Tilted foil polarization of radioactive ions
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- 作者：ISOLDE Collaboration ; M. Lindroos ; C. Broude ; G. Goldring ; H. Haas ; M. Hass ; P. Richards ; L. Weissman
- 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 出版年：1995
- 出版时间：1 July 1995
- 年：1995
- 卷：361
- 期：1-2
- 页码：53-59
- 全文大小：601 K
文摘
The tilted foil polarization technique has been applied to a beam of radioactive 23Mg () ions from ISOLDE. To achieve sufficient energy for penetration of the foils a high voltage platform has been constructed and used for acceleration of the initial 120 keV beam of 2+ 23Mg ions to 480 keV. The resulting asymmetry ε of the emitted β-radiation from the 23Mg implanted into a cold Pt stopper has been measured as a function of a holding magnetic field. At B = 0.09 T a value of ε = −7.4(1) × 10−3 was found. The asymmetry was reduced to ε = −3.3(4) × 10−3 at a field below 0.005 T. It is argued that this hard core asymmetry occurs as a result of the internal interaction between the polarized nuclei and the defects created in the implantation process.