Hi. Thanks a lot for ur reply. I calculated the absorption cross section.Pls let me know if it right
pls forget about that 1% just assume concentration is 8500ppm
A = 0.32, P = 1 atm, R = 0.082 liter * (atm/mol) * * deg k
length = 100cm, T = let say (294K ) --- assuming 21C...
HI
Thanks for ur reply
We assume only Acetylene is responsible for absorption.No need to worry about N2.
expt details
I used HOllow core Photonic crystal fiber(HC-PCF) as path length,NIR Laser diode(NIR-1531.6nm ) as light source and photo detector for detection of light.
At 1531.6nm...
I want to calculate absorption cross-section by using Beer-Lamberts law for Acetylene gas at NIR region.I. The calibration done at 1531.6nm.
Absorbance= log to base10(intensity of incident light/intensity after passing through gas cell) = 0.32 ;;;;gas cell filled with Acetylene gas...
want to calculate absorption coefficient or absorption crosssection for 1% C2H2 gas
Path length = 1meter
Absorbene = 0.32
concentration = 8500ppm
pressure = 1 atm
Temperature = 25C
I need to express this concentration to mol/cm3.
Pls let me know if u have anyidea