Background measurements
Background readings in Ann Arbor, MI
This background reading is basically the same around the world.
| Energy (keV) | Expected energy | % difference | ID |
|---|---|---|---|
| 186.4 | 185.7 | -0.37% | U-235 |
| 238.2 | 238.6 | 0.18% | Pb-212 |
| 295.9 | 295.2 | -0.24% | Pb-214 |
| 337.7 | 338.5 | 0.23% | Ac-228 |
| 351.7 | 352. | 0.09% | Pb-214 |
| 463.2 | 463. | -0.04% | Ac-228 |
| 511. | 510.7 | -0.06% | Tl-208 |
| 582.7 | 583.2 | 0.09% | Tl-208 |
| 608.6 | 609.3 | 0.12% | Bi-214 |
| 664.3 | 665.8 | 0.22% | Bi-214 |
| 726.1 | 727.2 | 0.15% | Bi-212 |
| 765.9 | 765.8 | -0.01% | Nb-95 |
| 783.8 | 782. | -0.23% | Ac-228 |
| 793.8 | 795. | 0.15% | Ac-228 |
| 803.8 | 806. | 0.28% | Bi-214 |
| 833.6 | 836. | 0.28% | Ac-228 |
| 859.5 | 860. | 0.06% | Tl-208 |
| 909.3 | 911. | 0.19% | ac-228 |
| 931.2 | 934. | 0.3% | Bi-214 |
| 967.1 | 969. | 0.2% | Ac-228 |
| 998.9 | 1004. | 0.51% | Tl-208 |
| 1118.4 | 1120.4 | 0.18% | Bi-214 |
| 1152.3 | 1155.3 | 0.26% | Bi-214 |
| 1170.2 | 1171.1 | 0.08% | Pa-234 |
| 1235.9 | 1237.3 | 0.11% | Pa-234 |
| 1277.7 | 1281.1 | 0.26% | Bi-214 |
| 1329.5 | . | 0.% | Unidentified |
| 1375.3 | 1377.7 | 0.17% | Bi-214 |
| 1405.2 | 1408. | 0.2% | Bi-214 |
| 1457. | 1461. | 0.28% | K-40 |
| 1488.8 | 1495.8 | 0.47% | Ac-228 |
| 1588.4 | 1590. | 0.1% | Tl-210 |
| 1618.3 | 1620.5 | 0.14% | Bi-212 |
| 1628.2 | . | 0.% | Unidentified |
| 1658.1 | 1661.2 | 0.19% | Bi-214 |
| 1727.8 | 1730.9 | 0.18% | Ac-228 |
| 1761.7 | 1768. | 0.36% | Pa-234 |
| 1845.3 | 1849.8 | 0.24% | Pa-234 |
| 2102.2 | 2103.5 | 0.06% | Tl-208 Single Escape |
| 2116.2 | . | 0.% | Unidentified |
| 2201.8 | . | 0.% | Unidentified |
| 2444.8 | . | 0.% | Unidentified |
| 2612. | 2614.5 | 0.09% | Tl-208 |