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and nuclear power workers
±5% (∝ Cs-137)
A large area gas proportional detector for use in simultaneous alpha/beta surveys as well as alpha or beta survey
Trailing Edge: 5
Ludlum Model 9-4 Ion Chamber Johnson and nuclear power workersLudlum Model 9 4 Ion Chamber The Ludlum Model 9 4 is a rugged air ionization chamber for performing beta gamma dose rate measurements over a five decade span ranging from 0 to 500 mSv h (0 to 50,000 mR hr). The ion chamber automatically compensates for changes in temperature and pressure. The chamber wall (including the instrument case) is 1000 mg cm2. A 1000 mg cm2 retractable beta shield allows beta measurement with a 7 mg cm2 window. The six
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