Measurement of the specific activity of 39 Ar in natural argon
نویسندگان
چکیده
We report on the measurement of the specific activity of Ar in natural argon. The measurement was performed with a 2.3-liter 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 3,400m w.e. The specific activity measured for Ar is 0.87±0.02(stat)±0.08(syst) Bq per kg of Ar.
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