[Run issue]:How to Correctly Add Oxygen in TOPASChemistry_Extended?

[Edgarchen666]

Contact Details

2101110329@stu.pku.edu.cn

What was the issue?

Dear TOPAS Community/Support Team,
I am working with the IRTCummulative example and attempting to add oxygen-related reactions using the TOPASChemistry_Extended module. Despite multiple attempts, the configurations seem to have no effect. Could anyone advise on the correct approach?
Problem Details:

1. Direct Oxygen Concentration Declaration:
   Tried setting d:Ch/Oxygen/Concentration = 0.25e-3 M, but no changes observed.
2. Reaction with Oxygen:
   Added the following for the SolvatedElectron/Oxygen reaction:
   sv:Ch/TOPASChemistry/Reaction/SolvatedElectron/Oxygen/Products = 1 "SuperoxideAnion"
   d:Ch/TOPASChemistry/Reaction/SolvatedElectron/Oxygen/ReactionRate = 1.9e10 /M/s
   i:Ch/TOPASChemistry/Reaction/SolvatedElectron/Oxygen/ReactionType = 5
   d:Ch/TOPASChemistry/Reaction/SolvatedElectron/Oxygen/Concentration = 25e-6 M
   s:Ch/TOPASChemistry/Reaction/SolvatedElectron/Oxygen/ScavengingModel = "ExponentialSingleFactor"
   b:Ch/TOPASChemistry/Reaction/SolvatedElectron/Oxygen/CompatibleWithStepByStep = "True"

However, the simulation behavior of oxygen-related reactions remains unchanged.
Any insights or configuration snippets would be greatly appreciated!
Thank you for your support！

TOPAS-nBio category

Geometry

Version

3.0

What Operative System (OS) are you running on?

Windows (WSL)

Relevant log output

No response

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[wgshin]

Hi, please use reaction type 6 instead for the background reactions.

[wgshin]

• Reaction => BackgroundReaction like:
  sv:Ch/TOPASChemistry/BackgroundReaction/SolvatedElectron/Oxygen/Products = 1 "SuperoxideAnion"
  d:Ch/TOPASChemistry/BackgroundReaction/SolvatedElectron/Oxygen/ReactionRate = 1.9e10 /M/s
  i:Ch/TOPASChemistry/BackgroundReaction/SolvatedElectron/Oxygen/ReactionType = 6
  d:Ch/TOPASChemistry/BackgroundReaction/SolvatedElectron/Oxygen/Concentration = 25e-6 M
  s:Ch/TOPASChemistry/BackgroundReaction/SolvatedElectron/Oxygen/ScavengingModel = "ExponentialSingleFactor"
  b:Ch/TOPASChemistry/BackgroundReaction/SolvatedElectron/Oxygen/CompatibleWithStepByStep = "False"

[tmasilela]

Just to add on to this, if you're using the new version of TOPAS-nBio (v4.0) TOPASChemistry_Extended is no longer being used.