BEAMS3D: further fix to vel. diff calc.

PrincetonUniversity · Dec 12, 2024 · 1440758 · 1440758
1 parent a7b8c7d
commit 1440758
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/BEAMS3D/Sources/beams3d_physics_mod.f90 b/BEAMS3D/Sources/beams3d_physics_mod.f90
@@ -387,7 +387,7 @@ SUBROUTINE beams3d_physics_gc(t, q)
             !-----------------------------------------------------------
             dve   = speed*tau_spit_inv*(1-2*te_temp*inv_mymass*e_charge/speed**2.0)
             dvi   = vc3_tauinv/(speed*speed)*(1+ti_temp*inv_mymass*e_charge/speed**2.0)
-            reduction = (dve + dvi)*dt-sigma*zeta
+            reduction = (dve + dvi)*dt+sigma*zeta
             newspeed = speed - reduction
             dve=dve+ddve
             dvi=dvi+ddvi