McKeown, R. D. and Kutschera, W. and Ledingham, K. (1987) Attempts to use accelerator mass spectrometry to detect fractionally charged particles in Nature. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, 323 (1569). pp. 145-154. ISSN 1364-503X. doi:10.1098/rsta.1987.0078. https://resolver.caltech.edu/CaltechAUTHORS:20141113-131435593
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Abstract
The search for fractionally charged particles (FCP) in Nature is ultimately motivated by the belief that the fundamental constituents of the atomic nucleus are quarks, which have charge in integral units of k of the electronic charge. The reported observation of fractional charge in niobium by a group at Stanford University in 1981 has motivated many new efforts to detect FCP in the past few years. The techniques of accelerator mass spectrometry (AMSh) ave been successfully applied to this problem at several laboratories. The method generally involves the use of electrostatic analysis systems to separate the FCP from integrally charged ions, since the mass of the FCP is not known a priori. A variety of materials have been searched in these experiments and the most sensitive limits are at concentration levels of less than 10^(-18) FCP per atom of host material.
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| Additional Information: | © 1987 The Royal Society. I acknowledge my co-workers on the Caltech experiment, particularly Richard Milner, Kai Chang and Barbara Cooper, for a fruitful and enjoyable collaboration. Their advice and criticism have been very valuable to me in pursuing this subject, and their persistent efforts resulted in the very sensitive limits ultimately obtained in that experiment. I also mention George Zweig for his encouragement and for useful conversations in the early stages of this work. The support of the National Science Foundation (grant PHY82-15500) and Caltech Sloan Fund is gratefully acknowledged. | |||||||||
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| Issue or Number: | 1569 | |||||||||
| DOI: | 10.1098/rsta.1987.0078 | |||||||||
| Record Number: | CaltechAUTHORS:20141113-131435593 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141113-131435593 | |||||||||
| Official Citation: | McKeown, R. D., Kutschera, W., & Ledingham, K. (1987). Attempts to Use Accelerator Mass Spectrometry to Detect Fractionally Charged Particles in Nature [and Discussion]. Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 323(1569), 145-154. doi: 10.1098/rsta.1987.0078 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 51716 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | INVALID USER | |||||||||
| Deposited On: | 14 Nov 2014 16:57 | |||||||||
| Last Modified: | 10 Nov 2021 19:14 |
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