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A Sensitive Neutron Counter with a High-Pressure Ionization Chamber Filled with BF3

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Zielczyński M., Rusinowski Z., Tulik P.
Polish Journal of Medical Physics And Engineering
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2007
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vol. 13
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issue 3
157-162
EN
A ionization chamber, filled with 10BF3 and operating in a pulse mode, was investigated as a possible sensitive pocket detector for detection of neutrons at low flux densities. The chamber is 85 mm long and 19 mm in diameter. The measured sensitivity of the chamber placed near the human body (in the belt), without any additional moderator was of the order of 1 pulse/n cm-2 in the radiation field of a 252Cf source.
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Calibration of the RSS-131 high efficiency ionization chamber for radiation dose monitoring during plasma experiments conducted on plasma focus device

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Szewczak K., Jednoróg S.
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EN
Plasma research poses a radiation hazard. Due to the program of deuterium plasma research using the PF-1000 device, it is an intensive source of neutrons (up to 1011 n · pulse −1) with energy of 2,45 MeV and ionizing electromagnetic radiation with a broad energy spectrum. Both types of radiation are mostly emitted in ultra-short pulses (∼100 ns). The aim of this work was to test and calibrate the RSS-131 radiometer for its application in measurements of ultra-short electromagnetic radiation pulses with broad energy spectrum emitted during PF-1000 discharge. In addition, the results of raw measurements performed in the control room are presented.
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