| Autor: |
J.L. Guyonnet, J.E. Campagne, I. Linck, A. S. Barabash, C. Longuemare, J. L. Reyss, D. Dassié, C. Augier, Vl.I. Tretyak, Ph. Hubert, V. Zerkin, F. Hubert, R. Arnold, P. Mennrath, O. Purtov, Ts. Vylov, V. B. Brudanin, S. Jullian, I. Vanushin, F. Piquemal, V. G. Egorov, D. Lalanne, G. Szklarz, A.A. Nozdrin, D. Blum, I. Kisel, F. Scheibling, V. N. Kornoukov, A. Vareille, R. Eschbach, V. I. Umatov, H. Nicholson, O.I. Kochetov, C.S. Sutton, Yu. Vasilyev, V.E. Kovalenko, F. Mauger, Jouni Suhonen, F. Laplanche, F. Leccia |
| Rok vydání: |
1997 |
| Předmět: |
|
| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 401:144-155 |
| ISSN: |
0168-9002 |
| DOI: |
10.1016/s0168-9002(97)01013-9 |
| Popis: |
In the double beta decay (ββ) experiment NEMO-2, the 214 Bi radioactivity has been measured as background for the ββ processes. The analysis of the 214 Bi contamination has been performed via the signature of 214 Po alpha decay. This method has been applied to data taken with enriched 100 Mo and 116 Cd sources. At the level of NEMO-2's sensitivity, in a 1.0 mole yr study of enriched material, the contamination of the sources can be measured in the range of 2.0 mBq kg −1 . The effects of deposited contamination by 222 Rn are also discussed and estimated at the level of 0.3 mBq per square meter of source foil. Backgrounds for neutrinoless double beta decay (ββ0v) are deduced from these measurements and the consequences for the higher sensitivity ββ experiment NEMO-3 are drawn. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect