Alphie grid case and issues

Output for the example ALPHIE_Grid.

Found an issue when multiple injections were used with species with
different time steps.

Modification to the way to compute the ionization boundary:
  The maximum number of ionizations is computed by eRel/eThreshold
  (relative energy / threshold of ionization)
  For each possible ionization, the probability of ionization is
  computed based on the density of neutrals, cross section and effective
  time divided by the number of maximum ionizations.
  If an ionization takes place, the ionization energy is substracted
  from the relative energy.

runs/ALPHIE_Grid/inputBaseCase.json

@@ -46,14 +46,15 @@
   "boundaryEM": [
     {"name": "Extraction Grid",    "type": "dirichlet", "potential": -150.0, "physicalSurface": 4},
     {"name": "Acceleration Grid",  "type": "dirichlet", "potential": -600.0, "physicalSurface": 5},
-    {"name": "Ionization Chamber", "type": "dirichlet", "potential":    0.0, "physicalSurface": 1}
+    {"name": "Ionization Chamber", "type": "dirichlet", "potential":    0.0, "physicalSurface": 1},
+    {"name": "Infinite",           "type": "dirichlet", "potential": -600.0, "physicalSurface": 2}
   ],
   "inject": [
-    {"name": "Ionization Argon+",   "species": "Argon+",   "flow": 27.0e-6, "units": "A", "v":    322.0, "T": [ 500.0,  500.0,  500.0],
+    {"name": "Ionization Argon+",   "species": "Argon+",   "flow":  1.0e-5, "units": "A", "v":   2500.0, "T": [ 500.0,  500.0,  500.0],
                                     "velDist": ["Maxwellian", "Maxwellian", "Maxwellian"], "n": [ 1, 0, 0], "physicalSurface": 1},
-    {"name": "Ionization Electron", "species": "Electron", "flow": 27.0e-6, "units": "A", "v":  87000.0, "T": [ 500.0,  500.0,  500.0],
+    {"name": "Ionization Electron", "species": "Electron", "flow":  1.0e-5, "units": "A", "v":  87000.0, "T": [30000.0, 30000.0, 30000.0],
                                     "velDist": ["Maxwellian", "Maxwellian", "Maxwellian"], "n": [ 1, 0, 0], "physicalSurface": 1},
-    {"name": "Cathode Electron",    "species": "Electron", "flow":  9.0e-5, "units": "A", "v":  87000.0, "T": [2500.0, 2500.0, 2500.0],
+    {"name": "Cathode Electron",    "species": "Electron", "flow":  1.0e-4, "units": "A", "v":  87000.0, "T": [30000.0, 30000.0, 30000.0],
                                     "velDist": ["Maxwellian", "Maxwellian", "Maxwellian"], "n": [-1, 0, 0], "physicalSurface": 2}
   ],
   "reference": {

runs/ALPHIE_Grid/inputIonization_0.10mA.json

@@ -5,7 +5,7 @@
     "cpuTime": false,
     "numColl": false,
     "EMField": true,
-	"folder": "ionization_0.10mA"
+    "folder": "ionization_0.10mA"
   },
   "geometry": {
     "dimension": 2,
@@ -20,7 +20,7 @@
   "boundary": [ 
     {"name": "Ionization Chanber", "physicalSurface": 1, "bTypes": [
                                                            {"type": "transparent"},
-                                                           {"type": "ionization", "neutral": {"ion": "Argon+", "mass": 6.633e-26, "density": 1.0e17, "velocity": [323, 0, 0], "temperature": 300},
+                                                           {"type": "ionization", "neutral": {"ion": "Argon+", "mass": 6.633e-26, "density": 5.0e16, "velocity": [2500, 0, 0], "temperature": 300},
                                                                                   "effectiveTime": 5.0e-6,"energyThreshold": 15.76, "crossSection": "./data/collisions/IO_e-Ar.dat"}
                                                           ]},
     {"name": "Vacuum Chamber",     "physicalSurface": 2, "bTypes": [
@@ -47,10 +47,11 @@
   "boundaryEM": [
     {"name": "Extraction Grid",    "type": "dirichlet", "potential": -150.0, "physicalSurface": 4},
     {"name": "Acceleration Grid",  "type": "dirichlet", "potential": -600.0, "physicalSurface": 5},
-    {"name": "Ionization Chamber", "type": "dirichlet", "potential":    0.0, "physicalSurface": 1}
+    {"name": "Ionization Chamber", "type": "dirichlet", "potential":    0.0, "physicalSurface": 1},
+    {"name": "Infinite",           "type": "dirichlet", "potential": -600.0, "physicalSurface": 2}
   ],
   "inject": [
-    {"name": "Cathode Electron",    "species": "Electron", "flow":  1.0e-4, "units": "A", "v":  87000.0, "T": [2500.0, 2500.0, 2500.0],
+    {"name": "Cathode Electron",    "species": "Electron", "flow":  1.0e-4, "units": "A", "v":  87000.0, "T": [30000.0, 30000.0, 30000.0],
                                     "velDist": ["Maxwellian", "Maxwellian", "Maxwellian"], "n": [-1, 0, 0], "physicalSurface": 2}
   ],
   "reference": {

runs/ALPHIE_Grid/mesh.geo

@@ -1,11 +1,11 @@
-zg1  = 0.0025;
-tg1  = 0.0004;
+zg1  = 0.0020;
+tg1  = 0.0003;
 rg1  = 0.0005;
-dg   = 0.0025;
-zg2  = zg1+tg1+dg;
+dg   = 0.0020;
+zg2  = zg1 + tg1 + dg;
 tg2  = tg1;
 rg2  = rg1;
-zEnd = 0.0042;
+zEnd = 0.0050;
 Lz   = zg2 + tg2 + zEnd;
 Lr   = rg1 + 0.0001;