Light Flux Characterization #19 - 2013-12-16
ID:
19
Name:
Lightflux_10percent
LICOR Spectroradiometer (#354)
Chamber:
Seinfeld chambers
Date of characterization experiment:
2013-12-16
Months since calibration:
Measurement technique:
The instrument measures the irradiance, which is then converted to flux
Photolysis frequency of NO2 with max lighting [Hz]:
Photolysis frequency of H2O2 with max lighting [Hz]:
Photolysis frequency of O3 with max lighting [Hz]:
Total number of lights:
320
Light percentage on:
10
Light intensity:
Light source type:
UV black lamps (350 nm centered)
Position and pattern of lights:
Lights are positioned on the long side of the chambers. There are UV-reflective aluminum all around the chamber, such that the flux in one corner is similar to the middle.
Data collection description:
Data were collected as an average of several locations in the chamber.
Data analysis description:
Averaged data in W/m2 were converted to photon flux and scaled by the H2O2 photolysis in a modeling program that uses the most up-to-date H2O2 absorption cross section.
Link to supplemental information:
Additional notes:
Characterization data file:
JHSflux10_Dec2013.csv
Experiments
ID | Name | Start date | Experiment Category | Reaction Type | Reactant(s) | Oxidant Name | Temperature | Humidity | Type of Seed | RO2 Main Fate | Data Sets (count) | Actions |
---|---|---|---|---|---|---|---|---|---|---|---|---|
401 | 2014 FIXCIT Study_20140126_METHACROLEIN/nitrogen dioxide/methyl nitrite/methacrylic acid epoxide_Hydroxyl radical_Ammonium sulfate_Methacrolein + OH, high NO, dry, then humidify and add (NH4)2SO4 seed at end | 2014-01-26 | Gas phase chemical reaction, Aerosol formation | Photooxidation | METHACROLEIN, nitrogen dioxide, methyl nitrite, methacrylic acid epoxide | Hydroxyl radical | 26 | 5 | Ammonium sulfate | NO2 | 15 | Download |
407 | 2014 FIXCIT Study_20140124_4-hydroxy-3-nitrooxy ISOPN/Methyl nitrite/nitric oxide/_Hydroxyl radical_Ammonium sulfate_4,3-isoprene hydroxynitrate + OH, high NO, 50% RH, (NH4)2SO4 seed | 2014-01-24 | Gas phase chemical reaction, Aerosol formation | Photooxidation | 4-hydroxy-3-nitrooxy ISOPN, Methyl nitrite, nitric oxide, Aerosol | Hydroxyl radical | 26 | 52 | Ammonium sulfate | NO | 13 | Download |
408 | 2014 FIXCIT Study_20140127_trans-beta-IEPOX/methyl nitrite_Hydroxyl radical_No Seed_Trans-beta-IEPOX + OH, moderate NO, dry, no seeds | 2014-01-27 | Gas phase chemical reaction | Photooxidation | trans-beta-IEPOX, methyl nitrite | Hydroxyl radical | 25 | 5 | NO | 13 | Download | |
410 | 2014 FIXCIT Study_20140130_PINONALDEHYDE/Pinonic acid/Methyl nitrite_Hydroxyl radical_No Seed_Pinonaldehyde + OH, moderate NO, dry, no seeds | 2014-01-30 | Gas phase chemical reaction | Photooxidation | PINONALDEHYDE, Pinonic acid, Methyl nitrite | Hydroxyl radical | 26 | 5 | NO | 11 | Download | |
926 | 2014 FIXCIT Study_20140128_Isoprene/Methyl nitrite_Hydroxyl radical_No Seed | 2014-01-28 | Gas phase chemical reaction | Photooxidation | Isoprene, Methyl nitrite | Hydroxyl radical | 25 | 5 | No Seed | NO | 16 | Download |