Angular anisoplanatism of a focused beam using beacons over horizontal path

2016 ◽  
Author(s):  
Wu-ming Wu ◽  
Yu Ning
Keyword(s):  
Horizontal Path ◽  
Focused Beam

Remote, Long-Pathlength Cell for High-Sensitivity Raman Spectroscopy

1987 ◽  
Vol 41 (1) ◽  
pp. 126-130 ◽  
Author(s):  
Scott D. Schwab ◽  
Richard L. McCreery
Keyword(s):  
Fiber Optics ◽  
Laser Light ◽  
Capillary Tube ◽  
High Sensitivity ◽  
Sample Tube ◽  
Increased Sensitivity ◽  
Sampling Systems ◽  
Power Densities ◽  
Objective Being ◽  
Focused Beam

Fiber optics were used to interface a Raman spectrometer to a long (1 m) sample tube, with the objective being increased sensitivity. Internal reflection of the laser light and the Raman scatter within the sample tube permitted a long solution length to be sampled, increasing the Raman sensitivity by factors of 30–50 over conventional capillary tube sampling systems. In addition, the sample was subjected to much lower power densities than with systems employing a focused beam, thus minimizing radiation damage. Detection limits of 10−9 to 10−8 M were achieved for resonance Raman scatterers, and normal Raman scatterers could be detected at the 1 × 10−5 M level.

A model for focused-beam microwave heating on rock fracturing

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Hongwen Yu ◽  
Yuanhui Li ◽  
Guanglei Cui ◽  
Derek Elsworth ◽  
Jianpo Liu ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Rock Fracturing ◽  
Focused Beam

Interpretation of Focused Beam Reflectance Measurement (FBRM) Data via Simulated Crystallization

2008 ◽  
Vol 12 (4) ◽  
pp. 646-654 ◽  
Author(s):  
Zai Qun Yu ◽  
Pui Shan Chow ◽  
Reginald B. H. Tan
Keyword(s):  
Reflectance Measurement ◽  
Focused Beam

Characterization of the Asphaltene Onset Region by Focused-Beam Laser Reflectance: A Tool for Additives Screening†

2009 ◽  
Vol 23 (3) ◽  
pp. 1155-1161 ◽  
Author(s):  
Javier Marugán ◽  
José A. Calles ◽  
Javier Dufour ◽  
Raúl Giménez-Aguirre ◽  
José Luis Peña ◽  
...  
Keyword(s):  
Beam Laser ◽  
Laser Reflectance ◽  
Focused Beam
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