Argon purification in the liquid phase

Argon purification in the liquid phase
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液相中的氩气纯化

DOI：
10.1016/0168-9002(93)91209-6
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发表时间：
1993
期刊：
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
影响因子：
1.4
通讯作者：
L. Periale
L. Periale
中科院分区：
物理与天体物理3区
文献类型：
--
作者：
P. Cennini;S. Cittolin;L. Dumps;A. Placci;J. Revol;C. Rubbia;L. Fortson;P. Picchi;F. Cavanna;G. Mortari;M. Verdecchia;D. Cline;G. Muratori;S. Otwinowski;Hong;M. Zhou;A. Bettini;F. Casagrande;P. Casoli;S. Centro;B. Dainese;C. Vecchi;A. Pepato;F. Pietropaolo;P. Rossi;S. Suzuki;S. Ventura;P. Benetti;E. Calligarich;R. Dolfini;A. G. Berzolari;F. Mauri;L. Mazzone;C. Montanari;A. Piazzoli;A. Rappoldi;G. Raselli;D. Scannicchio;L. Periale

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In the R&D programme for the ICARUS experiment, we have developed a practical procedure to purify liquid argon in the liquid phase. Extreme purity is obtained, corresponding to an electronegative impurity concentration below 0.1ppbof 02equivalent. This corresponds to an electron lifetime in the range of several milliseconds equivalent to attenuation length of a few metres. The procedure has been tested up to flows of the order of 1000 litres of liquid per hour. The new technique makes it possible to operate very large amounts of ultrapure liquid argon as foreseen for the multikiloton ICARUS experiment at Gran Sasso.