Update general.json with foil masses and thicknesses

Author: cdunn314

data/general.json

@@ -136,18 +136,38 @@
             "materials": [
                 {
                     "position": "A 325 - top",
-                    "material": "Zr",
+                    "material": "Nb",
+                    "designator": "Nb Packet #4"
+                    "number_of_foils": 2,
                     "mass": {
-                        "value": null,
+                        "value": 0.5467,
+                        "unit": "g"
+                    },
+                    "mass_err": {
+                        "value": 0.0003
                         "unit": "g"
+                    },
+                    "thickness": {
+                        "value": 0.02,
+                        "unit": "inch"
                     }
                 },
                 {
                     "position": "A 325 - bottom",
-                    "material": "Nb",
+                    "material": "Zr",
+                    "designator": "Zr Packet #1"
+                    "number_of_foils": 8,
                     "mass": {
-                        "value": null,
+                        "value": 0.9036,
+                        "unit": "g"
+                    },
+                    "mass_err": {
+                        "value": 0.0001,
                         "unit": "g"
+                    },
+                    "thickness": {
+                        "value": 0.04,
+                        "unit": "inch"
                     }
                 }
             ]
@@ -377,4 +397,4 @@
             }
         }
     }
-}
+}