Subsequently, intensities were measured in 15 magnet cycles.
For the example to the right, offset values for Centering the secondary ion image in the center of the field aperture (FA) is necessary for each new analysis spot because primary beam paths and conditions of secondary ion extraction vary over the area of the sample surface,in particular when spot-to-spot movements over large distances (few mm) are required.
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co.
First, you must have a chode to complete the Jumbo Shrimp approximately an 8" circumference.
Magmatic zircon in high-grade metamorphic rocks is often characterized by complex textures as revealed by cathodoluminenscence (CL) that result from multiple episodes of recrystallization, overgrowth, Pb-loss and modifications through fluid-induced disturbances of the crystal structure and the original U-Th-Pb isotopic systematics.
Many of these features can be recognized in 2-dimensional CL images, and isotopic analysis of such domains using a high resolution ion-microprobe with only shallow penetration of the zircon surface may be able to reconstruct much of the magmatic and complex post-magmatic history of such grains.