Corrections for quantitative NO concentration measurements using time-resolved picosecond laser-induced fluorescence

2002 ◽  
Author(s):  
James Driscoll ◽  
V. Sick ◽  
R.L. Farrow ◽  
P.E. Schrader
Keyword(s):  
Picosecond Laser ◽  
Laser Induced Fluorescence ◽  
Time Resolved ◽  
Concentration Measurements

Flame Concentration Measurements Using Picosecond Time-Resolved Laser-Induced Fluorescence

1994 ◽  
Vol 97 (4-6) ◽  
pp. 391-403 ◽  
Author(s):  
M. S. KLASSEN ◽  
B.D. THOMPSON ◽  
T.A. REICHARDT ◽  
G.B. KING ◽  
N.M. LAURENDEAU
Keyword(s):  
Laser Induced Fluorescence ◽  
Time Resolved ◽  
Concentration Measurements

Root Cause Analysis Techniques Using Picosecond Time Resolved LADA

2014 ◽  
Author(s):  
Dan Bodoh ◽  
Kent Erington ◽  
Kris Dickson ◽  
George Lange ◽  
Carey Wu ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Picosecond Laser ◽  
Root Cause Analysis ◽  
Fault Isolation ◽  
Time Resolved ◽  
Cause Analysis ◽  
Root Cause ◽  
Design And Manufacturing ◽  
Multiple Interactions ◽  
Established Technique

Abstract Laser-assisted device alteration (LADA) is an established technique used to identify critical speed paths in integrated circuits. LADA can reveal the physical location of a speed path, but not the timing of the speed path. This paper describes the root cause analysis benefits of 1064nm time resolved LADA (TR-LADA) with a picosecond laser. It shows several examples of how picosecond TR-LADA has complemented the existing fault isolation toolset and has allowed for quicker resolution of design and manufacturing issues. The paper explains how TR-LADA increases the LADA localization resolution by eliminating the well interaction, provides the timing of the event detected by LADA, indicates the propagation direction of the critical signals detected by LADA, allows the analyst to infer the logic values of the critical signals, and separates multiple interactions occurring at the same site for better understanding of the critical signals.

Measurements of the Collisionally Quenched Lifetime of CO in Hydrocarbon Flames

1994 ◽  
Vol 48 (9) ◽  
pp. 1118-1124 ◽  
Author(s):  
Sara Agrup ◽  
Marcus Aldén
Keyword(s):  
Laser Induced Fluorescence ◽  
Polyaromatic Hydrocarbon ◽  
Time Decay ◽  
Collisional Quenching ◽  
Time Resolved ◽  
Hydrocarbon Flames ◽  
Effective Lifetime ◽  
Ethylene Flame ◽  
Oxygen Flame ◽  
Different Parts

Time-resolved laser-induced fluorescence (LIF) from CO molecules in hydrocarbon flames was studied. Collisional quenching constants were evaluated on the basis of the exponential decays. Effective lifetime in a methane/oxygen flame was observed to vary between 250 and 400 ps depending on the position within the flame, and from 400 to 600 ps in the non-sooty parts of an ethylene/air flame. Fluorescence, constituting simultaneous spatially and temporally resolved decays, was also registered from various sections along a laser beam that probed different parts of the flame. Spectral recordings revealed not only the expected CO peaks but also, in the ethylene flame, laser-induced emission from C2 Swan bands and from polyaromatic hydrocarbon (PAH) emission that affected the fluorescence time decay in the sooty part of the flame.

scholarly journals Planar Laser-Induced Fluorescence fuel concentration measurements in isothermal Diesel sprays

2002 ◽  
Vol 10 (7) ◽  
pp. 309 ◽  
Author(s):  
José V. Pastor ◽  
José J. López ◽  
J. Enrique Juliá ◽  
Jesús V. Benajes
Keyword(s):  
Laser Induced Fluorescence ◽  
Diesel Sprays ◽  
Fuel Concentration ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser ◽  
Concentration Measurements

scholarly journals Time-resolved laser-induced fluorescence spectroscopy as a diagnostic instrument in head and neck carcinoma

2010 ◽  
Vol 142 (6) ◽  
pp. 838-844 ◽  
Author(s):  
Jeremy D. Meier ◽  
Hongtao Xie ◽  
Yang Sun ◽  
Yinghua Sun ◽  
Nisa Hatami ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Head And Neck ◽  
Head And Neck Carcinoma ◽  
Laser Induced Fluorescence ◽  
Diagnostic Instrument ◽  
Time Resolved ◽  
Neck Carcinoma
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