We report on the measurement of the specific activity of Ar-39 in natural argon. The measurement was performed with a 2.3-1 two-phase (liquid and gas) argon drift chamber. The detector was developed by the WARP Collaboration as a prototype detector for WIMP Dark Matter searches with argon as a target. The detector was operated for more than two years at Laboratori Nazionali del Gran Sasso, Italy, at a depth of 3400 m w.e. The specific activity measured for Ar-39 is 1.01 +/- 0.02(stat) +/- 0.08(syst) Bq per kg of Ar-nat. (c) 2007 Elsevier B.V. All rights reserved.
Measurement of the specific activity of Ar-39 in natural argon / Benetti, P.; Calaprice, F.; Calligarich, E.; Cambiaghi, M.; Carbonara, F.; Cavanna, F.; Cocco, A. G.; Pompeo, F. D.; Ferrari, N.; Fiorillo, Giuliana; Galbiati, C.; Grandi, L.; Mangano, G.; Montanan, C.; Pandola, L.; Rappoldi, A.; Raselli, G. L.; Roncadelli, M.; Rossella, M.; Rubbia, C.; Santorelli, R.; Szelc, A. M.; Vignoli, C.; Zhao, Y.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 574:(2007), pp. 83-88. [10.1016/j.nima.2007.01.106]
Measurement of the specific activity of Ar-39 in natural argon
FIORILLO, GIULIANA;G. Mangano;
2007
Abstract
We report on the measurement of the specific activity of Ar-39 in natural argon. The measurement was performed with a 2.3-1 two-phase (liquid and gas) argon drift chamber. The detector was developed by the WARP Collaboration as a prototype detector for WIMP Dark Matter searches with argon as a target. The detector was operated for more than two years at Laboratori Nazionali del Gran Sasso, Italy, at a depth of 3400 m w.e. The specific activity measured for Ar-39 is 1.01 +/- 0.02(stat) +/- 0.08(syst) Bq per kg of Ar-nat. (c) 2007 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
