add the new net with n and proton approximations

Author: zingale

networks/he-burn/he-burn-31anp/he-burn-31anp.png

@@ -0,0 +1,55 @@
+import pynucastro as pyna
+from pynucastro.networks import AmrexAstroCxxNetwork
+
+import he_burn_core
+
+
+DO_DERIVED_RATES = True
+
+
+def doit():
+
+    lib = he_burn_core.get_core_library(include_n14_sequence=True,
+                                        include_zn=False,
+                                        include_iron_peak=True,
+                                        include_low_ye=False,
+                                        do_detailed_balance=DO_DERIVED_RATES)
+
+    net = pyna.AmrexAstroCxxNetwork(libraries=[lib],
+                                    symmetric_screening=False)
+
+    # now we approximate some (alpha, p)(p, gamma) links
+
+    net.make_ap_pg_approx(intermediate_nuclei=["cl35", "k39", "sc43", "v47"])
+    net.remove_nuclei(["cl35", "k39", "sc43", "v47"])
+
+    net.make_nn_g_approx(intermediate_nuclei=["fe53", "fe55", "ni57"])
+    net.remove_nuclei(["fe53", "fe55", "ni57"])
+
+    # make all rates with A >= 48 use NSE protons
+    net.make_nse_protons(48)
+
+    print(f"number of nuclei = {len(net.unique_nuclei)}")
+    print(f"number of ReacLib rates = {len(net.reaclib_rates)}")
+    print(f"number of tabular rates = {len(net.tabular_rates)}")
+
+    # let's make a figure
+
+    comp = pyna.Composition(net.unique_nuclei)
+    comp.set_equal()
+
+    rho = 9.e7
+    T = 6.e9
+
+    fig = net.plot(rho, T, comp,
+                   rotated=True, curved_edges=True, hide_xalpha=True,
+                   size=(1800, 900),
+                   node_size=500, node_shape="s", node_color="#337dff", node_font_size=10)
+
+    fig.savefig("he-burn-31anp.png")
+
+    net.write_network()
+
+
+if __name__ == "__main__":
+    doit()

networks/he-burn/he-burn-31anp/he-burn-31anp.py

@@ -0,0 +1 @@
+../he_burn_core.py

networks/he-burn/he-burn-31anp/he_burn_31anp.py

@@ -12,6 +12,7 @@ def doit():
     lib = he_burn_core.get_core_library(include_n14_sequence=True,
                                         include_zn=True,
                                         include_iron_peak=True,
+                                        include_low_ye=True,
                                         do_detailed_balance=DO_DERIVED_RATES)
 
     net = pyna.AmrexAstroCxxNetwork(libraries=[lib],

networks/he-burn/he-burn-31anp/he_burn_core.py

@@ -8,6 +8,7 @@ def get_core_library(*,
                      include_n14_sequence=False,
                      include_zn=False,
                      include_iron_peak=False,
+                     include_low_ye=False,
                      do_detailed_balance=False):
 
     reaclib_lib = pyna.ReacLibLibrary()
@@ -71,11 +72,17 @@ def get_core_library(*,
         # ReacLib and weak / tabular rates linking these.
 
         iron_peak = ["n", "p", "he4",
-                     "mn51", "mn55",
+                     "mn51",
                      "fe52", "fe53", "fe54", "fe55", "fe56",
                      "co55", "co56", "co57",
-                     "ni56", "ni57", "ni58",
-                     "cu59", "zn60"]
+                     "ni56", "ni57", "ni58"]
+
+        if include_zn:
+            iron_peak += ["cu59", "zn60"]
+
+        if include_low_ye:
+            iron_peak += ["mn55"]
+
 
         iron_reaclib = reaclib_lib.linking_nuclei(iron_peak)