1 files changed, 16 insertions, 0 deletions
diff --git a/Source/Particles/MultiParticleContainer.H b/Source/Particles/MultiParticleContainer.H
index 9db129b05..ed1c2f371 100644
--- a/Source/Particles/MultiParticleContainer.H
+++ b/Source/Particles/MultiParticleContainer.H
@@ -8,6 +8,7 @@
 #include <RigidInjectedParticleContainer.H>
 #include <PhotonParticleContainer.H>
 #include <LaserParticleContainer.H>
+#include <WarpXParserWrapper.H>
 
 #include <AMReX_Particles.H>
 #ifdef WARPX_QED
@@ -215,6 +216,21 @@ public:
 
     IonizationProcess ionization_process;
 
+    std::string m_B_ext_particle_s = "default";
+    std::string m_E_ext_particle_s = "default";
+    // External fields added to particle fields.
+    amrex::Vector<amrex::Real> m_B_external_particle;
+    amrex::Vector<amrex::Real> m_E_external_particle;
+    // ParserWrapper for B_external on the particle
+    std::unique_ptr<ParserWrapper> m_Bx_particle_parser;
+    std::unique_ptr<ParserWrapper> m_By_particle_parser;
+    std::unique_ptr<ParserWrapper> m_Bz_particle_parser;
+    // ParserWrapper for E_external on the particle
+    std::unique_ptr<ParserWrapper> m_Ex_particle_parser;
+    std::unique_ptr<ParserWrapper> m_Ey_particle_parser;
+    std::unique_ptr<ParserWrapper> m_Ez_particle_parser;
+
+
 protected:
 
     // Particle container types