130 • Atomic and nuclear physics Bench for experiments with radioactivity


This bench for radioactive sources and GM tubes provides a stable and convenient setup, allowing reproducible results when making experiments with radioactivity. Typical quantitative experiments comprises: absorption of gamma radiation in lead or aluminium, absorption of beta radiation in aluminium, variation of intensity with distance etc. The equipment consists of a 40 cm long bench with a tape measure, a saddle for mounting the GM tube and a mount for radioactive sources. Also provided is a set of absorber plates comprising: 5 ea. 2mm and 10 ea. 1 mm lead plates, 2 ea. 3 mm, 6 ea. 2 mm and 4 ea. 0.5 mm aluminium plates. The absorbers can be placed hanging from a Ø 6 mm steel rod, protruding from the source mount. The absorber plates are supplied in a convenient storage box. The lead plates have been enamelled to protect fingers from lead contamination.


5141.00 Bench for experiments with radioactivity Coincidence experiments


Holder for radioactive source This holder can be placed in a 2946.50 joint link to ensure fixed distances to two detectors in a rotational symmetric arrange- ment. Useful for studying angular correlation in nuclear decays or positron annihilation.


5141.95 Holder for radioactive source


Mounting hardware 5141.10 Mounting Bench Rail 2946.10 Sliding Saddle 2946.50 Joint Link


5141.02 2946.10


5141.00


5135.70


5141.95


2946.50 Good News: A wider range of sources can now be used with our equipment


Although A/S Frederiksen only provides the radioactive sources shown in this catalogue, other popular types can now be used with our equipment. The two new types are the 12 mm cylindrical sources (as provided by for instance Phywe and Leybold) - and the 25 mm disk sources (as provided by for instance Pasco and Spectrum Techniques). Please refer to the table below for the relevant item numbers


Selection Guide Type 1 (Frederiksen) Type 2 (disk) Type 3 (cylindrical)


Source holder on rod including abs. plates Source holder on rod without abs. plates Bench for experiments with radioactivity Deflection of beta particles Beta spectrum apparatus Holder for radioactive source


Source holder for exp. bench, simple


5140.05 5140.07 5141.00 5141.05 5165.00 5141.95 5141.80


5140.25 5140.27 5141.20 5141.25 5165.20 n.a.


5141.85


5140.35 5140.37 5141.10 5141.35 5165.30 5141.97 5141.87


Passion for Science


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