coins. One essential and often revealing examination is X-ray fluorescence spectroscopy (“XRF”), a
Benefits of XRF in Numismatic Assessment
X-ray fluorescence (XRF) analyzers provide a fast, accurate, and most importantly, nondestructive alternative for assessing the metal composition of coins, and are currently used by numismatic
From the PCGS Grading Room: How X-Ray Technology
PCGS experts use a variety of technical methods when identifying and authenticating coins. One essential and often revealing examination is X-ray
Optical Power Meters & Sources
High-precision power meters (Ge/InGaAs) and stabilized light sources for insertion loss and return loss testing.
OTDR & Fiber Characterization
Full-featured OTDR, fiber OTDR testers, and modular OTDR test modules for network deployment and troubleshooting.
OSA & Eye Diagram Analyzer
High-resolution OSA for DWDM and eye diagram testers for signal integrity validation.
BERT & Endface Inspection
BERT up to 800G, fiber endface inspection probes, and extinction ratio meters for comprehensive testing.