Analysis of Rutherford scattering

VC1.1.3.4
Analysis of Rutherford scattering
Analysis of Rutherford scattering Scattering rate N as a function of the scattering angle delta
Analysis of Rutherford scattering

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Description

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 equipment sets

1 55982OZ Am-241 preparation, 330 kBq LD
1 55956  4  Rutherford scattering chamber LD
1 55952  4  Aluminium foil in frame LD
1 559931  4  Discriminator preamplifier LD
1 562791  4  Plug-in power supply, 12 V AC LD
1 575471  8  Counter S LD
1 37873  8  Rotary-vane vacuum pump S 1.5 LD
1 378005  4  T-piece, DN 16 KF LD
1 378040  8  Centering ring (adapter) DN 10/16 LD
1 378045  8  Centering ring DN 16 KF LD
2 378050  8  Clamping ring, DN 10/16 KF LD
1 378771  8  Air inlet valve, DN 10 KF LD
1 378031  4  Hose nozzle, DN 16 KF LD
1 667186  4  Vacuum rubber tubing, 8 mm diam. LD
1 50101  4  BNC cable, 0.25 m LD
1 57524  4  Screened cable, BNC/4 mm LD
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