• An Ion Balance for Ultra-High-Precision Atomic Mass Measurements.
published in Science  303, p. 334-338 (2004)  (link to abstract / paper )  

• Single-Ion Mass Spectrometry at 100 ppt and Beyond.
published in "Precision Physics of Simple Atomic Systems", edited by S.G. Karshenboim and V.B. Smirnov (Springer-Verlag, Berlin, 2003), p. 177-197

• Two Ions in One Trap: Ultra-High Precision Mass Spectrometry?
published in IEEE Transactions on Instrumentation and Measurement 52 (2), p. 292 (2003)

• Single-Ion Mass Spectrometry at 100 ppt and Beyond.
  published in Canadian Journal of Physics  80, p. 1329-1336  (2002)  (link to abstract )

• Precise Measurements of the Masses of Cs, Rb and Na - A New Route to the Fine Structure Constant.
published in Hyperfine Interactions  132, p. 177-187 (2001) (paper in pdf , 544 kB)  (link to abstract )

• Penning Trap Measurements of the Masses of ¹³³Cs, ⁸⁷Rb, ⁸⁵Rb, and ²³Na with Uncertainties <= 0.2 ppb.
published in Physical Review Letters  83(22), p. 4510-4513 (1999)  (paper in pdf , 100 kB)
 
• Accurate Mass Spectrometry of Trapped Ions.
published in Hyperfine Interactions  108(1-3), p. 227-238 (1997)  (link to abstract )
 
• Classical Squeezing of an Oscillator for Subthermal Noise Operation.
published in Physical Review Letters  74(15), p. 2855-2858 (1995)   (paper in pdf , 352 kB)
 
• Mass-Spectrometry at 0.1-Part-Per-Billion for Fundamental Metrology.
published in IEEE Transactions on Instrumentation and Measurement   44(2), p. 550-552 (1995)
 
• Accurate Atomic Mass Measurements from Penning Trap Mass Comparisons of Individual Ions.
published in Physica Scripta  T59, p. 144-154 (1995)
 
• Atom Traps Compared with Ion Traps.
published in Physica Scripta  T59, p. 131-133 (1995)
 
• Accurate Atomic Masses for Fundamental Metrology.
published in Physical Review Letters  73(11), p. 1481-1484 (1994)   (paper in pdf , 404 kB)
 
• Improved Precision Mass Comparison in a Penning Trap - Techniques and Results,
in Nuclei Far from Stability/Atomic Masses and Fundamental Constants 1992. 1993, Iop Publishing Ltd: Bristol. p. 13-17.
 
• Precision Penning Trap Comparison of Nondoublets - Atomic Masses of H, D, and the Neutron.
published in Physical Review Letters  71(13), p. 1998-2001 (1993)   (paper in pdf , 392 kB)
 
• Two Ions in a Penning Trap - Implications for Precision Mass- Spectroscopy.
published in Physical Review A  45(5), p. 3049-3059 (1992)   (paper in pdf , 1004 kB)
 
• Classical Amplitude Squeezing for Precision-Measurements.
published in Physical Review Letters  68(19), p. 2859-2862 (1992)   (paper in pdf , 296 kB)
 
• Mode coupling in a Penning trap: pi pulses and a classical avoided crossing
published in Physical Review A  41(1), p.312-315 (1990)   (paper in pdf , 296 kB)
 
• Single-Ion Cyclotron-Resonance Measurement of M(CO⁺)/M(N₂⁺ ) - Reply.
published in Physical Review Letters  64(17), p. 2099-2099 (1990)   (paper in pdf , 100 kB)
 
• Single-Ion Cyclotron-Resonance Measurement of M(CO⁺)/M(N₂⁺ )
published in Physical Review Letters  63(16), p. 1674-1677 (1989)   (paper in pdf , 316 kB)
 
• rf Squid Detector for Single-Ion Trapping Experiments.
published in Journal of Applied Physics  63(9), p. 4599-4604 (1998)   (link to abstract )

Other publications

• Series solution for the image charge fields in arbitrary cylindrically symmetric Penning trap
  (J. V. Porto)
  published in Physical Review A  64, p. 023403 (2001)  (paper in pdf , 92 kB)


• Mass Spectrometry at 100 parts per trillion
Les Houches Summer School - Trapped Particles and Fundamental Physics, Les Houches, France, June 2000    (paper in pdf , 504 kB)
 
• Single Ion Mass Spectrometry and the Fine Structure Constant
AIP Conference Proceedings 2001, 551, (Atomic Physics 17), p. 73-85   (paper in pdf , 632 kB)
(International Conference in Atomic Physics (ICAP), Florence, Italy, June 2000)
 
• Precise measurement of the mass of Cs: Toward a new determination of the Fine Structure Constant
Proceedings of the International Conference on Trapped Particles and Fundamental Physics (TCPFP), Monterey, CA, September 1998   (paper in pdf , 272 kB)