C1.1.3.4 Analysis of Rutherford Scattering
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Analysis of Rutherford Scattering
The fact that an atom is „mostly empty“ was confirmed by Rutherford, Geiger and Marsden in a momentous experiment. They let a parallel bundle of α-particles fall on a very thin sheet of gold foil. In so doing they found that the vast majority of α-particles pass through the gold foil almost without any deflection at all and only very few are deflected to any large degree. They concluded from this that atoms comprise a nearly massless, extended shell and a massive core concentrated practically at a point.
Experiment C1.1.3.4, carries out an observation with an Am-241-preparation in a vacuum chamber. Depending on the scatter angle ϑ the scatter rate N(ϑ) of the α-particles is measured with a Geiger-Müller tube.
Components of experiment:
| 1 | 559 82OZ | Am-241 preparation, 330 kBq NOT INCLUDED - SOURCE LOCAL |
| 1 | 559 56 | Rutherford scattering chamber |
| 1 | 559 52 | Aluminium foil in frame |
| 1 | 559 931 | Discriminator preamplifier |
| 1 | 562 791 | Plug-in power supply, 12 V AC |
| 1 | 575 471 | Counter S |
| 1 | 378 73 | Rotary-vane vacuum pump S 1.5 |
| 1 | 378 005 | T-piece, DN 16 KF |
| 1 | 378 040ET2 | Centring rings (adapters), DN 10/16 KF, set of 2 |
| 1 | 378 045ET2 | Centring rings, DN 16 KF, set of 2 |
| 2 | 378 050 | Clamping ring, DN 10/16 KF |
| 1 | 378 771 | Air inlet valve, DN 10 KF |
| 1 | 378 031 | Hose nozzle, DN 16 KF |
| 1 | 667 186 | Vacuum rubber tubing, 8 mm diam. |
| 1 | 501 01 | BNC cable, 0.25 m |
| 1 | 575 24 | Screened cable, BNC/4 mm |
| 1 | additionally required: PC with Windows 7 or higher |
AM-214 is considered DANGEROUS GOODS. THIS ITEM IS NOT INCLUDED
