SIMPLE ANTICOINCIDENCE ARRANGEMENT WITH TWO PROPORTIONAL FLOW-THROUGH COUNTERS FOR THE DETERMINATION OF SMALL BETA ACTIVITIES

Journal Article · Sat Oct 01 04:00:00 EDT 1960 · Kerntechnik (West Germany) Merged with Atomkernenergie to form Atomkernenerg./Kerntech.kyu Hokoku

OSTI ID:4137756

Fessler, H; Kiefer, H; Maushart, R

Two anticoincidence arrangements used for the measurement of low beta activities were described. The arrangements used gaas flow-through counters with latticed arranged counter wires both as shielded counter and measuring counter. In the first device the preparation is brought between two counters each with 300 cm/sup 2/ of effective counting surface and can be measured either in 2 or 4 pi geometry. In the second device the preparation is placed between a similar shielded counter but a somewhat smaller measuring counter. Its electrode lattice can be interchanged easily so that counting surfaces of various sizes up to 69 cm/ sup 2/ are possible. From measurements with electrodes of various diameters it is shown that the specific zero effect in each case is 0.1 pulse/min cm/sup 2/ of counter surface or less in a lead shield of only 100 kg. The optimum electrode sizes for test preparations of various diameters were discussed. (tr-auth)

• Research Organization: Kernforschungszentrum, Karlsruhe, Ger.
• NSA Number: NSA-15-004124
• OSTI ID: 4137756
• Journal Information: Kerntechnik (West Germany) Merged with Atomkernenergie to form Atomkernenerg./Kerntech.kyu Hokoku, Journal Name: Kerntechnik (West Germany) Merged with Atomkernenergie to form Atomkernenerg./Kerntech.kyu Hokoku Vol. Vol: 2; ISSN KERTA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

BETA PARTICLES
COUNTERS
ELECTRODES
ENGINEERING AND EQUIPMENT
GAS FLOW
MEASURED VALUES
SHIELDING
WIRES