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For
questions and/or comments about the design and content of this site
send email to bch5143@comp.tamu.edu.
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| Precision On-Line Decay Facility | ||||||||||||||||||||||||||||||||||||||||
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| Picture of the experimental set up to measure beta-decay half-lives. It shows the tape-transport system at the end of MARS and the 4p proportional gas counter approximately 55 cm to the right. | ||||||||||||||||||||||||||||||||||||||||
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Measurements in nuclear beta decay provide the most precise information available on the unitarity of the CKM matrix, a key test for the possible existence of physics beyond the Standard Model. Extremely pure isotopic samples are produced from the MARS recoil spectrometer (in the case of 22Mg the beam was >99.9% pure). The fast tape-transport system is then used to move the collected samples to a shielded counting position where beta-decay half-lives and gamma-ray intensities are measured with uniquely high precision. |
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| Schematic drawing of the experimental set up to measure branching ratios. | ||||||||||||||||||||||||||||||||||||||||
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