Hi everyone,(adsbygoogle = window.adsbygoogle || []).push({});

Yes Im a newbie here so forgive me if I dont ask the question correctly. I am trying to understand how to determine the minimal and maximum path length based on gas absorption.

I know this is based on Beer Lamberts Law but I am not sure which formulas to use and the order to use them. I appologize but I am not degreed in physics, but I have been a hobbist in spectroscopy and gas analysis for about 2 years.

In my thoughts I figured tat a minimal the following parameters must be considered.

1. Path Length

2. Gas (O2-760nms, 1% by volume)(range is .5% to 20%)

3. Beam Diameter

4. Pressure

5.Temperature

6. Tansmission

So if I did not ask correctly, I know the gas Im trying to measure, but not sure how to calculate what path length would be acceptable based on the sensitivity and range.

I am willing to do the work, just looking for some guidance here. Thank you in advance.

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# NIR Path Length Calculation

Loading...

Similar Threads - Path Length Calculation | Date |
---|---|

B Orbital path of atoms | Aug 2, 2016 |

Deriving the path integral | May 11, 2015 |

Simple question How to calculate the mean free path | Aug 2, 2012 |

Energy-dependent cross ection and mean free path | Feb 6, 2012 |

Absorption coefficient per unit path length determined for excitation | Aug 26, 2009 |

**Physics Forums - The Fusion of Science and Community**