Light Flux Characterization #17 - 2013-12-16

ID:
17

Name:
Lightflux_100percent

Instrument ID:
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:
100

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:
JHSflux100_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
94 2014 FIXCIT Study_20140106_Isoprene/Ozone/Water_Hydroxyl radical_No Seed_Isoprene + OH + O3, low NO, dry, no seeds 2014-01-06 Gas phase chemical reaction Photooxidation Isoprene, Ozone, Water Hydroxyl radical 25 5 No Seed HO2 11 Download
390 2014 FIXCIT Study_20140117_4-hydroxy 3-peroxy ISOPOOH_Hydroxyl radical_No Seed_4,3-ISOPOOH + OH, low NO, dry, no seeds 2014-01-17 Gas phase chemical reaction Photooxidation 4-hydroxy 3-peroxy ISOPOOH Hydroxyl radical 25 5 HO2 14 Download
391 2014 FIXCIT Study_20140102_ISOPRENE/hydrogen peroxide_Hydroxyl radical_No Seed_Isoprene + OH, low NO, dry, no seeds 2014-01-02 Gas phase chemical reaction Photooxidation ISOPRENE, hydrogen peroxide Hydroxyl radical 27 5 HO2 10 Download
392 2014 FIXCIT Study_20140103_ISOPRENE/nitric oxide/hydrogen peroxide_Hydroxyl radical_No Seed_Isoprene + OH, high NO, dry, no seeds 2014-01-03 Gas phase chemical reaction Photooxidation ISOPRENE, nitric oxide, hydrogen peroxide Hydroxyl radical 26 5 NO 9 Download
393 2014 FIXCIT Study_20140104_1-hydroxy-2-hydroperoxy ISOPOOH/hydrogen peroxide_Hydroxyl radical_No Seed_Blank H2O2 + hv (low-NO "near" bag) and ISOPOOH calibrations 2014-01-04 Blank/Control Photooxidation 1-hydroxy-2-hydroperoxy ISOPOOH, hydrogen peroxide Hydroxyl radical 24-33 5 HO2 11 Download
394 2014 FIXCIT Study_20140105_4-hydroxy-3-nitrooxy ISOPN/hydrogen peroxide_Hydroxyl radical_No Seed_Blank H2O2 + hv (high-NO "far" bag) and isoprene hydroxynitrate calibrations 2014-01-05 Blank/Control Photooxidation 4-hydroxy-3-nitrooxy ISOPN, hydrogen peroxide Hydroxyl radical 24-27 5 HO2 12 Download
396 2014 FIXCIT Study_20140110_ALPHA-PINENE/hydrogen peroxide_Hydroxyl radical_No Seed_Alpha-pinene + OH, low NO, dry, (NH4)2SO4 seed at end 2014-01-10 Gas phase chemical reaction Photooxidation ALPHA-PINENE, hydrogen peroxide Hydroxyl radical 27 5 HO2 13 Download
397 2014 FIXCIT Study_20140114_ISOPRENE/CYCLOHEXANE_Ozone_No Seed_Isoprene + O3, low NO, dry, no seeds 2014-01-14 Gas phase chemical reaction Photooxidation ISOPRENE, CYCLOHEXANE Ozone 25 5 HO2 12 Download
400 2014 FIXCIT Study_20140125_METHACROLEIN/hydrogen peroxide_Hydroxyl radical_Ammonium sulfate_Methacrolein + OH, low NO, dry, (NH4)2SO4 seed at end 2014-01-25 Gas phase chemical reaction, Aerosol formation Photooxidation METHACROLEIN, hydrogen peroxide Hydroxyl radical 28 5 Ammonium sulfate HO2 14 Download
404 2014 FIXCIT Study_20140119_/ISOPRENE/4-hydroxy-3-hydroperoxy ISOPOOH/hydrogen peroxide_Hydroxyl radical_Ammonium sulfate_Isoprene and 4,3-ISOPOOH + OH, low NO, 50% humidity, (NH4)2SO4 seeds 2014-01-19 Gas phase chemical reaction, Aerosol formation Photooxidation Aerosol , ISOPRENE, 4-hydroxy-3-hydroperoxy ISOPOOH, hydrogen peroxide Hydroxyl radical 28 51 Ammonium sulfate HO2 13 Download
405 2014 FIXCIT Study_20140121_ISOPRENE/hydrogen peroxide_Hydroxyl radical_No Seed_Isoprene + OH, low NO, dry, no seeds, lower initial concentration 2014-01-21 Gas phase chemical reaction Photooxidation ISOPRENE, hydrogen peroxide Hydroxyl radical 27 5 HO2 14 Download
406 2014 FIXCIT Study_20140123_ISOPRENE/OZONE_Hydroxyl radical_No Seed_Isoprene + OH + O3, low NO, 50% humidity, no seeds 2014-01-23 Gas phase chemical reaction Photooxidation ISOPRENE, OZONE Hydroxyl radical 25 50 HO2 13 Download
411 2014 FIXCIT Study_20140201_OZONE/CYCLOHEXANE_Ozone_No Seed_Characterization of GTHOS artifact with O3, HO2, and cyclohexane, 30% humidity, no seeds 2014-02-01 Instrument/Chamber characterization Photooxidation OZONE, CYCLOHEXANE Ozone 25 31 Not Sure 4 Download