From 20ac2438e32e02285291fec387dae8c9a9aca67f Mon Sep 17 00:00:00 2001
From: Jean-Marco Alameddine <jean-marco.alameddine@udo.edu>
Date: Fri, 13 Oct 2023 18:24:27 +0200
Subject: [PATCH] Add muon pair production as a default process for photons

---
 corsika/modules/proposal/ProposalProcessBase.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/corsika/modules/proposal/ProposalProcessBase.hpp b/corsika/modules/proposal/ProposalProcessBase.hpp
index 666fff2ea..0f13f54b4 100644
--- a/corsika/modules/proposal/ProposalProcessBase.hpp
+++ b/corsika/modules/proposal/ProposalProcessBase.hpp
@@ -111,6 +111,10 @@ namespace corsika::proposal {
             PROPOSAL::make_crosssection(PROPOSAL::crosssection::PhotoeffectSauter{},
                                         particle_def, medium, nullptr, interpolate);
         cross_vec.push_back(std::move(photoeffect));
+        auto muonpair = PROPOSAL::make_crosssection(
+            PROPOSAL::crosssection::PhotoMuPairBurkhardtKelnerKokoulin{}, particle_def,
+            medium, nullptr, interpolate);
+        cross_vec.push_back(std::move(muonpair));
         return cross_vec;
       };
 
-- 
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