The Magnetic Levitation Electrometer: The Searches for Quarks and the Electron-Proton Charge Difference

  • G. Morpurgo
Part of the Ettore Majorana International Science Series book series (EMISS, volume 31)


The original subject of these lectures had to be the electron-proton charge difference;but because such a measurement has been,infact, a byproduct of a much longer experiment — the search of quarks in matter — and because both experiments use the same instrument and imply similar problems, I thought that it might be advisable to start describing the experiment of search for quarks.


Electric Dipole Moment Seismic Noise Magnetic Levitation Spurious Effect Residual Charge 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1965, G. Morpurgo, Physics, 2,95.Google Scholar
  2. 1966, G. Gallinaro and G. Morpurgo-Physics Letters 23,609.ADSCrossRefGoogle Scholar
  3. 1967, R. W. Stover et al.-Phys.ReV.164,1599.ADSCrossRefGoogle Scholar
  4. 1968, G. Morpurgo, Rapporteur talk:”The non relativistic quark model”, in proc.XIV conf.on high energy physics (Vienna), p.225 [CERN sci.serv.Geneva 1968].Google Scholar
  5. 1971, W. Fairbank and A. F. Hebard-Proc 12th Int Conf.Low T Phys (Tokyo).Google Scholar
  6. 1973,H. Dylla and J. King-Phys.Rev. A7,1224 (this paper should be consulted for all the necessary references to the electron-proton charge difference before 1973).ADSGoogle Scholar
  7. 1974, E. D. Garris and K. Ziock-Nucl. Instr.and Methods, 117,467.ADSCrossRefGoogle Scholar
  8. 1976, G. Gallinaro, M. Marinelli and G. Morpurgo, report INFN AE/76/1.Google Scholar
  9. 1977, G. Gallinaro, M. Marinelli and G. Morpurgo, P.R.L.38,1255.CrossRefGoogle Scholar
  10. 1977, W. M. Fairbank et al, P.R.L.38,1011.CrossRefGoogle Scholar
  11. 1979, W. M. Fairbank et al, P.R.L 42,142CrossRefGoogle Scholar
  12. 1979, C.Hendricks, R.Hagstrom and G.Hirsch, Berkeley Lab. preprint 9350.Google Scholar
  13. 1981, W. M. Fairbank et al, P.R.L. 46,967.CrossRefGoogle Scholar
  14. 1981, M.Marineili and Morpurgo, Proc.of the Lisbon Conf. of the European Phys.Soc.(Dias de Deus, ed.).Google Scholar
  15. 1982, M. Marinel1i and G. Morpurgo, Physics Reports 85,161. [This paper contains a very detailed description of the instrument, a story of the whole subject and a complete set of references up to 1982; it should be consulted for any further detail].ADSCrossRefGoogle Scholar
  16. 1982, R. Gahler et al., Phys.Rev.D25,2887ADSGoogle Scholar
  17. 1983, G. Morpurgo-Invited paper presented at the meeting “The frontiers of Phyics”,Bologna October 1983 (INFN-GM-83–1)(unpublished).Google Scholar
  18. 1984, M. Marinelli and G. Morpurgo, Phys.Lett.137B, 439.ADSGoogle Scholar
  19. 1985, P. F. Smith et al.Phys.Lett. 153B, 188.ADSGoogle Scholar
  20. 1986, P. F. Smith et al. Phys.Lett. 171B, 129.ADSGoogle Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • G. Morpurgo
    • 1
  1. 1.Istituto di Fisica dell ’Universita’ and INFNGenovaItaly

Personalised recommendations