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-rw-r--r--fg21sim/configs/20-extragalactic.conf.spec5
1 files changed, 5 insertions, 0 deletions
diff --git a/fg21sim/configs/20-extragalactic.conf.spec b/fg21sim/configs/20-extragalactic.conf.spec
index 5c1d3aa..633ef78 100644
--- a/fg21sim/configs/20-extragalactic.conf.spec
+++ b/fg21sim/configs/20-extragalactic.conf.spec
@@ -77,6 +77,11 @@
# equation to calculate the electron spectrum.
pgrid_num = integer(default=100, min=10)
+ # Number of grid points used as the buffer region near the lower
+ # boundary, and the value within this buffer region will be fixed to
+ # avoid unphysical pile-up of low-energy electrons.
+ buffer_np = integer(default=5, min=0)
+
# Time step for solving the Fokker-Planck equation (unit: Gyr)
time_step = float(default=0.01, min=1e-5, max=1.0)